This circuit was obtained from the July 1970 issue of Radio Electronics magazine. Zeners are power types that can provide a good current to the circuit. Selection is made by rotary switch.
This circuit produces a sequence of steps controlled by P1 and applied to a 12V stepper motor with...
Using a CA3030, this circuit was found in the May 1988 Radio Electronics magazine. The power...
This preamplifier circuit for turntable cartridges was found in the March 1994 issue of...