Testing of thermistors and SCRs (CB21391E)

This circuit was found in an old American manual. It is intended for testing SCRs and thermistors using indicator lamps.

Astable LED (CB12038E)
This astable multivibrator configuration causes two LEDs to alternately flash at a frequency...
Simple Touch Switch (CB15424E)
In the figure we show our first circuit that consists of a simple touch switch capable of driving a...
EMG Monitor (CB13793E)
This electromyography monitor is from a 1978 publication on operational amplifiers. The components are...