This circuit is from a 1967 documentation. It makes use of varicap and diode tunnel in addition to currently uncommon FET. It serves as a reference.
This circuit was released in a Radio Electronics issue in November 1983. It is an accessory to be...
This Electronics Now circuit provides a signal when the voltage of a source drops below a...
The number of pulses produced by this circuit depends on the switch pressed. The circuit is from...