This circuit is from an American publication from 1974. The circuit can be designed with PNP BC558 transistors and if the power supply is inverted, with NPN transistors. The circuit originally uses germanium transistors.
This circuit is from an American publication from 1974. The circuit can be designed with PNP BC558 transistors and if the power supply is inverted, with NPN transistors. The circuit originally uses germanium transistors.