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Pearl input voltage difference
Pearl input voltage difference
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Old 4th April 2003, 08:35 PM   #1
Zappa is offline Zappa
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Join Date: Jul 2002
Location: Québec
Angry Pearl input voltage difference

One question about the Pearl Phono project : what the hell is the difference of source voltages for the input FETs (Q8 - 11) means??? Are these voltages randomly choosed around a nominal value to simulate differences in Vgs or what??? Not very clearly explained in the original article...


p.s. aaaarg! I'm unable to post the .jpg of the Pearl input section I have on my HD!?!
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Old 6th April 2003, 08:15 PM   #2
DavidMM is offline DavidMM
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Join Date: May 2002
Location: Boston, MA
I believe these are the voltages that were actually measured at the source. If you matched all the FETS, then these voltages should all be basically equal. I am not sure how closely they need to be matched.

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