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Old 8th February 2009, 02:47 PM   #1
jeapel is offline jeapel  Canada
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Default my saturation test ??

I would like to get your opinion on my saturation test.
My idea is the secondary inductance should drop
with DC on primary near to saturation but the result
is almost constant from 0 to 100ma.

My conclusion is my test is wrong or small cheap
transfo are not so easy to saturate.
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Old 8th February 2009, 05:35 PM   #2
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Default Re: my saturation test ??

Quote:
Originally posted by jeapel
I would like to get your opinion on my saturation test.
My idea is the secondary inductance should drop
with DC on primary near to saturation but the result
is almost constant from 0 to 100ma.

My conclusion is my test is wrong or small cheap
transfo are not so easy to saturate.
Saturation is a function of the volts per turns ratio and signal frequency. Best way is to crank up the primary voltage with a Variac while monitoring the current. The current will increase abruptly when the core saturates. It will also hum noticeably when that happens.
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Old 8th February 2009, 06:54 PM   #3
jeapel is offline jeapel  Canada
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Join Date: Sep 2003
Location: quebec
thanks Miles
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