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 simulation shows how a transistor can be used as a switch turning on and off in the LED. The...
This amplifier was found in a Japanese publication in 1972. Transistors are Japanese types of the...
This circuit was obtained from a Hands-On Electronics, an American magazine from January 1987. The...