Recent products introduced by Elgar, Pacific Power, and others have an output range from DC to kHz, perform a multitude of EMC/safety measurements and test conditions, are no larger than 4U (some are smaller), and full featured for less than $8k(US). There are less expensive AC sources available (some < $3k), but they may not be instrument-grade. Tell your boss to open his wallet & let the moths free...
For simple production-line testing, that required some degree of automation, I've use motor-driven variacs. For even more simple (simplistic ?) requirements, I've used zero-sense crossing SSRs that switch taps in transformer windings. And, given a clear requirements specification, I am certain that the clever people of this listserv will think of solutions that are much more elegant. I speak only for myself. Brian -----Original Message----- From: Fred Townsend [mailto:f...@poasana.com] Sent: Friday, May 11, 2001 10:59 AM To: Brian O'Connell Cc: 'emc-p...@majordomo.ieee.org' Subject: Re: looking for used power supply > > > Please visit the web pages of Elgar, Pacific Power, Agilent, etc. The > requirement should be obvious. I am very familiar with this type equipment. If you are familiar with this type equipment you should also know that an Elgar covering this power range, variable from say 40 to 400 Hz costs upwards of $25K, takes 5 rack bays to house, and 6 weeks to order in. On the other hand if Mike is simply looking for something to make 50 Hz from 60 Hz then a simple motor gen set costing a few $K will do the job. Finally if Mike is really trying to hook up a single phase load to a 3 phase main, then all he needs is the right transformer. <$1K The operative word here is "variable" and in what context. It seemed obvious to me that Mike was not familiar with this subject and could have mis-specificed his requirements, i.e. did he say variable when he meant compatible? Fred Townsend ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson: pstc_ad...@garretson.org Dave Heald davehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.rcic.com/ click on "Virtual Conference Hall,"
