This circuit is from an August 1984 Radio Electronics magazine. It monitors the state of a RAM backup battery. Resistor R1 determines the battery charge.
This circuit is from 1998 documentation. The circuit uses the TDA2002 in a bridged configuration and...
April 2017 - Mouser Electronics is making available this new component for open LED protection...
This tri-state comparator was found in a circuit manual from the 1980s, but it can be easily...