This circuit uses a transistor to trigger the alarm from a low quiescent current sensor. The relay is 12 V. The circuit is from Radio Electronics magazine, April 1975.
This power supply was obtained from an Electronic Design from the 90's. The circuit applies to...
This is a 6-bit counter, ideal for digital electronics classes or as a electronics teaching...
This circuit is from a 1980s Signetics documentation. The circuit separates the modulation signal from a...