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

Parts Where to get, and how to make the best bits. PCB's, caps, transformers, etc.

Where can I get custom power transformers
Where can I get custom power transformers
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 29th September 2019, 12:36 AM   #1
carlthess40 is offline carlthess40  United States
diyAudio Member
 
Join Date: Oct 2017
Location: Lake Mary Florida
Default Where can I get custom power transformers

A friend of mine has two amps that need new transformers made for them
They are from the late 80ís and very few where made. Maybe some of the first Hibyrd amps made
Aria WT100 is the make and model of these
Look at the pics
IMG_5354.JPGIMG_5353.JPGIMG_5352.JPGIMG_5351.JPGIMG_5335.JPGIMG_5334.JPGIMG_5333.JPG
  Reply With Quote
Old 29th September 2019, 04:20 AM   #2
vinylkid58 is offline vinylkid58  Canada
diyAudio Member
 
vinylkid58's Avatar
 
Join Date: May 2005
Location: Victoria, B.C.
Where can I get custom power transformers
Quote:
Originally Posted by carlthess40 View Post
They are from the late 80ís and very few where made.
Strange, as all the online reviews are around 2002/2003.

jeff
  Reply With Quote
Old 29th September 2019, 06:21 AM   #3
carlthess40 is offline carlthess40  United States
diyAudio Member
 
Join Date: Oct 2017
Location: Lake Mary Florida
Iím sure Iím wrong about the dates. Just going off of what the owner said
I need to do more research about it
Thanks for the heads up. I do know the company is no longer in business
  Reply With Quote
Old 29th September 2019, 09:00 PM   #4
Mark Tillotson is offline Mark Tillotson
diyAudio Member
 
Join Date: May 2018
Location: Cambridge UK
Can't read the manufacturing date sticker from those photos - but it ought to confirm the date!


Transformers don't fail without good reason, that's the first thing to address otherwise you risk a repeat performance.


Are the transformers marked?
  Reply With Quote
Old 29th September 2019, 10:23 PM   #5
carlthess40 is offline carlthess40  United States
diyAudio Member
 
Join Date: Oct 2017
Location: Lake Mary Florida
They belong to a friend of mine
I asked him who diagnosed these and he said four different technicians said the same thing
Iím scratching my head as well thinking how did the transformers go bad or one transformer ,
I need to get him to let me bring them home and hook my meters and scope up to them and check this out myself
I am on the same fence as you are , and believe something else wouldíve caused a transformer problem because thatís a pretty major issue there
I know the company is no longer in business
And I found a old email address for the owner and designer of these amplifiers
So I sent him a email and so far it has not bounced back to me saying the email address is no longer available
Fingers crossed that I get a reply
As these did carry a lifetime warranty
But the question is whoís life time? The company, or the owner of the amps? Lol
  Reply With Quote
Old 1st October 2019, 09:05 AM   #6
indianajo is offline indianajo  United States
diyAudio Member
 
indianajo's Avatar
 
Join Date: Jan 2010
Location: Jeffersonville, Indiana USA
Life of the corporation, which may be much shorter than the life of the design engineer or builder.
This is a vacuum tube amp.
You can't afford a custom transformer.
You can buy various standard transformers. You need to calculate the heater load, voltage and current. Then calculate the B+ voltage and load current. You can get those values from the tube charts.
Then find the hammond, guitar amp, or triodeelectronics.com transformer that will fit. One guitar amp shop is tubesandmore.com
You may have to drill new holes in the chassis for the mount screws.
Causes of transformer failure are lack of fuse in the heater load, lack of fuse in the B+ load. Make sure the fuses are 1 1/4" long, shorter ones will arc over. The next size up 2" is even better but cost about $20 each. The 480 V rated fuses also come in holders of three, not usually just one.
Newbie mistake is particularly use of 1n400x in the heater or B+ rectifier. Use a 1000 PIV 3 amp SS rectifier if necessary. Make sure any SS rectifier is over 3/4" long, as dust will short out a 1n400x case after a few years. I find the best source of these diodes is dead CRT displays - nobody stocks them. The short ones work today, just not 5 years from now.
If you need both vacuum tube and transistor voltages, the best solution is two different transformers. The usual US source of transistor or op amp voltage transformers is antek.inc although newark has recently found a source at 1/3 their previous prices.
If chassis space is a problem you may have to mount a toroid 2nd transformer up in the air on a bracket above the other one.
__________________
Dynakit ST70, ST120, PAS2,Hammond H182(2 ea),H112,A100,10-82TC,Peavey CS800S,1.3K, SP2-XT's, T-300 HF Proj's, Steinway console, Herald RA88a mixer, Wurlitzer 4500, 4300

Last edited by indianajo; 1st October 2019 at 09:14 AM.
  Reply With Quote
Old 1st October 2019, 11:29 AM   #7
tomtt is offline tomtt
diyAudio Member
 
tomtt's Avatar
 
Join Date: Aug 2002
Location: kansas city mo, and on occasion, around the world ...
Quote:
Originally Posted by indianajo View Post

You can't afford a custom transformer.
I've had custom transformers made.

They came with a one time setup fee,

Of $25 US.

The cost of the transformers, $12.50 US each.

The Yellow Pages, might be a place to start looking .....
__________________
internet photographer

Last edited by tomtt; 1st October 2019 at 11:33 AM.
  Reply With Quote
Old 1st October 2019, 11:41 AM   #8
zjjwwa is offline zjjwwa  Poland
diyAudio Member
 
zjjwwa's Avatar
 
Join Date: Oct 2011
Location: Warsaw
Where can I get custom power transformers
Custom transformers (toroid):
Transformatory toroidalne - Producent transformatorow Toroidy.pl
Power transformers - Internet shop Toroidy.pl
  Reply With Quote
Old 1st October 2019, 12:53 PM   #9
jackinnj is offline jackinnj  United States
diyAudio Member
 
jackinnj's Avatar
 
Join Date: Apr 2002
Location: Llanddewi Brefi, NJ
Where can I get custom power transformers
I rewound a transformer for a ham radio transceiver -- decades ago -- it's a laborious project but certainly doable.

Antek has an entire series of torroidal transformers for tube gear, and Pete Millett has had Edcor make custom transformers for his projects.
  Reply With Quote
Old 1st October 2019, 01:10 PM   #10
GaryM is offline GaryM  United States
diyAudio Member
 
Join Date: Feb 2008
Mercury Magnetics will rewind your defective transformers. They used to make custom transformers as well. You should try them. Mercury Magnetics - Amp Transformers, Output Transformers & Chokes
  Reply With Quote

Reply


Where can I get custom power transformersHide 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
Custom-made transformers in USA cathoderay Tubes / Valves 20 2nd January 2016 02:24 PM
FS: CUSTOM MADE R-CORE TRANSFORMERS DIYspaceW Swap Meet 3 8th March 2013 08:42 PM
Hypex 400 W Power Transformers Custom wounds domtweaker Swap Meet 0 27th December 2011 02:22 PM
NICE; Custom 250VA Toroidal Power Transformers; 34vac/7a, plus an Auxiliary Winding dozer Swap Meet 0 19th January 2009 10:10 AM
Custom transformers in Europe Nisbeth Parts 2 30th November 2004 11:50 PM


New To Site? Need Help?

All times are GMT. The time now is 10:34 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 14.29%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright ©1999-2019 diyAudio
Wiki