On Tue, Apr 30, 2013, at 02:14 PM, Stephen Dubovsky wrote: > SCR dc drives? Is this the 70's? > > LOL. Im kidding. But only partially:) > > SMD
For anything more than a few HP, SCRs still rule the DC drive world. I guess the toy stuff, under 1HP, is all PWM based these days. Small but not toys, say 1 to 5 HP, is probably a mix. But I bet there aren't many PWM DC drives above 5HP. My perspective is skewed somewhat, since the company I work for makes industrial DC drives, from about 20HP up. We don't mess with the tiny stuff. We recently shipped a 3000HP DC drive for use in a steel mill. -- John Kasunich jmkasun...@fastmail.fm ------------------------------------------------------------------------------ Introducing AppDynamics Lite, a free troubleshooting tool for Java/.NET Get 100% visibility into your production application - at no cost. Code-level diagnostics for performance bottlenecks with <2% overhead Download for free and get started troubleshooting in minutes. http://p.sf.net/sfu/appdyn_d2d_ap1 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
