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30th October 2008, 02:34 PM
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#1 |
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diyAudio Member
Join Date: Jul 2008
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FET Parameters - Matching
If one uses beta to match bipolar transistors, what parameters are useful to match FETs. In particular I'm looking to match the Q1,2,3,4 for the input stage of a Hafler 9180 amp. What parameters? What percentages? ?? FYI devices are 2SK163 and 2SJ74
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30th October 2008, 02:41 PM
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#2 |
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diyAudio Member
Join Date: Sep 2006
Location: Graz, Austria
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Match VGS at identical currents, that will do. If you want to improve that, use fets from the same batch.
Have fun, Hannes
__________________
fresh matched IRFP240/IRFP9240 fets  || AlephJ/JX-kitsF5 transistor kits || Burning Amp BA-1/2/3 transistor kits |
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