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Demonstration Models


Multi Vibrators


Oscillators


Frequency Response Instruments

 
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A.F. Oscillator (Bridge Experiments) (PSAW -95)

A fix frequency Oscillator for Bridge Experiments, workable on 220 Volts 50 Hz, Giving variable output 0 to 10 volts P-P at 1000 Hz. Accuracy ±2% Output impedance 600 Ohms.

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A.F. Oscillator (Function Generator) (PSAW-93)

Generates frequency from 1 Hz to 250 KHz in 5 steps wave form is sine square and Triangular. Output is variable from 0 to 10 Volts Accuracy ± 3% or 2 Hz. Output Impedance 50 ohms. Solid State. Workable on 220 v 50 Hz complete I.C. version with coarse and fine controls for output and frequency select. Dimension 11"x5 1/2 x 5"

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A.F. Oscillator (Digital) (PSAW-93-B)

same as above, with digital read out. specification ; wave form sin\sq \ triangular frequency Range:1Hz to 250 k Hz in five selectable bands. Amplitude: 1to10 V P-P for continuous variation in three coarse steps and a fine control. Output impedance-50 ohm Read out- Digital Dimension: 13"x6"x5"

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A.F. Oscillator (PSAW-91 (Functi)

Frequency Meter Variable from 1 Hz to 1 MHz in five decade ranges Accuracy ±2% or 1 Hz. Six steps output 1 mV to 20V open circuit, continuously variable. Frequency response ±0.3 db from 20 Hz to 20 KHz. Setting at KHz, 0-5 dB, 10 Hz to100 KHz. Output Impedance 600 Ohms. The instrument is solid state and workable on 220 Volts 50 Hz. Sine, Square waves, Read out Digital. Frequency meter can be used to read 10 Hz to 10 MHz and seperate terminals in provided for that. Dimension : 13"x6"x5"

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R.F. Oscillator ( PSAW-92)

Variable 100 KHz to 30 MHz. The instrument is to deliver modulated output and continuous wave form. The frequency range is covered in eight bands , modulation frequency is 400 Hz, and also available on output terminals. M Modulation depth 30% Accuracy ±2%

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R.F. Oscillator ( PSAW-92)

General use of instruments is in ultra sound and letcher wire experiments. Generate frequency 3 MHz with high output volts. The frequency is calibrated on dial.

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R.F. Oscillator (AM/FM) ( PSAW-92C)

Union instrument for testing Radio and T.V. Set variable from 200 KHz to 280 MHz in seven band output modulated at 400 Hz and 1 KHz with calibrated dial. F.M. modulating automatically switched above 50 MHz, output variable 0 to 200 m.V

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Crystal Marker Generator ( PSAW -120)

Instruments is standard frequency generator, workable 220V 50 Hz, crystal used is of fundamental frequency of 1 MHz, Frequency output level is T.T.L. compatible. Four decade dividing circuit is used to make it variable 1 Hz to 1 MHz. Digital indicator 4 digit.

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T.V. Pattern Generator (Black and White) (PSAW-121)

The Instrument generate seven type of pattern and sound of 1 KHz. It is ideal for T.V. Testing and alignment of sync circuit and quick testing of R.F. I.F. Video and sound circuits. The equipment work on all 12 channel of T.V. It is generates pin point frequency for the desired channel. The design is as per C.C.I.R. standard. Workable on 220 V 50 Hz (The Pattern generated are cross, horizontal, vertical, dot, side cross and blank).

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R.F. Oscillator (AM/FM) ( PSAW-92C)

Union instrument for testing Radio and T.V. Set variable from 200 KHz to 280 MHz in seven band output modulated at 400 Hz and 1 KHz with calibrated dial. F.M. modulating automatically switched above 50 MHz, output variable 0 to 200 m.V

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Crystal Marker Generator (PSAW -120)

Instruments is standard frequency generator, workable 220V 50 Hz, crystal used is of fundamental frequency of 1 MHz, Frequency output level is T.T.L. compatible. Four decade dividing circuit is used to make it variable 1 Hz to 1 MHz. Digital indicator 4 digit

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T.V. Pattern Generator (Black and White) ( PSAW-121)

The Instrument generate seven type of pattern and sound of 1 KHz. It is ideal for T.V. Testing and alignment of sync circuit and quick testing of R.F. I.F. Video and sound circuits. The equipment work on all 12 channel of T.V. It is generates pin point frequency for the desired channel. The design is as per C.C.I.R. standard. Workable on 220 V 50 Hz (The Pattern generated are cross, horizontal, vertical, dot, side cross and blank).

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T.V. Pattern Generator (PSAW-121 (Black)

The instrument find application for checking coloured T.V. Line frame, time bass, linearity, picture, dimensions, video, I.F. sound and functional performance of Audio/Video Stages. It give four coloured and three black and white patterns. Specifications : Line frequency-15625 Hz Fixed

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Pulse Generator (PSAW-123)

The instrument produces rectangular pulses. The pulse rate and the pulse width is variable. The pulse amplitude can be selected to trigger T.T.L. Circuit. Specification :-

Pulse Time

: 10 Micro sec. to 1 sec. variable

External Triggering

: 2-20 Volts.

Pulse Width

: 1 Micro sec. to 1 sec.

Output Voltage

: 1 Volt to 15 Volts

Rise Time

: 10 sec. in 50 ohms load.



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Conductivity Bridge (PSAW-94)

This instrument is to measure Conductance of Electrolyte solution or its Resistance directly. Working frequencies are 50 Hz and 1 KHz. Direct calibration in MHO. Resistance 0.1 Ohms to 1 Meg ohms. Conductance 1 MHO to 1 Micro MHz in seven ranges, Accuracy ±1% mid scale and ±3% on both ends. Null detection on meter with Conductivity Cell.

