We found this circuit in a 1978 documentation. The SCR conducts when the regulator's output voltage exceeds the zener voltage.
We found this circuit in a Radio Electronics from May 1959. The circuit uses a power relay and a...
The purpose of this circuit is to warn when a door is opened or when left open, feeding a buzzer of...
Featuring an 8 MHz passband, Texas Instruments TVS912A operational amplifiers can be found at...