Understanding the overcurrent trilogy will help you protect your circuits. Circuit overcurrent protection encompasses overload, short-circuit, and ground-fault protection. NEC Art. 100 defines ...

In Part 1, we saw why we must separate overload protection from fault and short circuit protection for motor circuits. But correctly sizing these different devices can be confusing. And if you follow ...

The usual way of preventing a small motor from drawing too much current is to install overcurrent protection in the form of a circuit breaker or some other kind of limiter. But installations that ...

Worcester, Mass.—Allegro MicroSystems Inc. recently expanded its microstepping motor driver line to include four new devices that require fewer external components and use a simple STEP and Direction ...

Allegro MicroSytems developed two full-bridge DMOS PWM motor drivers last 2010, the A4952 and A4953. These motor drivers are intended for pulse width modulated (PWM) control of DC motors. They produce ...

For the PDF version of this article, click here. New industrial and appliance motor drives have become more advanced in performance and more compact in size. This is largely due to advancement in ...