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L.C.R. Bridge (PSAW-98)

Fully Solid state instrument, workable on 220 V 50 Hz or on 9 Volts Battery, useful for the wide range measurement of Resistance, Capacitance and Inductance. Resistance Range : 0.01 Ohms to 1 Meg Ohms in seven ranges. Capacitance 2 PF to 110 MFD. Inductance 2 micro Henries to 110 Henry in seven ranges Accuracy ±1%, D-0.001 to 10Q=1 to 10. Dimension 14"x9"x5½"

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Dual Trace Oscilloscope ( PSAW-96A)

It is a 20 MHz Dual Channel Oscilloscope that s ideal for, professionals as well as students undergoing technical studies. It is a rugged, light weight instrument that features a brijght, sharply defined trace on a 80 by 100 mm cathode ray tube. The internal trigger signal is ac coupled. An external triggering signal or an external Z-axis modulation signal can be applied via a front panel or rear panel connector and the source selector switch. The horizontal system provides calibration sweep speeds from 0.2s to 0.1 Micro S per division. For greater measurement accuracy a x5 magnifier circuit extends the maximum sweep speed to 20 ns per division. Special Features : Synchronisation of the signals from the two channels can be identified by a Red LED, marked as "READY", present on the right hand side top on the front panel.

Frequency Bandwidth

DC - 20 MHz

Deflection Factor

5mV/div-10V x div x 5

Sweep Factor

0.2s-0.1s/div. ±5%

Trigger Synchronization

Int, Alt, Line, Ext. TV.

Vertical type

CH1, CH2, Alt, Chop

Sweep Mode

Auto, Trigger, Single time


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Oscilloscope (PSAW-96)

Fully Solid state workable on 220 volts 50 Hz. All supplies are stabilized for accurate and stable operation. Single beam with a band width DC to 10 MHz. The accurate triggering of time base enable clear and stable display on screen 8x8 cm. Vertical deflection can be selected for either A.C. or D.C. provision or attenuation in the input circuit, calibrated from 5 mV to 50V/cm.

Specifications :

Band width 

Vertical D.C. to 10 MHz (3db)

Sensitivity

10mV/Cm Maximum

Input Impedance

1 M Ohm.

Square wave calibration

2 VP-P.

Triggering

Internal from vertical amplifier or external.

Sweep Time Factor

0.1 us/Div. 0.1s/div. ±5%.

Horizontal Amplifier :

Band width

DC to 1 MHz.

Display

8x8 cm square

Power requirement

25 Watt 230 V 50 Hz.

Dimension

8"x5½"x11"


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Oscilloscope (PSAW -97)

This instrument is for college laboratory workable on 220 Volts. A.C. Vertical bandwidth 10 HZ to 2 MHz. Cathode Ray tube dimensions 8 cm. Sensitivity vertical 30 mV/Cm. Time base frequency 16 Hz to 50 KHz with Lock and Fine arrangement All controls for Focus, Intensity. X and Y shift are on rear panel. Built in arrangement for 50 Hz output for demonstration of lissageious figures

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Signal Tracer ( PSAW -99)

The instrument is used to locate faults in radio receiver. Workable on 220 Volt Hz. Probe 100 KHz to 30 MHz is provided to detect R.F. and I.F. Signal. The audible capability is upto 5 Watts. Complete with A.F./R.F. Probes and loudspeaker.

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Power Output Meter (PSAW -100)

The instrument is to measure power directly across on load. The calibration is on a analogue meter and variable load can be selected by an band switch. The variation of load is 4, 8, 16, 32, 250, 600, 5000 ohms, range is 0-10 watts in two steps. 0 to 1 and 1 to 10 watts F.S.D., workable on 220 Volts, 50 Hz.

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V.T.V.M. ( PSAW -63)

Workable on 220 V 50 Hz compiled in steel cabinet, rectangular meter 110x90mm.
Suitable for measurement of A.C. / D.C., Resistance 0-1000M. Ohms in seven ranges R.F. 0.50 Volts R.M.S. in 4 ranges.

D.C. Range

: 1.5, 5, 15, 150, 500, 1500 FS-D

A.C. Range

: 1.5, 5, 15, 50, 150, 500, 1500 F.S.D.

Resistance

: 1K, 10K, 100K, 1M, 10M, 100M, 1000M.


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Absorption Wave Meter (PSAW -132)

The instrument is to detect Radio frequency radiations. The wave length and strength can be known by tuning on L.C. Circuit. It consists of variable capacitor and two plugable inductors. Frequency covered is 1 MHz to 10 MHz

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Absorption Wave Meter ( PSAW -132 B)

Same as above with six coils 100 KHz to 100 MHz.

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Transistor Testor (PSAW -133)

Instrument is to test P.N.P. and N.P.N. transistors general purpose and low power. The indicator comprises an moving coil meter calibrated in gain or hfe. Socket provided for connecting transistor. Workable 220 V 50 Hz.

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Clamp ON Meter (PSAW -107F)

Instrument is to measure alternating voltage and current without connecting the same, measurement is by induction effect in coil.
Measuring Range :

0 - 500 V A.C.

0 - 500 Amps. A.C.

D.C. and Resistance measure by leads.


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Distortion Factor Meter (PSAW -202)

Instrument is measure unwanted distorted signal in an amplifier, by feeding pure sine wave and amplified signal passing through filters and distorted signal measured on meter in terms of percentage. The instrument consists of sine wave generator filter circuit and meter. Workable 220 V 50 H. The capability of this instrument is to measure distortion in audioable range 20 Hz to 20 KHz.

