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Old 2nd November 2004, 03:42 AM   #1
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Default Lower cost transformer?

Please pardon my noobieness for asking this...

I am building my first amp, but it must be on a budget. I need something around 24VAC@7A and I am having a hard time finding a transformer for less than $80-$100us. Can anyone recomend something cheaper?


I am wide open on design... dual secondaries, single centaped, EI, touroid, etc. I just need to find one that will supply enough power to run a 60ish Watt stereo.

I have done a search that returned hundreds of results but many threads are very, very, looooong and wander off topic a bit. Any help would be much apreciatedIs that a word?
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Old 2nd November 2004, 09:11 AM   #2
Nuuk is offline Nuuk  United Kingdom
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I'll leave this one for somebody living in the USA to finish voting and tell you where to buy a transformer.

But in the UK, which is usually more expensive than the USA, we can get a 160 VA transformer for around 32 USD!
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Old 2nd November 2004, 04:25 PM   #3
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Try www.partsexpress.com - Search for 'toroidal'
http://www.partsexpress.com/webpage....up_ID=605&SO=2
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Old 2nd November 2004, 04:33 PM   #4
Apex Jr is offline Apex Jr  United States
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Default BOY DO I HAVE A DEAL FOR YOU !

I have a perfect transformer for you. Priced Right...
Signal EI core 220V input 48 Volt Center Tap and a
24 Volt Center tap at 7 Amps.. USING 115 Volt Input
will give you your 24 Volt Center Tap and also a
12 Volt Center Tap at the 7 Amps you need..
PRICE ON CLEARANCE at $ 7.95 ea have about 200
I do however have a $20.00 minimum order...
check my website www.apexjr.com for other items
Steve @ Apex Jr.
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Old 2nd November 2004, 05:27 PM   #5
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Quote:
Originally posted by Nuuk
But in the UK, which is usually more expensive than the USA, we can get a 160 VA transformer for around 32 USD!
The last trafo I (custom) ordered was a 2x22V 528VA (12A ) dual secondaries toroid.
Cost was around 60 Euros, including transport by post office.

Lately I've been salvaging trafos.
Recycling is good for the environment.
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Old 2nd November 2004, 07:15 PM   #6
FBsHT is offline FBsHT  United States
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So....
When you say 24VCT do you mean 24-0-24? As in two 24V windings.

Or do you mean 12-0-12. One 24V winding with a tap in the center?

Sorry if I'm being dense but I've seen both ways called 24VCT.

FB
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Old 2nd November 2004, 07:15 PM   #7
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Quote:
Originally posted by uvellani
Try www.partsexpress.com - Search for 'toroidal'
http://www.partsexpress.com/webpage....up_ID=605&SO=2

Thanx! these prices are much better!
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Old 2nd November 2004, 07:57 PM   #8
joensd is offline joensd  Germany
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Another recent thread of many :
looking for afordable toroidal transformer
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Old 2nd November 2004, 10:42 PM   #9
mateo88 is offline mateo88  United States
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Hey Steve, do those transformers have hum at all? Looks like a great deal!
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Old 3rd November 2004, 12:04 AM   #10
dangus is offline dangus  Canada
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Amateur Radio swap meets can be great sources of parts. I picked up some new-in-box Hammond transformers, and a broadcast grade audio transformer. for a couple of bucks each.

If you arrive towards the end of the day, hang around the garbage cans because a lot of guys will dump stuff rather than cart it home.
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