Yes it does sound like a variable reactor setup. The control signal is DC and pushes the core into saturation, reducing it's inductance. The early BOSS Bridgeport CNC mills used this sort of setup to reduce the idle current on the stepper motors. It also used to be quite commonly used on TIG welders to control the output current. These days they do it with electronics instead.
Les On 21/11/10 21:00, Kirk Wallace wrote: > I have what appears to be a transformer with a reactor in series with > the secondary. The reactor is used to control the transformer output > current. I can imagine the reactor will act like a normal inductor and > impede the AC current, but the reactor has another coil on it. I assume > this coil is used for current control and works by pushing the core into > saturation. Is my assumption correct? Would the control signal would be > DC or some sort of phase controlled signal? > > Control > Signal? > Pri Sec | | > -------D " uuuu > D " ==== > D " C------nnnn----o > Mains D " C Output > D " C--------------o > -------D " > > (Just for fun -- I found this link while looking for reactor > information: > http://books.google.com/books?id=mtwDAAAAMBAJ&lpg=PP1&pg=PA162#v=onepage&q&f=false > Short URL http://alturl.com/owob4 ) > > ------------------------------------------------------------------------------ Beautiful is writing same markup. Internet Explorer 9 supports standards for HTML5, CSS3, SVG 1.1, ECMAScript5, and DOM L2 & L3. Spend less time writing and rewriting code and more time creating great experiences on the web. Be a part of the beta today http://p.sf.net/sfu/msIE9-sfdev2dev _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
