The idea of this circuit is that when the device in SO1 is turned on, the device connected to SO2 automatically receives power. The circuit is from Radio Electronics from January 1985.
The number of pulses produced by this circuit depends on the switch pressed. The circuit is from...
Found in older American documentation, this circuit can monitor 3 or more voltages determined by...
This 1990 circuit uses LEDs on a display with individual LEDs that form the hours and minutes. The circuit...