We found this mains-powered switch circuit in Electronics Now magazine from July 1994. It could be used in a table lamp or touch control.
Found in a Hands On Electronics from the 80's, this circuit activates a relay with alternating...
This 1 A circuit was found in a Philips documentation from 1966. The transistor is of the time,...
We found this circuit in the Motorola Linear Databook of 1993. It is the traditional configuration with...