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Old 2nd July 2011, 06:33 AM   #1
44250 is offline 44250  Serbia
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Question is it possible to make a transformer out of choke?

I have found the muffle core of a public lighting that looks exactly like EI transformer core,only the middle pillar is a 3mm shorter than two side pillars. If i would rewind it into a transformer i would make it E/I/E/I/E/I/E alternating side of each layer one after other,but my question is-is it worth trying,what would be the result? Would it be reliable transformer or something that might work,BUT... ? Here are some pictures...

Thanks for your answers in advanced!
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Old 2nd July 2011, 07:33 AM   #2
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I think you call this a 'choke'. A muffler is the sound pipe underneath a car....
You could send a message to the moderators to change the title.

jan didden
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Old 2nd July 2011, 07:45 AM   #3
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Done. I suspect Google translate!
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Old 2nd July 2011, 07:51 AM   #4
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Are you fast!

Yes,it is google translator...it mostly translates good,but technical words are often "misstranslated". As it is written above, i'm sorry for grammar errors...

Thanks for Your understandig!
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Old 2nd July 2011, 08:10 AM   #5
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It will work as a transformer but it wont be very efficient because of the air gaps.

Chokes and Transfromers have different magnetic requirements.
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Old 2nd July 2011, 09:34 AM   #6
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Ok,I thought so... Well than,I will turn the magnetic core back and exchange it for something else.

Thank you for the answer!
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Old 2nd July 2011, 10:24 AM   #7
sreten is offline sreten  United Kingdom
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Hi,

It would work if you rotated every other layer so there is no air gap.

It would saturate first at the point of the air channels, effectively
meaning you have less iron in the core than it would first appear.

Those air channels would not cause inefficiency, it will work.

rgds, sreten.
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Old 2nd July 2011, 01:23 PM   #8
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Use for an SE amp, although the gap looks a bit big even for that.
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Old 2nd July 2011, 10:31 PM   #9
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I have decided to turn them back and wait for better chance with other transformer core...I have four of these and it is too much job and not much profit. If I have to make it by my hands,IŽll try to make it worth. Thanks for advices everyone!
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Old 3rd July 2011, 02:30 AM   #10
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Cut the Legs back to the same length as the center pillar...with a sharp shears. Then file and lap the edges en mass by clamping in a vice. Alas too late because you returned them;(
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