This circuit is from a Radio Electronics from April 1964. The circuit uses power transistors of the time, which must be mounted on a good heat radiator. Modern equivalents can be used.
June 2017 - The new TE Connectivity FSJMI series of illuminated tactiles switches is now available in Mouser...
The frequency of this oscillator depends on the capacitors and typical values for the resistors are 10...
This circuit of a Popular Electronics is intended to control a wiper. The circuit consists of a...