Alternatively take the output from the Variable Voltage Transformer (Variac is a trade name) to a good quality isolating transformer - then you have all the low leakage you want. (Remember inrush currents.)
Gregg ------Original Message----- -From: [email protected] -[mailto:[email protected]]On Behalf Of John Woodgate -Sent: Wednesday, January 30, 2002 5:24 PM -To: [email protected] -Subject: Re: Low Leakage Variac - - - -I read in !emc-pstc that [email protected] wrote (in -<[email protected]>) about 'Low Leakage -Variac', on Wed, 30 Jan 2002: - ->Can anyone provide me with the manufacturer and model of a -variac that they ->have used that does not add leakage to their product test results. - -Someone may have already produced one that has lower leakage, but you -won't get near-zero leakage, which is due to capacitance between the -winding and the core, unless you can get one with the core not -grounded. - -You can reduce the leakage with a grounded core by increasing the -thickness of insulation between the winding and the core. Not -difficult. --- -Regards, John Woodgate, OOO - Own Opinions Only. -http://www.jmwa.demon.co.uk -After swimming across the -Hellespont, I felt like a Hero. -PLEASE do NOT copy news posts to me by E-MAIL! - -------------------------------------------- -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: - [email protected] -with the single line: - unsubscribe emc-pstc - -For help, send mail to the list administrators: - Michael Garretson: [email protected] - Dave Heald [email protected] - -For policy questions, send mail to: - Richard Nute: [email protected] - Jim Bacher: [email protected] - -All emc-pstc postings are archived and searchable on the web at: - No longer online until our new server is brought online -and the old messages are imported into the new server. - ------------------------------------------- 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: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson: [email protected] Dave Heald [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: No longer online until our new server is brought online and the old messages are imported into the new server.
