The circuit precharges acapacitor with a slow and controllabledV/dt to avoid a large inrush currentduring power-up. You can also use thecircuit to create a high dV/dt for susceptibilitytesting on ...

Pressing the stop button drops out the SI coil, stopping the motor. Indicator lamps — red for running, green for stopped — can also be used. This basic control circuit forms the basis for much more ...

Remote Control and Signaling Circuits, Class 2 Using Class 2 circuits may eliminate shock or fire hazards, but only if you install them correctly.

The basic control circuit was simple, but too simple for safety — a projectile stuck in the barrel could leave a coil energized indefinitely, leading to damage.