Suggested by Motorola documentation from the 1980s, this circuit can be implemented with equivalent power MOSFETs. The type depends on the current of the controlled motor, as well as the diodes.
This circuit with TTL compatible output was found in a 1968 US documentation. The circuit is...
This useful benchtop power supply uses a single LM350 integrated circuit as a regulator. The...
We find this circuit in a Popular Electronics of the 80's. The frequency range depends on C1 and...