Found in American documentation from the 1990s, this circuit has active cycle control. The basic components are given along with the diagram. Transistors are general purpose.
This circuit was found in a Hands On Electronics with the suggested application an optical link for...
This circuit is from an Electronics World of 1967. The circuit slows down the activation of a...
This circuit was found in a 1980s documentation for amateur radio. The circuit makes use of...