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 crystal configuration can be made with triggers of any logic. The frequency is given by the...
This circuit was obtained from an 80s factory manual. The integrated circuits used are uncommon...
We found this circuit in an old American documentation. It is an electronic rheostat with a...