This circuit makes use of a special LM195 power transistor not very easy to obtain. The circuit is from the 1994 Linear Applications Handbook by National Semiconductor.
This circuit can be used in AM and FM receivers to cut off the peaks of a signal functioning as a limiter...
When the sensor, an ordinary photo-transistor, receives light, the relay closes its contacts. The...
This circuit transforms your low sensitivity analog multimeter into an electronic voltmeter with...