This long interval timer was found in the September 1976 issue of Radio Electronics magazine. The output can be used to control a relay. The circuit achieves timings of up to 14 hours.
This double-T sine wave oscillator uses a CA39035, an integrated circuit released by RCA at the...
The integrated circuit MC1408 / MC1508, consists of an 8-bit digital / analog converter from...
This circuit, which can act as a shield, was found in an American documentation from the 90s. The...