Schematic 500w

fjromero · 24th March 2007, 05:46 PM

Hello friends, here I leave east scheme you, to see that it seems to you.

Greetings

danville · 24th March 2007, 06:09 PM

The very first thing I would do is replace the emitter resistors in your diff pairs with current sources.

The diode in your mirror is good but a transistor would be better.

CBS240 · 25th March 2007, 01:59 AM

How is the common mode operation? Is the voltage source feeding the differentials and mirror regulated? I would lower the -rail to the differentials a little more and cascode the second differential(VAS). Or even both of them

Oh yeah, if those rails are not regulated, I would add CCS's and fix that mirror as danville suggested. Or use a Wilson, cascode or swap mirror.

24th March 2007, 05:46 PM	#1
fjromero diyAudio Member Join Date: Oct 2006	Schematic 500w Hello friends, here I leave east scheme you, to see that it seems to you. Greetings

25th March 2007, 01:59 AM	#3
CBS240 diyAudio Member Join Date: Aug 2005 Location: K-town	How is the common mode operation? Is the voltage source feeding the differentials and mirror regulated? I would lower the -rail to the differentials a little more and cascode the second differential(VAS). Or even both of them Oh yeah, if those rails are not regulated, I would add CCS's and fix that mirror as danville suggested. Or use a Wilson, cascode or swap mirror. __________________ All the trouble I've ever been in started out as fun......

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24th March 2007, 06:09 PM	#2
danville diyAudio Member Join Date: Jun 2004 Location: Minnesota	The very first thing I would do is replace the emitter resistors in your diff pairs with current sources. The diode in your mirror is good but a transistor would be better.

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