This circuit activates a buzzer when the voltage applied to the input falls below a preset value in R1. The circuit is from an 80's American documentation.
We found this circuit in a 1998 documentation. It tests common household appliances to see if they...
We found this electronic organ circuit in a 1987 documentation. The circuit should be powered by...
This circuit was found in an Electronic Design from the 80's. It shows how to use a MOSFET driver with...