tranformer's magnetic flux

jarthel · 26th October 2006, 02:46 PM

in EI cores is the magnetic flux higher on the sides or front/back?

here's a photo of a transformer (actually a choke but you'll get the idea): http://img56.imageshack.us/my.php?im...titled1vb4.gif

trying to figure out the best placement ( at least I hope it would be the best) of the transformers.

thanks for the help

aerius · 26th October 2006, 04:24 PM

Depends. I found an easy way to do a rough check using a small neodymium magnet. With the transformer powered up, hold the magnet between your fingers about 2-3 inches from the transformer and make a slow circle around it. In some places the magnet will vibrate more, in some places less. Where there's less vibration there's less magnetic flux getting leaked.

26th October 2006, 02:46 PM	#1
jarthel diyAudio Member Join Date: Jan 2002 Location: somewhere in Australia	tranformer's magnetic flux in EI cores is the magnetic flux higher on the sides or front/back? here's a photo of a transformer (actually a choke but you'll get the idea): http://img56.imageshack.us/my.php?im...titled1vb4.gif trying to figure out the best placement ( at least I hope it would be the best) of the transformers. thanks for the help

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26th October 2006, 04:24 PM	#2
aerius diyAudio Member Join Date: Sep 2006	Depends. I found an easy way to do a rough check using a small neodymium magnet. With the transformer powered up, hold the magnet between your fingers about 2-3 inches from the transformer and make a slow circle around it. In some places the magnet will vibrate more, in some places less. Where there's less vibration there's less magnetic flux getting leaked.

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