This circuit uses three inverters to generate a rectangular signal whose frequency depends on R1 and C1. The circuit is from a March 1996 Electronics Now.
This circuit controls a relay in a bistable way by touching the sensors type NF (CH3) and NO...
The circuit shown in the figure has a more efficient action, with an attenuation of 12 dB per...
The circuit presented is a simple MW tuner that can be plugged into the input of any audio...