This old 4-channel circuit was found in the December 1994 Electronics Now magazine. The circuit uses a 556 as a modulator. Note the code programming key.
This oscillator with the PLL 4046B was obtained from a 90s Radio Electronics. The circuit...
This protection circuit trips by quickly blowing the fuse in the event of an overcurrent. The circuit is...
This circuit is intended for the testing of junction FETs, providing several reading options...