1972 Volume 1972 Issue 11 Pages 2200-2201
A device for temperature control of a liquid bath was presented, using a thermoregulator, an FET, a pulse generator, an SCR, and a heater.
In the device, the FET was used instead of a vacuum-tube, and a triggering signal was applied to turn the SCR on. In order to generate pulse, any of the following three methods was used; the astable multivibrator, the blocking-oscillator circuit and the relaxation-oscillator circuit.
The detail of the circuits was presented and the operation of them was described.
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