Using a 74123 TTL this circuit was found in the Radio Elecronics magazine of June 1975. The power supply must be 5 V. The capacitor determines the activation time.
This circuit operates with input voltages from 50 to 140 V providing an output of 12 V under...
This circuit provides a 5 V negative output with a maximum current of 1 A. The circuit is from the...
We found this range of LEDs with the UAA180 in the 1976 Siemens Integrated Circuits manual. The...