High Power, High Fidelity Lateral MOSFET Power Amplifier

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pre65
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High Power, High Fidelity Lateral MOSFET Power Amplifier

Post by pre65 » Mon Nov 17, 2014 2:44 pm

I have been made aware of this amplifier (on another forum) and wondered if there were any comments about it ?

http://sound.westhost.com/project101.htm
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Colin Wonfor
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Re: High Power, High Fidelity Lateral MOSFET Power Amplifier

Post by Colin Wonfor » Mon Jul 27, 2015 6:33 pm

A Nice simple circuit, are the FET's still available?
That site is very good for lots of stuff.
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Mike H
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Re: High Power, High Fidelity Lateral MOSFET Power Amplifier

Post by Mike H » Tue Jul 28, 2015 9:12 pm

I like the current mirror Q5 & Q6. Feel however a smidgeon of emitter resistors are required to compensate for unequal device matching, unless Q5 & Q6 are on a chip. (?)

I have often seen this kind of current mirror in IC schematics.
 
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jack
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Re: High Power, High Fidelity Lateral MOSFET Power Amplifier

Post by jack » Thu Jul 30, 2015 4:45 pm

The current mirror is pretty common in SS high-end amps - Doug Self uses a similar scheme in his "Blameless" series of designs...
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