In the 110 V network, capacitors of 200 V or more and in the 220 V network, capacitors of 400 V or more, can be tested in this simple circuit. The indication is given by a neon lamp.
Originally created to power an 80's RTTY printer, this circuit can be used in other applications. The...
This circuit turns off a load after an interval of 8 to 80 seconds adjusted on the potentiometer. The...
Suggested by General Electric in a 1965 document, this circuit can accept a greater number of...