This circuit for old flashes with xenon lamps was found in a Radio Electronics magazine from June 1966. The sensor is a photoelectric cell from the time. Power is supplied by a 9 V battery.
This circuit turns on a lamp in the dusk and turn off in the down. Only incandescent lamps can be...
The Exclusive-NOR function can be achieved simply by adding one more NAND gate as an inverter to...
Found in a Popular Electronics from the 80's, this circuit makes use of a time integrated to...