Go Back   Home > Forums > >

Construction Tips Construction techniques and tips

The migration to our new platform will be happening today at 11AM GMT/UTC, Wednesday 8th December 2021. See this time in your city. The site will be down for 24-48 hours while we perform the migration. Read more here.
Transformer Orientation
Transformer Orientation
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
Old 7th August 2021, 08:45 PM   #1
WntrMute2 is offline WntrMute2  United States
diyAudio Member
 
WntrMute2's Avatar
 
Join Date: Jan 2010
Location: Detroit area
Default Transformer Orientation

I am building a pair of 3C34 monoblocks and have a two questions regarding transformer orientation. The Monolith S-11 output transformers are in cases so the laminations are not visible. I am going to be utilizing a toroid transformer with a screen and steel cover for the Coleman regulators. I can mount the toroid above the deck as shown or below in the same location. I could also mount it vertically below deck. Is one preferable to the others?

Click the image to open in full size.

Click the image to open in full size.

The Triad box is a stand-in for an Edcor power transformer.

Second question is related to the choke orientation with the same Monolith transformers. Is one orientation preferable?

Click the image to open in full size.

Click the image to open in full size.
Sorry for the distorted images. I have no idea what I did wrong!
TIA

Last edited by WntrMute2; 7th August 2021 at 08:48 PM.
  Reply With Quote
Old 8th August 2021, 07:43 PM   #2
duncan2 is offline duncan2  United Kingdom
diyAudio Member
 
Join Date: Mar 2013
Location: Scotland.
Have a read of the comments here on EE Stack Exchange-


Audio Transformer Orientation on PCB - Electrical Engineering Stack Exchange
  Reply With Quote
Old 8th August 2021, 08:08 PM   #3
WntrMute2 is offline WntrMute2  United States
diyAudio Member
 
WntrMute2's Avatar
 
Join Date: Jan 2010
Location: Detroit area
Thanks Duncan2. Interesting read. One of the basic problems is the encased Monolith transformers prevent me from seeing the laminations' orientation. I sent an email to Monolith and am awaiting a response.
  Reply With Quote
Old 8th August 2021, 09:13 PM   #4
Elvee is online now Elvee  Belgium
diyAudio Member
 
Elvee's Avatar
 
Join Date: Sep 2006
The advice I gave here is applicable:
C Core transformers orientation

Connect the secondary of the mystery transformer to a 6.3VAC source, and magnetically explore its surroundings
__________________
. .Circlophone your life !!!! . . ♫♪ My little cheap CirclophoneŠ ♫♪
Electrify your daily life!!! ....⚡⚡ ELEKTRIA ⚡⚡
  Reply With Quote
Old 8th August 2021, 10:49 PM   #5
WntrMute2 is offline WntrMute2  United States
diyAudio Member
 
WntrMute2's Avatar
 
Join Date: Jan 2010
Location: Detroit area
Thanks Elvee.
  Reply With Quote
Old 26th August 2021, 08:35 PM   #6
WntrMute2 is offline WntrMute2  United States
diyAudio Member
 
WntrMute2's Avatar
 
Join Date: Jan 2010
Location: Detroit area
Another question. I will have two Triad chokes. Can I mount them like shown with an aluminum plate between? Still will need to determine orientation though. How does one test choke orientation - both with respect to the output transformer as well as the power transformer or even with each other?
Can an oscilloscope be used as the "probe"?
Attached Images
File Type: jpg PXL_20210826_192342826.jpg (482.6 KB, 87 views)
  Reply With Quote
Old 17th October 2021, 04:44 PM   #7
WntrMute2 is offline WntrMute2  United States
diyAudio Member
 
WntrMute2's Avatar
 
Join Date: Jan 2010
Location: Detroit area
Still finalizing the transformer and choke orientation for this build.

The drawing attached shows the quietest position for the transformers as determined by listening to the output transformer via some headphones with the three power transformers powered up one at a time. I also listened to the chokes and the position shown is the quietest I could obtain.

I am still wondering if the chokes will have an impact on the OT when they are powered up?

Can I just apply the 120VAC wall power and listen to the OT as I did with the transformers? My gut says sure - as they can handle the 450 volts of the B+ without problems.

Also, still trying to determine if stacking the two chokes, one on top and one on the bottom of the top plate will be OK.
Transformer Orientation-screenshot-2021-10-17-111412-jpg
TIA
Dave
Attached Images
File Type: jpg Screenshot 2021-10-17 111412.jpg (100.0 KB, 47 views)
  Reply to this post

Reply


Transformer OrientationHide this!Advertise here!
Thread Tools

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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Mains transformer orientation Rocky Tubes / Valves 22 1st November 2019 12:53 AM
Orientation of E-I core OPT and toroidal power transformer tomchr Tubes / Valves 4 27th December 2009 06:02 AM
Transformer orientation Skorpio Pass Labs 5 12th May 2006 02:25 AM
EI transformer orientation ultrachrome Power Supplies 3 28th March 2005 05:11 PM
Toroidal transformer mounting & orientation nic.hanno Parts 0 9th April 2004 12:32 PM


New To Site? Need Help?

All times are GMT. The time now is 08:52 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 13.64%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.
Copyright ©1999-2021 diyAudio
Wiki