This power source was found in a Motorola manual from 1968. Transistors are from the era, and current equivalents can be used.
A ring and pendulum of stripped wires form the sensor for this alarm. Once triggered, to reset, you...
We found this circuit, which should only be used with incandescent lamps. In the Motorola Linear...
The circuit shown can be connected in parallel with the speaker of a sound system. Its purpose is to...