The circuit in this Idea for Design provides three levels of speed control for a dc motor using a PC’s parallel port (LPT1). A C++ program performs the control functions by allowing the signals ...

Coil hold-in devices were created specifically to solve the voltage sag problem with control relays and contactor/motor starters. There are two designs of low-cost coil hold-in devices available. Both ...

Sponsored by Texas Instruments: With the driver ICs available today, brushed DC motor control is a snap to integrate in building-, home-, and industrial-automation applications ...