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Clamp ON Meter (PSAW -107F)

Instrument is to measure alternating voltage and current without connecting the same, measurement is by induction effect in coil. Measuring Range : 0 - 500 V A.C. 0 - 500 Amps. A.C. D.C. and Resistance measure by leads.

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Q Meter (PSAW -203)

The instrument is to measure ! (Quality factor) of an inductor. which is necessary to know when designing coils or transformer, measuring frequency is 1 KHZ or 10 KHZ. Measuring range is 0.1 to 100. Moving coil meter is used as indicator. Workable 220 V 50Hz. Balancing dial is directly calibrated in terms of Dimension : 14"x9"x5½"

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Clamp ON Meter ( PSAW -107F)

Instrument is to measure alternating voltage and current without connecting the same, measurement is by induction effect in coil. Measuring Range : 0 - 500 V A.C. 0 - 500 Amps. A.C. D.C. and Resistance measure by leads.

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Sound Level Meter

The instrument is to measure sound pressure in public palaces, workshop, machinery mills, vehicles. The sound is picked up and amplified attenuated and fed moving coil meter calibrated in decibles, measuring range: 50 to 110 db., Battery operated.

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Stroboscope

Instrument is to see the stroboscopic effect and determine the speed of moving articals without connecting it with revolving wheel shaft. Measuring range : 100 RPM to 10,000 RPM. with calibrated dial, Mains operated. Optional battery

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Handy Digital IC/Memory Tester

Digital IC Tester for testing TTL / CMOS / DRAM/ Most of the Digital circuits use 74 series TTL, 40/45 series CMOS & 41/44 series DRAM. It is essential to test the ICs before it is put into the circuit. This Tester is also useful for servicing/maintenance.
The IC Tester is having 24 Pin ZIF socket for testing the ICs. It has its own display of 16x1 LCD and own menu for guiding the user. It has the function of selecting the IC number, Auto Search for unknown ICs, and test the ICs. Its average search time is less than 0.8 sec.
FEATURES :
Can test 74 Series TTL.
Can test CD 40/45 Series CMOS.
Can test 41/44 Series DRAM.
24 Pin ZIF socket for testing ICs.

SPECIFICATIONS :

TTL Series

7400 to 741245

CMOS Series

4000 to 40257 & 4501 to 4585

DRAM Series

4164 to 414000 & 4464 to 441000

ZIF

24 Pin socket

Average search time

Less than 0.8 sec.

Dimension

16x11x45 cm

Weight

0.34 kg.

Display

16x1 LCD

Keyboard

5 Functional Keys

IC tester is operated on

9V DC, 250 mA or 1.5V x 4 Battery


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Digital Multimeter (Type PSAW -101)

Hand held 9 volts battery operated. Measurement range from 0.1 millivolts to 1000 volts for DCV in 5 ranges, 0.1 millivolts to 750V AC in 5 ranges, 0.01 ohms to 20 Meg ohms in 6 ranges. Diode testing facility. Audio buzzer for continuity 3.5 digit for display.

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Digital Milli Volt/Milli-Amp Source and Meters ; Type (PSAW 101-A)

(Thermo-Couple Calibrators) Provide continuously variable voltage and current outputs. The range of current output variable from 0-200 mA and the range of voltage output of 0-200 millivolts DC. Selection of current and voltage output available by means of a front panel control. Choice of measurement of output source voltage. Output source current of unknown external voltage possible by front panel control on 3.5 digit display. Source impedance of 2 ohms for voltage source. Input impedance of DVM more than 10 M ohms. Cabinet size of 75 mm (H) x 185 mm (W) x 220 mm (D).

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A.C. Milli Voltmeter Type (PSAW -102)

Measuring Range 1 MV to 20 V AC Selectable in range 199.9, 1999 mV, 19.99VDisplay 3.5 digit. Mains operated 220V 50 Hz.Frequency - 10Hz to 1MHz.

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Digital Frequency Meter Type (PSAW -103)

Display frequency on 6 digit display, Range of measurement from 1 Hz to 50 MHz. Sensitivity of signal 20 mV r.m.s. from 10 Hz to 1 MHz, increasing to 50 mV r.m.s. as 1 MHz and 50 MHz. Input protection to 550 V (DC + peak AC). Resolution of 0.1 Hz to 10 Hz and 100 Hz for gatings period of 1 seconds, Accuracy better than ±001% 1 least count. Uses Oven controlled crystal from internal clock. Cabinet size of 55 mm (H) x 240 mm (W) x 220 mm (D).

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Digital Capacitance Meter Type (PSAW -104)

Useful for manufacturers and users of all kinds of condensers, co-axil and multicore cables transformers, motors and other components where measurement of capacitance is necessary. Display the value of capacitance directly on 4 digit display. Capacitance measurement range from 1 pF to 10,000 microfarads in 7 full scale range. Accuracy of measurement + 0.5% + 2 least counts. Display reading directly without any need of balancing. Over range indication and test leads compensation facilities available. Portable, light weight and compact size of 75 mm (H) x 185 mm (W) x 220 mm (D).

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Digital Conductivity Meter (PSAW -105)

The instrument is designed to read Conductance of Solution and has wide range of measurement .02 Micro MHo to 1 MHo and in 3.5 Digits read out Accuracy +0.5% or 1 Digit Display L.E.D. or L.C.D. Power Supply 220 Volt 50Hz.Dimension : 11"x7"x4½"

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Photo Electric Colorimeter (PSAW -106A)

The instrument is unique for analytical laboratory. Operate on 220 Volts 50 Hz. Light source is from highly established Power Supply with Sensitive Photo Voltic Cell and slow motion shutting diaphragm. Transmittance 0-100 and optical Density 0-2. Test Tube dia 12 mm, Eight coloured filters. Readout by analogue meter.

