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Old 30th October 2008, 02:34 PM   #1
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Default 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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Old 30th October 2008, 02:41 PM   #2
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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
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