This latching light alarm was found in the 1995 Encyclopedia of Electronic Circuits Volume 5. The circuit is powered with 12 V to provide a signal to a power stage.
We found this circuit in the June 1991 issue of Radio Electronics magazine. The integrated circuit is...
This polarity test or indicator indicates the polarity of a power line by LEDs. The circuit is...
This circuit is from Motorola's 1990 Linear Databook. The transistors allow equivalents and the...