This windshield wiper interval switch was found in the April 1990 issue of Radio Electronics magazine. The circuit uses integrated circuits that are still readily available.
November 2016 - The TL3780 ultra-miniature E-switch touch switches can now be obtained from Mouser...
This circuit can control the power from 0 to 70% of the maximum power on a load. The circuit was...
Found in a 1967 documentation, this infrared amplifier is intended for use in a Nipkow disc camera...