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Photo Electric Colorimeter (PSAW -106B)

Do with digital meter

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Digital Mains Frequency Meter (PSAW -107)

The instrument for precise sensing of Mains Frequency, has three Digit Display, Crystal Control reference, Panel mounting type cabinet. Power supply and all necesasary circuit is built on phenolic P.C. Boards. Accuracy + 0.05% OR 1 Digit.

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Digital Lux Meter ( PSAW -108)

L.C.D. display workable on 9 Volts Battery 3.5 Digit, precisely calibrated in terms of LUX Power, three ranges 0-200, 2000, 20,000 LUX.

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Digital pH/mV Meter (PSAW -110)

Useful for precise and stable pH/mV measurement and ionic activity with specific electrodes, useful for Chemical, Pharmaceutical, Pesticide, Medical, Soil, Agriculture, Water and Laboratories, pH measurement 0 to 14pH corresponding mV measurement 0 to ±199.9 mV. Resolution ±0.01 pH, Accuracy ±1% Temperature Compensation of solution also provided. Complete with Electrode.Dimension : 11"x7"x4½"

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Digital Flux Meter (Gauss Meter) (PSAW -111)

Workable on 220 Volt 50 Hz. Measuring range upto 2K/20K gausses. Direct reading calibrated in terms of gausses, 3.5 digits display. Complete with Hall probe. Accuracy ±0.5%

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Digital L.C.R. METER (PSAW -112)

Capacity measurement 0-10,000 micro farad, Resistance upto 20M ohms and inductance upto 2,000 Henries, D & Q value is also direct readable. 4 Digit L.E.D. display. Bench type workable on 220V 50Hz.

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Digial L.C.R. Meter Hand Held (PSAW -112B)

Hand held L.C.D. display instrument with wide range of measurement. Inductor 1 mH to 100H, capacity 1 pF to 100 mF Resistance .1 ohms to 20 meg ohms.

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Digital Potentiometer (PSAW -110B)

A digital instrument with precise potentiometeric measurement of ionic solution. Measuring range 0-200 milli volt, with electrode and standard solution.Dimension : 11"x7"x4½"

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Digital R.P.M. Meter

Non contact type with digital readout workable on 9V Battery L.C.D. display. Complete with senser and working manual. Range 100 to 10,000 R.P.M.

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G.M. Counter Digital (PSAW -10D)

Instrument consists of power supply for G.M. Tube with digital read out meter. 6 Digit counting system with its power supply. Controls for reset, start and stop through on panel. One presetable timer with 3 digit display and thumb wheel switch. Complete with G.M. Tube, stand, and one radio active source B

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Photo Cell Mounted on Base

Valve version Photo Cell (VACUM TYPE) fitted in housing. Useful for PLANK'S CONSTANT APPARATUS

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Plank's Constant Apparatus

Activity : To determine stopping potential h in Photo Cell (Vacum Type) The apparatus consists of :

1.

A vacuum type photo cell mounted in housing, along with three coloured glass filters.

2.

Lamp house for monocrometic light

3.

Optical Bench Double Rod

4.

Low voltage D.C. source with moving coil meters

5.

Connections leads


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Photo Cell Characters

Object :- To draw V & I characteristics of Photo (gas Filled) Contents :-

1.  

100 V Power Supply with Voltmeter and microamparemeter.

2.  

Lamp Hose for illumination of light

3.  

Optical Bench Double Rod

4.  

Photo Voltic cell mounted.


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App. To determine Inverse Square Law in Photo Voltic Cell

Activity :- To draw characteristics between distance and intensity of light. The apparatus consists of :

1.

Photo Voltic Cell mounted

2.

Lamp House for illumination of light. 

3.

Optical Bench Double Rod

4.

Connection leads

5.

Power Supply with meters


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App. To draw Spectral, Azimuthal Angle & Stopping Potential of given Photo Voltic Cell

The apparatus consists of :

1.

Photo voltic cell mounted

2. 

Micrometer slit with mounting

3.

Light source with coloured glass fiters

4.

Optical Bench Double Rod

5.

Low voltage D.C. source for stopping potential 

6.

Connection leads.


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LDR Characteristics Apparatus (PSAW -G9)

To plot a graph, Current versus Intensity of Light at different value of voltages. Instrument comprises of DC Regulated Power Supply 0-3 VDC/100mA, two round meters for voltage & current measurement, LDR mounted on the panel, connections of Supplies & LDR brought on terminals with light source. Dimension 11"x8"x4".

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Photoelectric Relay Apparatus (PSAW -G10)

To study the operation LDR by relay. Instrument comprises one Relay, LDR mounted on front panel, Lamp holder with 10W Bulb mounted with power supply. The effect of relay is demonstrated by bulbs. Dimension 8"x6"x5".

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LED Characteristics Apparatus (PSAW -G11)

To study V-I Characteristics of a LED.Instrument consists of DC Regulated Power Supply 0-3 VDC/25mA, two round meters for voltage & current measurement, LED mounted on the panel, connections of Supplies & LED brought on terminals. Dimension 10"x8"x4

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Characteristics of Opto Electronic Devices (PSAW -G12)

To study VI Characteristics of Photo Transistor, Photo Diode & LED. Instrument consists of DC Regulated Power Supply 0-3 VDC/150mA, two round meters for voltage & current measurement, Photo Transistor, Photo Diode & LED mounted on the panel, connections of Supplies, Meters & Components brought on terminals with light source. Dimension 15"x8"x4".

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Photodiode Characteristics Apparatus (PSAW -G3)

To plot a current versus Intensity of light at different value of voltages. Instrument consists of DC Regulated Power Supply 0-10 VDC/50mA, two round meters for voltage & current measurement, Photo diode mounted on the panel, connections of supplies & photodiode brought out at terminals with light source. Dimension 15"x8"x4".

