Lower cost transformer?

Papageoff · 2nd November 2004, 02:42 AM

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?

Nuuk · 2nd November 2004, 08:11 AM

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!

uvellani · 2nd November 2004, 03:25 PM

Try www.partsexpress.com - Search for 'toroidal'
http://www.partsexpress.com/webpage....up_ID=605&SO=2

Apex Jr · 2nd November 2004, 03:33 PM

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.

carlosfm · 2nd November 2004, 04:27 PM

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.

FBsHT · 2nd November 2004, 06:15 PM

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

Papageoff · 2nd November 2004, 06:15 PM

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!

joensd · 2nd November 2004, 06:57 PM

Another recent thread of many :
looking for afordable toroidal transformer

mateo88 · 2nd November 2004, 09:42 PM

Hey Steve, do those transformers have hum at all? Looks like a great deal!

dangus · 2nd November 2004, 11:04 PM

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.

2nd November 2004, 02:42 AM	#1
Papageoff diyAudio Member Join Date: Oct 2004 Location: Jax, FL	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?

2nd November 2004, 08:11 AM	#2
Nuuk diyAudio Member Join Date: Feb 2003 Location: Somerset, SW England	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! __________________ The truth need not be veiled, for it veils itself from the eyes of the ignorant.

2nd November 2004, 03:33 PM	#4
Apex Jr diyAudio Member Join Date: Jun 2002 Location: Torrance, Calif	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.

2nd November 2004, 06:57 PM	#8
joensd diyAudio Member Join Date: Dec 2001 Location: Germany	Another recent thread of many : looking for afordable toroidal transformer __________________ jens

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2nd November 2004, 03:25 PM	#3
uvellani diyAudio Member Join Date: Oct 2004	Try www.partsexpress.com - Search for 'toroidal' http://www.partsexpress.com/webpage....up_ID=605&SO=2

2nd November 2004, 06:15 PM	#6
FBsHT diyAudio Member Join Date: Jul 2004 Location: Oregon	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

2nd November 2004, 09:42 PM	#9
mateo88 diyAudio Member Join Date: May 2004 Location: Argyle, Texas	Hey Steve, do those transformers have hum at all? Looks like a great deal!

2nd November 2004, 11:04 PM	#10
dangus diyAudio Member Join Date: May 2004 Location: Vancouver Island	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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