Using an integrated effects circuit, this circuit produces gunshot sound. The circuit must be powered by 5 V and the signal applied to a good audio amplifier.
A narrow range of frequencies around 1 kHz is rejected by the high Q filter shown in the figure,...
This simple converter does not use a transformer and the transistor can be the BD135 for currents up...
This is a circuit from the time when some still called the transistor a crystal triode. It...