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Photo Transistor Characteristics Apparatus (PSAW -G4A)

To plot a graph, current versus Intensity of light at different value of voltages. Instrument comprises of DC Power Supply 0-10VDC/50mA, two meters for voltage & current measurement, Photo Transistor mounted on the panel, connections of supplies & photo transistor brought on terminals with light source. Dimension 15"x8"x4".

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Mercury Vapour Lamp (Hg) for use with above Photo Voltaic Cell

A Mercury (Hg) Vapour Lamp 80 Watt with choke is fitted inside wooden box and wooden box is provided with slit, useful for above apparatus

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Solar Cell Mounted

Solar cell mounted.

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Solar Cell Characteristics Apparatus

Activity : To draw V & I characteristics of a solar cell. The apparatus consists of :

1.

Moving coil meters fitted on panel with power supply

2.

Lamp house with power supply

3.

Solar cell mounted

4.

Optical Bench Double Rod

5.

Connection leads


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Plank's Constant Apparatus using Solar CellActivity : To determine the Stopping Potential by using solar cell.

The apparatus consists of :

1.

Low voltage D.C. power supply with voltmeter and micro ampere meter

2.

Lamp house for illumination of light

3.

Solar cell mounted

4.

Optical Bench Double Rod

5.

Connection leads

6.

Set of coloured filters


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e/m By Thomson (Bar Magnet Method)

Activity : To measure e/m of Electron by Thomson Method Bar Magnet method. One method of demonstration modern physics in the controlled bending of stream of high speed electrons in a magnetic field. The actual measurement by students of the ratio of the charge on the electron to its equally minute mass imparts a stimulating sense of achievement. e/m apparatus has been perfected to the point where it is possible for this fundamentally important measurement to be carried out with good accuracy. Power Supply : E.H.T. 800V D.C. for cathode Voltage to C.R. tube. 0-100 volts D.C. with moving coil meters to measure the Deflecting voltage either y1 or y2 Plates. Cathode Ray tube fitted on wooden frame with scale divided in centimeters. Deflecting Magnetometer with permanent magnetic compass included. Compass stand, a pair of Bar Magnet.

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Millikan's Oil Drop Apparatus

The noted oil drop experment by which Prof. Robert A. Millikan measured the charge on the electron can be repeated by the student with this equipment. The latest improved design is based upon the experience and recommendation of teachers. Principal elements of the assembly are specially designed condenser, a light source and a measuring microscope. The All are mounted on a common support. Consisting of a heavy cast iron base which is mounted on a steel pillar that carries the microscope and the lamp house. The microscope can be adjustedsmoothly by slow motion screws in the horizontal as well as in the vertical direction. Atomizer is also fitted on the same carriage. The apparatus does not need any critical adjustment and the oil drops appear in microscope within seconds. Microscope is provided with micro meter scale.

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Power Supply for Millikan's Oil Drop App.

Specially designed for use with Millikan's Oil Drop Apparatus. It give IC regulated D.C. output 0.300 volt continuously variable to be applied to condenser plates and a 6 volt at 3A A.C. supply for the lamp house.

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Photo Multiplier Tube 931 with Housing


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e/m by Helical Method (Solenoid Method)

Having three major parts to measure electron for e/m by Helical Method, i.e.

1.

Standard Solenoid of multi-turned layers fitted on wooden base.

2.

Power supply, for cathode voltage to CRT. Provided with high resistance voltmeter, Also having solenoid supply with coarse and fine control arrangement, an ampare meter is used to measure current passing in solenoid.

3.

Cathode Ray Tube mounted to moveable inner side of the standard solenoid.


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Millikan's Oil Drop Apparatus

The noted oil drop experment by which Prof. Robert A. Millikan measured the charge on the electron can be repeated by the student with this equipment. The latest improved design is based upon the experience and recommendation of teachers. Principal elements of the assembly are specially designed condenser, a light source and a measuring microscope. The All are mounted on a common support. Consisting of a heavy cast iron base which is mounted on a steel pillar that carries the microscope and the lamp house. The microscope can be adjustedsmoothly by slow motion screws in the horizontal as well as in the vertical direction. Atomizer is also fitted on the same carriage. The apparatus does not need any critical adjustment and the oil drops appear in microscope within seconds. Microscope is provided with micro meter scale.

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Power Supply for Millikan's Oil Drop App.

Specially designed for use with Millikan's Oil Drop Apparatus. It give IC regulated D.C. output 0.300 volt continuously variable to be applied to condenser plates and a 6 volt at 3A A.C. supply for the lamp house.

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e/m by Short Solenoid Method (Megnetron Method) ( PSAW -O6)

To study charge of an electron by short solenoid method. Kit consists of Low voltage DC Power Supply with filament voltage, variable High voltage and Solenoid current source. Two meters are provided for Anode Voltage and solenoid current. One Solenoid mounted so that Magnetron can slide in solenoid pipe. Dimension 13"x7"x7". (Power Supply)

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e/m by Magnetic Focusing Method TE-O5a

To study charge of an electron by using Magnetic Focusing method. Kit comprises of High voltage Power Supply with intensity, focus X, Y deflection & Solenoid current controls. Two meters provided for acceleration voltage & for solenoid current controls. One 3" CRT mounted on Teak Wood Stand & a Ring Type Solenoid slides over the CRT. Dimension 11"x7"x4".

