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.
Found in a Popular Electronics from the 90s, this circuit can be applied to other operational...
This circuit eliminates transients that are 10% above the zener voltage. The transistor must be in...
This circuit was suggested by Sprague Electric in an 80's documentation. The circuit uses a...