How to mount a toroidal transformer vertically? - Page 2 - 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 23rd September 2013, 10:33 PM   #11
AJT is offline AJT  Philippines
diyAudio Moderator
 
AJT's Avatar
 
Join Date: May 2003
Location: Palatiw, Pasig City
Click the image to open in full size.
__________________
the best advertisement for a good audio design is the number of diy'ers wanting to build it after all the years....never the say so of so called gurus....
  Reply With Quote
Old 24th September 2013, 12:40 AM   #12
diyAudio Member
 
Join Date: Jul 2012
Location: Arizona
Quote:
Originally Posted by soundchaser001 View Post
If the U bolt is conductive and if it is electrically connected to the chassis (which I assumed is metal) it will result in a shorted turn. If you can guarantee insulation of the U bolt from the chassis it will work but will not be a sound design since these locations can be difficult to insulate permanently.

I've always used an L bracket for vertical mounting.

Matt
Hi,

Isn't your L bracket metal, too? I assume you still bolt the transformer to the bracket, don't you? And the bracket is bolted or screwed to the case?

Thanks.
  Reply With Quote
Old 24th September 2013, 12:41 AM   #13
diyAudio Member
 
Join Date: Jul 2012
Location: Arizona
Quote:
Originally Posted by Apex Jr View Post
Sorry, I sell them.. I'm a dealer. Apex Jr.Home Page

Contact me with your address and I'll send you a pair at NO COST

Steve
Hi,

I went to your web site and didn't see these. Could you provide a link directly to these items?

Thanks.
  Reply With Quote
Old 24th September 2013, 01:09 AM   #14
diyAudio Member
 
grimberg's Avatar
 
Join Date: Oct 2002
Location: California, USA
Quote:
Originally Posted by Apex Jr View Post
They make these and I have them...
Steve,

Could you please post what the distance is between the center hole and the bottom plate? That will give us an idea of how big a toroid it can hold.
  Reply With Quote
Old 24th September 2013, 01:45 AM   #15
mattmcl is offline mattmcl  United States
diyAudio Member
 
Join Date: Apr 2009
Location: Erie, CO
Quote:
Originally Posted by toxic ingestion View Post
Hi,

Isn't your L bracket metal, too? I assume you still bolt the transformer to the bracket, don't you? And the bracket is bolted or screwed to the case?

Thanks.
Toroidal transformers still mystify me. I believe it has something to do with putting what is essentially a solid metal ring around the transformer, as opposed to a mounting bolt through the middle. I seem to remember reading that fully enclosing the toroid in metal does the same thing, but then I've also seen jacketed toroids for sale.

I'm going with the L-bracket method but I'm interesting in hearing the theory behind this.
  Reply With Quote
Old 24th September 2013, 01:51 AM   #16
AJT is offline AJT  Philippines
diyAudio Moderator
 
AJT's Avatar
 
Join Date: May 2003
Location: Palatiw, Pasig City
Quote:
Originally Posted by toxic ingestion View Post
Hi,

Isn't your L bracket metal, too? I assume you still bolt the transformer to the bracket, don't you? And the bracket is bolted or screwed to the case?

Thanks.
there are rubber disks on either sides of the traffo so bolting is no problem...
__________________
the best advertisement for a good audio design is the number of diy'ers wanting to build it after all the years....never the say so of so called gurus....
  Reply With Quote
Old 24th September 2013, 01:54 AM   #17
mattmcl is offline mattmcl  United States
diyAudio Member
 
Join Date: Apr 2009
Location: Erie, CO
Quote:
Originally Posted by AJT View Post
there are rubber disks on either sides of the traffo so bolting is no problem...
So theoretically I could wrap a length of rubber around the toroid, which would insulate it from the u-bolt and the chassis?
  Reply With Quote
Old 24th September 2013, 02:00 AM   #18
AJT is offline AJT  Philippines
diyAudio Moderator
 
AJT's Avatar
 
Join Date: May 2003
Location: Palatiw, Pasig City
yes go ahead and do it....
remember also that rubber under is merely for mechanical protection, even without it, the bolt is still insulated due to the fact that the clamp on the other side does not touch the chassis...

the idea here is that the bolt must never form a complete electrical circuit so that the resulting shorted turn ensures trouble....
i see ApexJr has some nice vertical mounting hardware, mine is made from 2mm thick aluminum plate so formed....
__________________
the best advertisement for a good audio design is the number of diy'ers wanting to build it after all the years....never the say so of so called gurus....
  Reply With Quote
Old 24th September 2013, 06:54 PM   #19
diyAudio Member
 
Join Date: Dec 2001
Location: South Sweden
I used "nailplates" or whatever they are called in english, used for nailing wooden beams together when you erect a house frame.

To explain I add a link to a swedish/finnish supplier for general hardware
Vinkelbeslag - Biltema

Price is in euros. This is in turn is 90*90mm and 3 mm thick. Zinc anodized and provided with enough holes to fit anything anywhere...

Should be readily available in any well stocked hardware store?
__________________
listen! Can you hear that ...
  Reply With Quote
Old 24th September 2013, 07:20 PM   #20
diyAudio Member
 
soundchaser001's Avatar
 
Join Date: Oct 2007
Location: Kanata
Quote:
Originally Posted by mattmcl View Post
So theoretically I could wrap a length of rubber around the toroid, which would insulate it from the u-bolt and the chassis?
No you can't. the U-bolt would form a conductive loop with the chassis (assuming that the chassis is metal and they are not insulated from each other). Wrapping the transformer does nothing.

The reason why the plates work is becasue the bolt only goes through the centre and does not continue around the out side to form a continuous loop. The rubber is there to protect the insulation on the transformer from being abraded when it is clamped.
Attached Images
File Type: jpg loop.jpg (7.0 KB, 212 views)
  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
Why you should mount your SiC mosfets vertically d to the g Pass Labs 9 23rd July 2013 12:27 AM
Mount rectifier above torroidal transformer? platplaas Tubes / Valves 13 28th February 2011 04:10 AM
Electrical safety with pcb mount transformer diycore Construction Tips 6 9th September 2009 09:35 AM
PCB mount line input transformer question audiowize Tubes / Valves 0 11th July 2008 07:05 PM


New To Site? Need Help?

All times are GMT. The time now is 07:59 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