This circuit uses sunrise and sunset as a synchronization signal. The circuit is from Electronics Now magazine from May 1999. The cycle is one pulse per week.
Powering from a 36 V supply this circuit has a power output of 16 W in 4 ohm loads. With 40 V and...
Found in old American documentation, this circuit can use crystals between 27.5 and 33 MHz...
This circuit generates the sound of bells. We found it in a 1977 Radio Shack publication. The...