Found in Maxim's documentation from the 90's, this circuit uses an integrated from the time providing a 12 V output from 10 to 12 V inputs.
This circuit uses a switch to select the direction of rotation of a DC motor. It was found in the...
The transistors on this 1975 circuit can be BC548 and BC558. The circuit uses a symmetrical source...
We found this circuit in the October 1987 Radio Electronics magazine. The triac must be controlled...