This circuit makes use of a stroboscopic tube, a component that no longer exists today. The circuit is from the 70's and can be adapted to use mains voltage.
This circuit was found in the March 1994 issue of Electronics Now magazine. The circuit uses a...
Depending on the key pressed, this oscillator produces a different tone, set in the corresponding...
This very low current circuit was found in the April 1995 Electronics Now magazine. The frequency...