Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Solid State Talk all about solid state amplification.

Stacking toroids - Ok?
Stacking toroids - Ok?
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
Thread Tools Search this Thread
Old 9th September 2002, 06:16 PM   #21
skaara is offline skaara  Slovenia
diyAudio Member
Join Date: Jun 2002
Location: Europe, Slovenia
Ill try to stack (fused!) 1.5kW ones when i get the chasis, ill report the results
  Reply With Quote
Old 10th September 2002, 09:20 AM   #22
hifiZen is offline hifiZen  Canada
diyAudio Member
hifiZen's Avatar
Join Date: May 2001
Location: Mountain View, CA

the only reason the leakage flux is low is bacause the core has a high magnetic permeability, while the surrounding materials (air, mainly) have a low permeability. The magnetic flux takes the "path of least resistance" and stays in the core. BUT... stack a nice big chunk of grain-oriented silicon steel (eg, a second transformer) right up against it, and you're going to have some flux in that other piece of iron. It will all depend on how close physically the other core is. I've never tried it myself, but I guarantee, there will be some coupling. How much... ? Dunno. Like I said, it will depend on how closely coupled that second core is. Try the following experiment: stack two toroids, and connect the primaries of the first to mains voltage. Then, check to see what voltage appears on the other transformer's coils... without other circuitry connected, you'll be able to see the effect of the flux leakage.

I still maintain that to avoid unnecessary heat generation, and for optimum channel isolation, you want those bad boys separated. At least make sure there's some spacers in between them..
- Chad.
  Reply With Quote
Old 10th September 2002, 11:10 AM   #23
The Saint is offline The Saint  Australia
diyAudio Member
The Saint's Avatar
Join Date: Jul 2002
Location: Launceston, TAS, Australia
Stacking Toriodals is no problem, The magnetic field in the core is very tight , only a 2mm rubber insulator between each core is needed. You will have no problem with cross-coupling.


Anthony Holton
  Reply With Quote
Old 11th September 2002, 05:40 AM   #24
DieterD is offline DieterD
diyAudio Member
Join Date: Dec 2001
Location: Howick South Africa
I have stacked 4 tiroidals, two on top of each other, and these twins next to each other, producing + - 70 volts (rectified) and we use it to run a 300 watt disco amp, runs all night flat out and we have to date had no problems. I did not even bother to separate them with rubber washers etc.
I will check next time they have run for a few hours to see if they produce any major heat.

  Reply With Quote


Stacking toroids - Ok?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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
NOS Dac stacking Jeffrey Davison Digital Line Level 8 7th April 2012 08:12 AM
Bench PS: stacking DC supplies ErikdeBest Equipment & Tools 2 6th March 2009 02:00 PM
Stacking Opamps?? fmak Digital Source 4 13th August 2004 07:02 AM
“Stacking” Toroids??? Jan Dupont Parts 2 10th June 2003 09:47 AM
Core Stacking fr0st Parts 1 20th March 2003 09:07 AM

New To Site? Need Help?

All times are GMT. The time now is 09:29 AM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 16.67%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio