I still think those 1.8 figures are telling you how to figure out what size capacitor to use...
Andy Wander Verrex Corporation -----Original Message----- From: turbulatordude [mailto:[EMAIL PROTECTED] Sent: Monday, October 25, 2004 2:31 AM To: [EMAIL PROTECTED] Subject: [CAD_CAM_EDM_DRO] Re: current rating of transformers > >This is where I'm confused. > > > >If I use the full winding, 24 volts, do I really get 5.8 amps ? > >and with center tap, 12 volts, 8 amps > >but using a choke at 24 volts, I can get the full 10 amps ? > > > Yes, probably. But, inductor input filters usually have poor regulation, > meaning the voltage droops substantially under load. But, the peak currents > in the transformer will be greatly smoothed out, so the RMS rating of the > transformer is fully available. Capacitor input filters draw strong pulses > of current right around the voltage peak, and this is a worst-case situation > for copper losses. So, all capacitor input filters will deliver less > current > from the transformer for the same heating. > > Jon It sounds like a trade-off. Higher rating with an inductor and better regulation with a CAP. What really bothered me was that the printed catalogue is the only place I found any notes about this and it sounds like if I need 10 amps output, I need to multiple my required amps by 1.8 and then order the transformer for that much higher rating. The way is is written, it sounds like I get 1.8x the listed amps. Darn confusing. Thanks for the information. Dave Addresses: FAQ: http://www.ktmarketing.com/faq.html FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/ Post Messages: [EMAIL PROTECTED] Subscribe: [EMAIL PROTECTED] Unsubscribe: [EMAIL PROTECTED] List owner: [EMAIL PROTECTED], [EMAIL PROTECTED], [EMAIL PROTECTED] Moderator: [EMAIL PROTECTED] [EMAIL PROTECTED] [EMAIL PROTECTED] [Moderators] URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO OFF Topic POSTS: General Machining If you wish to post on unlimited OT subjects goto: aol://5863:126/rec.crafts.metalworking or go thru Google.com to reach it if you have trouble. http://www.metalworking.com/news_servers.html http://groups.yahoo.com/group/jobshophomeshop I consider this to be a sister site to the CCED group, as many of the same members are there, for OT subjects, that are not allowed on the CCED list. NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING THEM. DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........ bill List Mom List Owner Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
