Found on a 1969 EDN this circuit switches a current from a digital control signal. The impedance of the circuit ON is approximately 10 ohms. Modern equivalent transistors may be used.
This circuit was obtained in the publication 101 Electronics Projects of 1979. The circuit can be...
This circuit was obtained from an English magazine from 1979, but it can be easily assembled today...
Found in American documentation from the 90s, this circuit makes use of common components. The load must...