Using the 2N2646 this circuit was found in a Radio Electronics magazine from July 1968. The transistors are from the time and the lamp can be replaced by a high-power LED in a current version.
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...