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Old 16th Apr 2019, 9:35 am   #8
Radio Wrangler
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Join Date: Mar 2012
Location: Fife, Scotland, UK.
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Default Re: Replacement power transistors hfe.

At a guess, in a power supply of that vintage and with a TO-3 output device, a Darlington arrangement is likely, but not certain.

Some supplies were well-designed, others were bodge-ups. We have to see the circuit to tell.

David
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