The purpose of this circuit is to extend the range of applications from a Darlington pair to DC. The circuit is from an American documentation from 1970.
This VHF transmitter was found in Radio Electronics magazine from June 1964. The transistor is an...
This two-transistor circuit is from a Radio Electronics magazine from April 1965. The transistors are...
This circuit was found in a 1967 documentation. The switch diode is a component of the time and is...