Varactor diodes are our varicaps of today. This circuit for switching signals in an RF circuit was found in a Radio Electronics magazine from July 1982.
This circuit is from an old publication, but it can be assembled with modern components. We can...
The purpose of this circuit found in a 1995 magazine is to monitor an alarm via telephone. When we...
Indicated for testing remote controls, this circuit was obtained from the June 1997 issue of...