This circuit was found in the August 1997 Electronics Now magazine. The circuit uses well-known operational codes and generates signals up to 20 kHz.
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...