Using transistors at the time, this circuit was found in a 1967 Ferranti documentation. The circuit is for 150-ohm transmission lines.
In this circuit found in a 1991 publication we can use the 2N2646 unijunction transistor and the...
Up to 0.5 A DC motors can be controlled by this circuit. Direction change is achieved by a logic...
This circuit was obtained in the publication 101 Electronics Projects of 1979. The circuit can be...