This decorative circuit was found in the July 1994 issue of Electronics Now magazine. It makes LEDs blink in a face-shaped allegory. The frequencies are given by the capacitors in the oscillators.
The circuit shown in figure 6 provides a TTL logic signal at its output, when the LM3911...
This circuit uses one of the most traditional of the voltage regulating circuits, the 723. This...
This circuit of various uses on the bench was found in Radio Electronics magazine from January 1960....