This circuit was found in the December 1976 issue of Radio Electronics magazine. The circuit includes a powerful pulsating siren. It is activated by courtesy light switches and other sensors.
This is a typical RF oscillator configuration found in a 1980s documentation. The frequency...
The purpose of this circuit is to detect output signals from a transmitter for the frequency range...
We found this circuit in a Japanese 1968’s documentation. The circuit makes use of transistors from...