Anyone know of a US source for ESL toroids? - Page 7 - diyAudio
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Old 25th May 2010, 02:44 AM   #61
mavric is offline mavric  United States
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Default high voltage low ampere

My conculsion would be that the more surface area of the wire or winding, would be stable at high voltage. I know currunt flows around the wire and not thru it, so to me, that cheaper coil may be more efficient. But the load would be compramised, i believe there would be more resistance using the cheaper coil. just some thoughts.
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Old 28th November 2011, 08:12 AM   #62
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Calvin... you have got me ordering two of these

http://www.antekinc.com/details.php?p=33

You have mentioned 6v and I read someone else say minimum 25v... he was probably talking full range?? Regardless I will get either the 25v or 6v 50va. Always remember regarding math and electronics I never know what the help I am talking about. Merely typing and ordering...
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Old 28th November 2011, 08:23 AM   #63
SM7UYJ is offline SM7UYJ  Sweden
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With 25V sec. you get 230/25 = 9.2, using two toroids you get a teoretical transformation ratio 1:18 - unfortunatly way to low!

With a 6V trafo you would get 230/6 = 38.3, two toroids => 1:76

So using the 25V version trafo, you will need 8 toroids to get abt. the same transformation ratio as using two 6V!

/Roger
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Old 28th November 2011, 08:24 AM   #64
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Quote:
Originally Posted by joojoo1234 View Post
Calvin... you have got me ordering two of these

Antek - AN-0525

You have mentioned 6v and I read someone else say minimum 25v... he was probably talking full range?? Regardless I will get either the 25v or 6v 50va. Always remember regarding math and electronics I never know what the help I am talking about. Merely typing and ordering...
For hybrid ESL's, I recommend a pair of these trannys driving each panel:
http://www.antekinc.com/details.php?p=27

Last edited by CharlieM; 28th November 2011 at 08:32 AM.
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Old 28th November 2011, 09:15 AM   #65
Calvin is offline Calvin  Germany
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Hi,

the theoretical U is N1/N2 or V1/V2, which gives 1:76 for a 6V/230V pair.
Connected in parallel on the 6V-side and in series on the 230V-side.
In praxis You need to include the efficiency of the tranny, which is typically around 90% in the required wattage-class.
So the effective U would be 1/(76x0.9) ~ 1:68.

jauu
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Old 28th November 2011, 09:22 AM   #66
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Never order anything until I talk to you all. Luckily I waited as I was about to order the 25v version...
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Old 28th November 2011, 09:24 AM   #67
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Smile I am going to have to dive into some electrical theory

Quote:
Originally Posted by SM7UYJ View Post
With 25V sec. you get 230/25 = 9.2, using two toroids you get a teoretical transformation ratio 1:18 - unfortunatly way to low!

With a 6V trafo you would get 230/6 = 38.3, two toroids => 1:76

So using the 25V version trafo, you will need 8 toroids to get abt. the same transformation ratio as using two 6V!

/Roger
Later. Okay, thanks!
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Old 28th November 2011, 09:33 AM   #68
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Smile took your advice and ordered 2 per speaker

Quote:
Originally Posted by CharlieM View Post
For hybrid ESL's, I recommend a pair of these trannys driving each panel:
Antek - AN-0506
just tell me what to do.

Going to order a variable low power high voltage supply prebuilt. Know enough to do that I believe on my own.

I think I need a high voltage multiplier... found those on ebay. Some resistors high voltage.... well do me a favor... I will stay at this thread and update it with what I bought or thinking about buying.
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Old 28th November 2011, 09:41 AM   #69
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What is this update boxes thing on the antek order site? That is strange.
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Old 28th November 2011, 09:59 AM   #70
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Well I ordered 8 of those AN-0506 transformers. i have spare metal and family. As I am still learning I am forced to ask this question. If I use 3 of those per speaker would it be enough to drive a full range... say to 100-150 mhz if I should decide to do a design like that later?

Last edited by joojoo1234; 28th November 2011 at 10:24 AM.
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