This gun-like sound effects circuit is based on the PLL4066. The circuit was found in the December 1989 issue of Radio Electronics magazine and already includes a small amplification stage.
This circuit drives symmetrical loads through a single transistor. The circuit is from a Radio...
The transistors of this circuit can be BC548 for NPN and BD136 for PNP with load up to 500 mA. The...
circuit is used to increase the sensivity of a relay. A 50 to 100 mA relay can be triggered with...