We found this circuit in a 1968 Electronics World. The transistors are from the era and information about the transformer was included. Transistors support current equivalents.
This setting appears elsewhere in this section. This was obtained from an American 1980s...
This speed control for small DC motors can operate from 6 to 12 V sources. The motors can drain...
We found this circuit in a 1964 Electronic Design. Transistors can be modern general-purpose...