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.
This series and parallel sensor circuit was found in Popular Electronics from the 1990s. Any SCR...
This antenna tuning circuit was found in a Popular Electronics from the 90's. The coils depend on the...
Applications for this circuit include hearing aid, stethoscope, etc. Transistors are general...