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4th February 2006, 03:02 PM
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#1 |
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diyAudio Member
Join Date: Aug 2002
Location: Germany
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'fet as resistor' for cartridge loading?
Hi,
AoE deals with the possiblity to use a jfet as a resistor. As it is so simple, why not use it as a (programmable) load resistor? Or will the sound quality suffer? Rüdiger |
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4th February 2006, 03:08 PM
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#2 |
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diyAudio Member
Join Date: Dec 2005
Location: Kuala Lumpur
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Problems
1) calibration - the relationship between Vgs and Rds is very variable between samples and is temperature dependent 2) relatively noisy - Vgs noise becomes resistance variation 3) its another rf detector to pick up your gsm phone The linearity is probably good enough at MC output levels |
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