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Current design of amplifier VAS

OldMercuryTube

Apr 2, 2022
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Apr 2, 2022
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I am confused as to how to calculate the VAS current source output required to feed the output transistors. Do you start by assuming power out at the 8ohm speaker load to get the output current and then divide this by the beta of the output transistors to get the current required by the VAS current source? Or is it more complicated than this?
 

WHONOES

May 20, 2017
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May 20, 2017
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Depends on whether you are planning to use bjt's or fets for the output stage.
 
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