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8085 Microprocessor Training Kit

Kit is based on 8085 Microprocessor and is designed to provide ease in interaction with 8 bit Microprocessor capabilities. This Kit can be used to train engineers about the Microprocessor Technology, to control any Industrial process and to develop Software for 8085 system. This Kit has a powerful monitor in 4/8 bytes EPROM. The monitor can be extended to incorporate an Assembler and Dissembler for 8085. The Input/Output structure includes programmable 241/O lines. It has got 16 bit programmable Timber/Counter using 8253 for generation of any type of counting. Different types of INTERFACING MODULES from us can be hooked with this kit to perform simple experiments & projects in the lab. These modules are very helpful in learning about the real time inter acing problems of microprocessor.

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Diode Valve Characteristics Apparatus (Power Supply Model ) ( PSAW -1)

VI Characteristics of Diode Valve. Instrument consists of DC Regulated Power Supply 0-300VDC/30ma, 6.3V AC/1Amp, two meter for voltage & current measurement, valve diagram Printed, connections of Supplies & Valve brought on terminals. Dimension : 10"x8"x4"

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Same set above, for work function of Diode with circuit diagram and three meters.


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Triode Valve Characteristics Apparatus with Stabilized Power Supply (PSAW -3)

VI Characteristics of Triode Valve various Grid voltages. Instrument comprises of DC Regulated Power Supply (PSAW -3) 0-300VDC/30mA & 0-25 VDA AC 6.3 VAC /1Amp. three round meters for voltage & current measurement. Valve ECC82. Dimension : 11"x7½"x5½"

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Tetrode/Pentode Valve Characteristics Apparatus with Stabelised Power Supply (PSAW -5)

Plate & Screen Characteristics of Tetrode & Pentode Valve. Two Power supply variable 0-300V 50 mA & 25 VDC/25 mA, AC 6.3 VAC/1Amp, five round meters for voltage & current measurement, connections of Supplies & Valve brought on terminals. Valve 6SJ7 Dimension : 18x7½x5½

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Ionization Potential of Mercury (PSAW A-7)

To draw V-I Characteristcs of Thyratron valve and to drive Ionization Potential of DC Power Supply 0-3 VDC/50mA & AC 6.3V 0 to 25V 500mA, two meters for voltage & current measurement, valve diagram is Printed on Front panel, connections of Supplies & Valve brought terminals. Dimension 13"x8"x5".

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Thyratron Valve Characteristics Apparatus (PSAW A-8)

To draw VI Characteristics of Thyratron valve at various Grid Voltage Instrument comprises of Two DC Regulated Power Supplies 10V 300 uA and 0-25 VDC /250mA, valve diagram is Printed on Front panel, connections of Supplies & Valve brought on terminals. Dimension 11"x8"x4".

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V R Tube Characteristics ( PSAW A-4)


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'h' Parameters of PNP Transistor in Common Emitter Mode (PSAW B12)

Calculation of 'H' Parameters, such as current gain, input impedance, output impedance. Instrument consist of Two DC Regulated Power Supplies 0-10VDC, 500mA/50mA 0-1V DC at 30mA, Four meter, One PNP Transistor mounted, connections of Supplies, Meters & Transistor are on terminals and oscillator. Dimension 15"x18"4".

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Transistor Characteristics Apparatus (PSAW B18)

Input & Output Characteristics of Common Base PNP & NPN Transistors Input & Output Characteristics of Common Emitter PNP & NPN Transistors. Instrument consist of Two DC Regulated Power Supplies 0-10VDC/500 mA/ 50 mA & 0-1 VDC/30 mA, four round meters for voltage & current measurement, one PNP & one NPN Transistor mounted behind the panel, connections of Supplies & Transistors brought out on terminals. Dimension 15"x8"x4".

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SCR Characteristics Apparatus (PSAW -B20)

To plot Anode current Vs Anode Cathode Voltage Characteristics. Instrument consist of Two DC Regulated Power Supplies 0-3VDC/50mA & 0-150V DC, three meters for voltage & current measurement, SCR mounted on panel, connections of supplies. Meters & SCR brought on terminals. Dimension 15"x8"x4".

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FET Characteristics Apparatus (PSAW -B15)

To plot static & Transfer Characteristics. Instrument consist of Two DC Regulated Power Supplies 0-10V DC/ 10mA &0-5 VDC, three meters for voltage & current measurement, FET BFW10 mounted on the panel, connections of Supplies, Meters & FET brought on terminals. Dimension 11"x8"x4"

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Semiconductor Diode/PN Junction Diode Char. Apparatus (PSAW -B4)

To study Forward & Reverse Characteristics of PN Junction Diode.Instrument comprises of Two DC Power Supplies 0-50V 2mA, 0 to 1V 200 mA two meters for voltage & current measurement, PN Junction Diodes mounted connections of Supplies, Meters & Diodes brought on terminals. Dimension 10"x8"x4".

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Voltage Stabilization Characteristics of Zener Diode (PSAW -B4A)

To study Input Voltage, Output Voltage Char. & Output Voltage, Load Characteristics. Instrument consists of DC Power Supply, two round meters to measure input voltage & output voltage, one Zener Diode mounted on panel & connections brought out at terminals. Dimension 10"x8"x4".

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Zener Diode Characteristics Apparatus (Forward & Reverse V-I Characteristics). (PSAW -B3)

To study Forward & Reverse V-I Characteristics of Zener Diode. Instrument comprises of DC Regulated Power Supply 0-25 VDC 15mA, two meters for voltage & current measurement, Zener Diodes mounted on panel, connections on terminals. Dimension 10"x8"x4".

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PN Junction/Zener Diode Characteristics Apparatus (Forward & Reverse V-I Characteristics) (PSAW -B3A)

To study Forward & Reverse Characteristic of PN Junction Diode & Zener Diode. Instrument comprises of two DC Power Supplies, two meters double range to measure voltages & current, PN Junction Diode & Zener Diode mounted & connections brought on terminals. Dimension 15"x8"x4".

