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 simulated circuit uses a 741 (Operational Amplifier), but other operational amplifiers can be...
Using the 555 and 4020, this timer was found in the July 1994 Radio Electronics magazine. The...
This circuit was found in American documentation from the 1980s. The integrated circuit used is a...