+/- 30VDC from toroid - diyAudio
Go Back   Home > Forums > Amplifiers > Power Supplies

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 30th March 2008, 12:20 AM   #1
diyAudio Member
 
hollowman's Avatar
 
Join Date: Jan 2007
Blog Entries: 3
Default +/- 30VDC from toroid

The image below is part of the datasheet of an Avel-Lindberg Y23 250VA 30+30 VAC toroid transformer.

I need two 30VAC center-tapped (CT): this means two separate 30VAC with respect to CT common. I've tried a couple of diff. wiring configs, per datasheet below. The second diag. is a CT config (RED+ORNG is common 0V), but with 115VAC, this only outputs ~15VAC.

Are two 30VACs with CT possible with this transformer?

Thanks for any info you can provide.

(Note: I'm working with std. U.S. 115VAC mains.)
Attached Images
File Type: jpg avel_y23.jpg (33.3 KB, 211 views)
  Reply With Quote
Old 30th March 2008, 12:35 AM   #2
TheMG is offline TheMG  Canada
diyAudio Member
 
Join Date: Jan 2008
Since you're on 115VAC mains, you need to use the configuration in the first diagram (windings in parallel) for the primary, and the configuration in the second diagram (windings in series) for the secondary.

So 115VAC to primary windings in parallel, will give 30-0-30 output to the secondaries in series.
  Reply With Quote
Old 30th March 2008, 01:15 AM   #3
diyAudio Member
 
hollowman's Avatar
 
Join Date: Jan 2007
Blog Entries: 3
Default It works!

Quote:
Originally posted by TheMG
Since you're on 115VAC mains, you need to use the configuration in the first diagram (windings in parallel) for the primary, and the configuration in the second diagram (windings in series) for the secondary.

So 115VAC to primary windings in parallel, will give 30-0-30 output to the secondaries in series.
We're in business!
The way datasheet segregates the configs., with the horiz. rule, IMO adds to some confusion. Earlier, I though about combining these two configs, but then wussed out thinking the manuf. didn't specify this approach due to possible safety issues.

Anyway, thanks for your help!
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
toroid ID help BeerCan Power Supplies 2 24th May 2011 11:38 PM
LM3886 -- outputing 30vdc mudihan Chip Amps 6 10th July 2008 09:32 AM
Trade a 40V 400VA Toroid for 20V 300VA Toroid john65b Swap Meet 7 10th October 2006 03:49 AM
Problem with TDA7262 + 30Vdc??? Zero Cool Chip Amps 4 20th June 2005 04:59 AM
What amp for this toroid ?? Ford_V6 Solid State 3 5th July 2003 10:53 PM


New To Site? Need Help?

All times are GMT. The time now is 07:28 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2