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Old 14th May 2007, 08:15 PM   #1
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Default 60w Mosfet

need opinions about this circuit a 60W MosFet Audio Amplifier


Thanks in advance
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Old 14th May 2007, 09:27 PM   #2
AndrewT is offline AndrewT  Scotland
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In the original circuit, a three-diode string was wired in series to R10. Two of these diodes are now replaced by a red LED in order to achieve improved quiescent current stability over a larger temperature range. Thanks to David Edwards of LedeAudio for this suggestion.
I would be very wary of this change to the bias temperature compensation.
regards Andrew T.
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Old 14th May 2007, 09:37 PM   #3
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Why is that Andrew?
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Old 15th May 2007, 02:49 AM   #4
Leolabs is offline Leolabs  Malaysia
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Depends on what type of MOSFETs.
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Old 15th May 2007, 03:00 AM   #5
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That design is good for lateral mosfets only, but never attempt it with hexfets or verticals.
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