They can. This is often used with AC motors and they're chopped at 100kHz or so. On 07/03/2015 05:14 AM, Dan Sheehan via Stagecraft wrote: > > These DC dimmers run at high chopping frequency to avoid heating ? > -- Jerry Durand, Durand Interstellar, Inc. www.interstellar.com tel: +1 408 356-3886, USA toll free: 1 866 356-3886 Skype: jerrydurand