Found in an American documentation from the 90s, this circuit has a configuration that has been extensively explored in other articles on this site. The FET can be the MPF102 or equivalent.
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...