This circuit was found in the March 1982 Radio Electronics magazine. The component is a special circuit that generates programmed melodies selected by the switches.
This circuit appeared in the June 1990 issue of Radio Electronics magazine. Integrated circuits must...
Lockout shooting, due to the incidence of light, can be achieved with the circuit in the figure. In...
This circuit can function either as a crystal or galena receiver with a pre-amplifier using a FET...