Please critique my Class A amplifier!!

AudioGeek · 28th July 2004, 04:14 PM

Here is an attached schematic of my upcoming amp.

Please feel free to give suggestions and hints.

Thanks!!!!

AudioGeek · 28th July 2004, 04:35 PM

Brain fart!!!

What would happen if I substituted a choke/inductor for R6??

Thanks!!!!

eLarson · 28th July 2004, 08:02 PM

For R6? You'd get a steeper slope than if you had just used the resistor. (12 db/octave instead of 6.) You'd want to take into account the internal resistance of the inductor and possibly keep a resistor in there, too, to keep any resulting resonance damped down.

Take a look at Nelson Pass's Zen Version 7 over at passdiy.com. The project involves a choke load on a single-stage MOSFET amp, similar in concept to your output stage.

eL

28th July 2004, 04:35 PM	#2
AudioGeek diyAudio Member Join Date: Jan 2004 Location: Minnesota	choke substitution???? Brain fart!!! What would happen if I substituted a choke/inductor for R6?? Thanks!!!!

28th July 2004, 08:02 PM	#3
eLarson diyAudio Member Join Date: Aug 2002 Location: Gaithersburg, MD	For R6? You'd get a steeper slope than if you had just used the resistor. (12 db/octave instead of 6.) You'd want to take into account the internal resistance of the inductor and possibly keep a resistor in there, too, to keep any resulting resonance damped down. Take a look at Nelson Pass's Zen Version 7 over at passdiy.com. The project involves a choke load on a single-stage MOSFET amp, similar in concept to your output stage. eL __________________ Would a woodchuck bother to chuck MDF?

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