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Energy Band Gap of PN Junction Diode (PSAW -B1)

To plot reverse saturation current Vs Temperature in reverse biased PN junction Diode. Instrument consists of DC Regulated Power Supply 0-IV DC/500 mA, two round meters for voltage & current measurement, one PN Junction Diode is in Oven, 100ºC thermometer provided with temperature control system. Dimension 10"x8"x5".

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Thermistor Characteristics Apparatus (PSAW -B6)

To plot -ve Resistance co-efficient Characteristics of a Thermistor. Instrument comprises of DC Regulated Power Supply 0-IV-DC/1 mA, two meters for voltage & current measurement, one Thermistor and a Oven. Connections of Supplies, Meters & Thermistor brought on terminals provided with thermometer. Dimension 10"x8"x5".

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UJT Characteristics Apparatus (PSAW -B19)

To plot V-I Characteristics & to measure interbase resistance. Instrument comprises of Two DC Regulated Power Supplies 0-10V, DC/30 mA & 0-IV, three round meters for voltage & current measurement, one UJT 2N2646 mounted on panel, connections of Supplies, Meters & UJT brought on terminals. Dimension 15"x8"x4".

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Resistivity of Semiconductors by Four Probe Method at Differnt Temperatures and Determination of Band-Gap

The experiment consists of the following :

(i)

Four Probe Arrangement

(ii)

Oven (upto 200ºC)

(iii)

Sample : Ge Crystal mounted

(iv)

Thermometer (0-200ºC)

(v)

Four Probe Setup


(a)

Constant Current power supply digital Accuracy : +0.25% of the reading +1 digit Load Regulation : 0.03% for no load to full load

(b)

Electronic Millivoltmeter 200 mV Accuracy : + 0.1% of reading = 1 digit Impedence : 1 Mohm

Display : 3½ digit, 7 segment LED (12.5mm) height with auto polarity and decimal indication.


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Susceptibility or Fe cl3 Solution :

To study susceptibility of Ferous Solution in strong magnetic field, complete apparatus consisting of electromagnet of 7.5 K.G. strength with its Power Supply 0-100V variable 4 Amps. Digital Gauss Meter 0-20 Kg with Hall Probe., Graduated Capillary tube with stand.

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Hall Effect Experiment

The set up consists of Electromagnet of 7-5 K.G., Power Supply for Electromagnet 0-100V, 4 Amps with meter, Germanium Crystal mounted and its constant current power supply 0-20mA fitted with two Digital Meters for Halls Voltage and Crystal Current. Gauss Meter Digital 0-20K.Gauss with Hall Probe

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Ultrasonic Diffraction Grating Experiment

To determine velocity of ultra sonic wave) Complete apparatus with R.F. Oscillator 3-8 Mhz, Crystal with tank, Specto meter of 9" bed, Sodium Lamp with Wooden Box and Transformer.

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Dielectric Constant Apparatus

To calculate dielectric constant of liquids and solids. The instrument consists of high frequency oscillator of tuneable with outer gang condenser optimum tunning is indicated on meter. The change after placing dielectric between parallel plates is again detected and difference noted for calculation.

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Mosfet Characteristics Apparatus ( PSAW -B15A)

To plot VDS VSID for different values of VGS. Instrument comprises of Two DC Power Supplies 0-10V, DC 10mA & 0-5V DC, three meters for voltage & current measurement, one Mosfet no. TRF 840 mounted on panel, connections of Supplies, Meters & Mosfet brought out terminals. Dimensions 11"x8"x4".

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Characteristics & Applications Thyristors ( PSAW -B20T)

To study Characteristics & Applications of Diac, Triac, UJT & SCR. Instrument comprises of Three DC Regulated Power Supplies 0-15 VDC/150mA, 0-50 VDC/100 mA & 0-2.5V DC/200 mA, four dual range meters for voltage & current measurement, UJT, SCR, Diac, Triac & their supportive components mounted on panel, connections of Supplies, Meters & componentsbrought on terminal. Dia mention 15"x8"x4".

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Diac Characteristics Apparatus ( PSAW -B20D)

To study VI Characteristics of Diac. Instruement comprises of DC Regulated Power Supply 0-50 VDC/100mA, two round meters for voltage & current measurement, one Diac mounted on panel, connections of Supplies & diac brought at terminals. Dimension 15"x8"x4".

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Triac Characteristics Apparatus ( PSAW -B20A)

To study the MT Characteristics with Gate Signal. Instrument comprises of Two DC Regulated Power Supplies 0-25VDC/100mA & 0-5 VDC/200 mA, three round meters for voltage & current measurement, Triac mounted on panel, connections of Supplies & Triac brought on terminals. Dimension 15"x8"x4".

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Wave length of light of Laser

To study different pattern of laser light and determine its wave length. Complete apparatus with Laser Source 5 Milli Watts with Power Supply opreatable 220V 50Hz, Optical Bench and Riders, Set of 13 experiment Kit, Laser fitted with beam expander. Single Slit, Coarse Grating, Multiple Slip, Single Taper Slit, Holes A, B, C, D, Gray Filter, Multiple slit, Circular Opaque spot, Mesh, Multiple Slit 5, Grid Pattern, Multiple Slit 2.

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Measurement of Peak, Average & RMS Value of a AC Signal ( PSAW -O21)

Instrument consists of Sine Wave generator, Step Down Transformer, Circuit Diagram for Peak & average Value measurement Printed and connections brought on terminals. Dimension 10"x8"x4".

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Resistances in Series & Parallel Apparatus ( PSAW -O19A)

To verify properties of Resistances when connected in series & parallel. Instrument comprises of Two moving coil meters to measure voltage & current, circuit diagram for series & parallel connections Printed, Resistance mounted along circuit. Dimension 10"x8"x3".

