The circuit is from a Radio Electronics magazine from October 1987. The Triac must be equipped with a heatsink and the transistors are general purpose.
In a reflex receiver, the detected audio signal is applied back to the circuit input to receive new...
This circuit was found in the February 1991 Radio Electronics magazine. The circuit must be...
This circuit was obtained in an Electronic Design from the 80's. It has the adjustment of the gain...