| Papageoff |
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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| Nuuk |
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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| Apex Jr |
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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| carlosfm |
| 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:eek: ) 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.:D |
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| FBsHT |
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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| Papageoff |
Thanx! these prices are much better! |
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| mateo88 |
| Hey Steve, do those transformers have hum at all? Looks like a great deal! |
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| dangus |
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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| Apex Jr |
These transformers came out of Harmon International
which is JBL, Infinity and others from one of there
discontinued amps and they do not have any hum as
far as I know. ........ Steve @ Apex Jr. |
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| mateo88 |
| Awesome, you'll probably be getting an order from me sometime soon. :) |
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| falcott |
| quote: |
apreciatedIs that a word? |
Yes it is.
appreciate v. 1 value. 2 understand. 3 rise in value.
:) |
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| Papageoff |
| quote: | Originally posted by FBsHT
So....
When you say 24VCT do you mean 24-0-24? As in two 24V windings.
FB |
Yes. |
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| random_id |
Pardon my confusion...
I though a transformer rating of 24 VCT means that you can get +12, ground, and -12 from it (unrectified). So is it actually +24, 0, & -24?
If this is true, that would be a lot cheaper for me. I'm making a lot more gainclones. :cool: |
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| Apex Jr |
Transformer that 24 Vct is 12V - 0 - 12V
Steve @ Apex Jr |
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| FBsHT |
If you want 24V - 0 - 24V you better clarify with Steve @ Apex Jr because I believe he means 12V - 0 - 12V when he says 24V center tap.
FB |
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| mateo88 |
12-0-12 is what 24v center tapped is. Dual 24v rails are two 24v rails.
@Steve: Do these transformers have dual secondaries "underneath the wrapper" like on many center tapped transformers? |
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| Papageoff |
Well that clears up some confusion.
Thanx |
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| Apex Jr |
I'll catch up before I go on vacation...
The transformer is set up as a 220 V input and will
deliver 48 Vct and a 24Vct at 7 Amps........
Using 115 Volt as an input you will get 24 Vct
12V - 0 - 12 V and a 12 Vct 6V - 0 - 6V also at 7 amps
as secondarys...Oh.. I should let you know they
weigh 10 lbs each ....... Steve @ Apex Jr. |
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| random_id |
two questions:
1. With a transformer like this one, is it possible to combine both secondaries to get a higher voltage (i.e., 12 + 6 = 18)?
2. If not, how does a gainclone sound running off of a 12-0-12 transformer? |
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