This digital circuit is from a Radio Electronics magazine from December 1991. It does not use a microcontroller, but rather discrete digital circuits of the time.
This powerful 50-joule xenon flasher was found in Ferranti's 1965 documentation. The circuit makes use...
This circuit trips when the input voltage exceeds 30 V. Its base is a DIAC and it can be used to...
This continuity test was found in a 90s Popular Electronics. The circuit applies a voltage of 300 mV to...