Maxon Precision Motor's ESCON 50/5 OEM module is a 4 quadrant Pulse Width Modulated (PWM) servo motor controller that can efficiently control permanent magnet brushed DC motors (PMDC motors) and ...

Intro To DC Motor Control Using The SN754410. ... This time he’s using a motor controller that has four half H-bridges built into it. ... using it for PWM speed control would give excessive ringing.