It is available in five models.
a) Student Stimulators Transistorised : Output 0-25 DC in two steps, duration .5 or 1.5ms frequency 5 to 100 c/s in 11 steps, modes, single, repetitive or an external trigger, for 220V 50 Hz.
b) Student Electronic Stimulator Latest Design :
(i) Frequency continuously variable from 0.1Hz to 100Hz. In 3 decades of 0.1 to 1, 1 to 10 and 10 to 100 selectable through push-button controls and one continuously variable control.
(ii) Output Voltage continuously variable from 0 to 30V in two steps of 1 to 3 and 1 to 30, selectable through a switch.
(iii) Fixed pulse duration 1m sec.
(iv) Single & external trig. single pulse facility.
(v) Sensitive speaker to give audible indication or each output.
(vi) High stability new circuitry minimises external interference.
c) Stimulator General Purpose : Provides rectangular pulse of controlled amplitude 0.1-100V. Frequency 0.1-1000 PPS & width 0.01 to 100m see. All solid state latest model.
d) Research Stimulator with R.F. Isolation Unit : Provides rectangular pulse of controlled polarity, Amplitude 1.5mV to 150V; Frequency 0.1 to 10 KCS. Delay 10 micro sec. to 1 sec. & width 10 micro sec. to 1 sec. As per Grass, All solid state.
e) Research Stimulator Model SS48 :
The solid state SS48 with the train duration parameters, offers an economical way of obtaining train of pulses from a single output without combining two Stimulators. The SS48 can also be used for routine nerve/muscle stimulation & or refractory measurements in the student or research laboratory.