This circuit for multiple sound inputs was found in a Radio Electronics from January 1992. It consists of a Bargraph connected to a multi-input mixer.
This CMNOS crystal-based circuit generates a 2 Hz signal. It was found in the October 1994 issue of...
This circuit can be used in a power grid remote control project with the coil according to the...
This 10 kHz filter is based on a 741 operational amplifier. The circuit is from Electronics Now...