From: Kent A. R. <kn...@er...> - 2011-09-07 18:47:24
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On 9/7/2011 5:34 AM, andy pugh wrote: > <blah blah> > It is interesting watching this conversation develop, as Pete and Dave > are both of the opinion that what I have is entirely conventional for > a servo drive. I have also just noticed that the transformer I rescued > from the skip at work (A 1160VA Siemens one) might work, if I can find > a combination of winding taps that gives 1:1. Thanks for the offer, > though. Andy: I'm surprised this list is so tame since we obviously lean toward DIY approaches. Other lists I lurk on would have you either crafting an isolation transformer from found materials (I guess they'd settle for you rewinding that Siemens; start by getting out a nice big chisel) or wiring two "pole pigs" back-to-back (in this country at least, the transformers used by power companies to step down from their area-distribution voltage level to a home/business voltage level commonly hang on the power company's pole; hence the slang name). One list would have you design and build your own Tesla wireless power distribution system as a way of isolating your servos from the mains. There's also the tried and true motor-generator approach. We've already discussed using emc for controlling such beasts. It shouldn't take long to whip one up out of stuff in the back of your shed and you could tie in both an electric motor and a fuel-based engine to avoid power outages :-) Regards, Kent |