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.
This circuit was found in old documentation, but as it uses the 555 it can still be easily...
The shunt type regulators are connected in parallel with the load, deflecting the current to...
This circuit is from a 2004 publication. The triac must have a heat sink as well as the SCR and...