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Ohm's Law Apparatus ( PSAW -O23)

To verify Ohm's law i.e. V = IR Instrument consists of Two moving coil meters to measure voltage & current, One wire wound Potentiometer, Circuit diagram Printed Connections brought on terminals for connecting 6 Volts battery & One wire wound Resistance and power supply

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Charging & Discharging of condensor ( PSAW -O4)

To study RC time constant using various sets of Resistance & Capacitors. Instrument comprises of DC Power Supply with selector switch to select different voltages, One Microammeter, Circuit diagram is Printed, Terminals are provided for connecting different values of Reistance & Capacitors, with set of Resistor-Capacitors. Dimension 8"x6"x3".

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Flashing & Quenching of Neon Apparatus ( PSAW -O9)

To Calculate Charge & Discharge time of a Condensor. Instrument consists of High voltage DC Power Supply 100VDC/30 mA, 3 Capacitors (Paper Type) connected can be selected using toggle switches & One Neon lamp. Dimension 8"x6"x3".

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BH Curve Apparatus (with Different Meterial ) ( PSAW -O1)

To trace Hystersis curves. Instrument comprises of AC Power Supply 3-15 VAC, Output selectable using band switch, Circuit daigram for BH Curve Printed, Components connected panel, provision for connecting external Inductance, Input & Output Connections brought on terminal. C.R.O. 10 MHZ Type TE-97. Dimension 16"x8"x3".

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Convertion of Galvanometer Into a Voltmeter and Current Meter ( PSAW -O25)

Instrument comprises of DC Regulated Power Supply 0-10 VDC/500 mA, two round meters (One Voltmeter & One Galvanometer), Three set of Resistances mounted on panel, connections of Supplies, Meters & Resistances brought on terminals. Dimension 10"x8"x3".

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LCR Resonance Apparatus (Series & Parallel) (PSAW -O19)

To plot Frequency Vs Current Characteristics of LCR circuit, connection in series parallel. Instrument comprises of 1 Resistance, 1 Capacitors, & 1 Insductance connected & connections brought out at Terminals. 2 AC moving coil meters to measure voltage & current with Audio Frequency Function Generator TE-93. Dimension 10"x8"x3".

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LCR Impedance Circuit (PSAW -O19I)

To calculate AC power factor of LCR circuit when connected in series on AC voltage. Instrument comprises of AC Power Supply100 V, selectable using bandswitch, 2 AC moving coil meter to measure voltage & current, 1 Resistances, 1 Capacitors & 1 Inductance connected & connections brought out on terminals. Dimension 10"x8"x4".

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RC Circuit (Transient Response) ( PSAW -O26)

To study RC circuit as Low Pass & High Pass Filters. Circuit diagram for low Pass, High Pass Filter Printed, Three Resistances, Three capacitors are provided and connections brought out on terminals. OPT Audio Frequency Function Generator TE-93.

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Clipping & Clamping Circuit Apparatus ( PSAW -B9)

To study effect of Positive & Negative Clipping & Clamping on Sine Wave. Two fix Output DC Power Supplies connected in series of Diodes for Positive & Negative Clipping, Circuit diagram for Clipping & Clamping Printed, Components placed inside & connections brought at terminal. Dimension 8"x6"x4". OPT Audio Function Generator TE-93. C.R.O. PSAW -97.

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Half Wave/Full Wave & Bridge Rectifier Apparatus ( PSAW -B10)

To study Efficiency & Ripple factor in case of Half wave, Full wave & Bridge rectifier on load & study filters. Instrument comprises of AC Power Supply, 2 meters to measure Output Voltage & current, Junction Diodes, Filter Circuit kit, load Resistances selectable using toggle switches & all important connections on terminals. Dimension 10"x8"x4". Optional Digital AC Millivoltmeter.

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Verification of Network Theorems ( PSAW -N1)

To verify Superposition, Norton's Thevinin's & Maximum Power Transfer Theorems. Instrument comprises of 3 Fixed output DC Power Supplies of 12V & 5V at 100 mA current, 4 moving coil meters, Circuit diagram for all the 4 Theorems Printed on the front panel & connections of Supplies, Meters, Resistances & Potentiometers brought on Terminals

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Verification of Superposition Theorem ( PSAW E-N2)

Instrument consists of Two Fixed output DC Regulated Power Supplies of 12V & 5V at 500 mA current, Three moving coil meters, Circuit diagram Printed on the front panel & connections of Supplies, Meters & Resistances brought on terminals.

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Verification of Norton's Theorem ( PSAW -N3)

Instrument consists of One Fixed output DC Power Supply of 12V at 250 mA current, Two moving coil meters, Circuit diagram Printed on the front panel & connections of Supplies, Meters & Resistances brought out at 4mm Sockets.

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Verification of Thevinin's Theorem ( PSAW -N4)

Instrument comprises of One Fixed output DC Power Supply of 12V at 250 mA current, Two moving coil meters, Circuit diagram Printed on the front panel & connections of Supplies, Meters & Resistances brought out at 4mm Sockets.

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Verification of Norton's & Thevinin's Theorems. (PSAW -N5 )


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Verification of Reciprocity Theorem ( PSAW -N6)

Instrument comprises of One Fixed output DC Power Supply of 12V at 300 mA current, Two moving coil meters, Circuit diagram Printed on the fornt panel & connections of Supplies, Meters & Resistances brought on terminals.

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Verification of Maximum Power Transfer Theorem in DC Circuits (PSAW -N7)

Instrument comprises of One Fixed output DC Power Supply of 12V at 300 mA current, Two moving coil meters, Circuit diagram Printed on the front panel & connections of Supplies, Meters, Potentiometer & Resistances brought at terminals.

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