We found this range of LEDs with the UAA180 in the 1976 Siemens Integrated Circuits manual. The maximum supply voltage is 18 V.
This source of constant current was obtained in an American documentation of 1973. The transistors can be...
Unlike white noise, pink noise has a spectrum whose amplitude decreases with frequency. This...
This circuit was found in a 1985 English magazine, but it can still be easily assembled, as the...