This circuit is from an old American amateur radio manual. The circuit shows how to use a Varicap on a high power frequency doubler circuit.
The circuit shown here is a CCO. The frequency here depends on the current through the...
This circuit, using a unijunction transistor (UJT), converts a voltage applied to the input in a...
The ESDZ series of protection diodes from STMicroelectronics can be purchased from Mouser...