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Old 19th January 2005, 08:59 PM   #1
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Join Date: May 2002
Location: oz
Default transformer power/weight ratio

Hi All

Does anybody know of a "rule of Thumb" for estimating the VA rating of transformers (non toroid) based on weight, I seem to recall having read of some issue like this somewhere.
I Have some old trafo's I bought some 20 years ago in a surplus shop, they were advertised as being 50 V ct 50A but having seen some photos of some others on the net , I suspect they may not be so.
Wire on secondaries is substantial guage also.

I will need to weight them but of the top of my head they are rather heavy though not massively huge
Thanks in advance
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Old 19th January 2005, 10:39 PM   #2
Stocker is offline Stocker  United States
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The more scientific sounding rule of thumb is cross-sectional area of the the core. There is a chart out there...somewhere.
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