This circuit detects when a signal reaches its peak value. The source must be symmetrical and equivalent operational amplifiers can be used. This circuit was found in an old European publication.
This small transmitter has an RF amplifier stage with coupling made from the central socket of the...
Found in a 1965 Motorola documentation this circuit drives magnetic-type fuel pumps found in cars...
This circuit simulates a multi-position switch using programming buttons. The circuit is from an...