The drives allow users with a large installed base to get better performance from their existing systems, and to continue using DC technology while better aligning with modern AC advancements. They ...

DC motors are used extensively in industrial variable speed applications because of most demanding speed-torque characteristics and are simple in controlling aspects. This paper presents a DC motor ...

These variable speed drives (VSDs) were developed to avoid the additional equipment and maintenance requirements associated ...

En route to getting the off-the-peg DC-51 motor speed controller to better suit my small milling machine, I had a go at working out what the circuit is. Approx circuit of DC-51 motor speed controller ...

The ZXBM1004 predriver IC offers variable-speed control for single-phase brushless dc fans and blowers. Compatible with NTC thermistor, voltage, and PWM input signals, the device offers thermal ...

The low-voltage variable speed drive (VSD) allows variable control instead of fixed-speed operation. These days, VSDs can ...

Figure 1. The chart shows energy savings achieved by Refrigeration Service Co. with use of a variable-speed controller. EDITOR’S NOTE: This material was prepared by Heatcraft Worldwide Refrigeration.

The SmartFan Inversion fan-speed controller combines an ac/dc power supply and a dc-fan control/alarm. The controller has a supply voltage from 95 to 264 Vac, and supports 24 or 48-Vdc fans rated to 4 ...