This circuit was found in Motorola's 1968 documentation. It can be built on current equivalent components. The bridge diodes and the SCR must be in accordance with the current of the controlled motor.
This control circuit up to 1 kW was found in a 1967 RCA documentation. The components are from...
This circuit was found in 1967 General Electric documentation. The transistors of the time can be...
This circuit produces signals in the range of 200 Hz to 2 kHz. We found it in the magazine...