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Old 21st April 2010, 08:37 AM   #1
sekhar is offline sekhar  India
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Talking hand made 800VA EI Transformer
here is all hand made 800VA transformer for my new amp......................


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regards
sekhar
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Old 21st April 2010, 11:36 AM   #2
MondyT is offline MondyT  United Kingdom
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Hi Sekhar
Looks like you have put a lot of effort into the project and I hope it works well as it looks.

If the transformer is a mains transformers, which it looks like, please be sure that you test the isolation between primary and secondary thouroughly BEFORE YOU POWER IT UP! The insulation resistance should be at least 5 Meg Ohms using as standard 500V megger tester. You also need to test for any signs of ionisation or breakdown between primary and secondary at a voltage of at least 2000v rms. Safety must come first before any form of performance.

All the best
Ray
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Old 21st April 2010, 11:45 AM   #3
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I think you need more pictures.
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Old 21st April 2010, 08:02 PM   #4
rajudp is offline rajudp  India
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Default 800va transformer
what is the wire size and core size you are using,
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Old 22nd April 2010, 03:41 AM   #5
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Well done.
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Old 22nd April 2010, 07:34 AM   #6
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Such transformer can strongly hoot under loading.
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Old 22nd April 2010, 09:00 AM   #7
luka is offline luka  Slovenia
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U damn, very nice, I like it, I know how slow this goes, done one myself
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Old 22nd April 2010, 04:53 PM   #8
sekhar is offline sekhar  India
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Quote:
Originally Posted by rajudp View Post
what is the wire size and core size you are using,
it is a 25-0-25V @ 8A............It uses 15SwG as secondary wire and the core size is 5........







regards
sekhar
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Old 22nd April 2010, 04:56 PM   #9
sekhar is offline sekhar  India
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Quote:
Originally Posted by Prophetmaster View Post
Such transformer can strongly hoot under loading.
wat do mean by "strongly hoot" under loading...........




regards
sekhar
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Old 22nd April 2010, 06:02 PM   #10
Moset is offline Moset  Sweden
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Wow, great job! How long did it take?
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