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Schematic 500w
Schematic 500w
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Old 24th March 2007, 05:46 PM   #1
fjromero is offline fjromero  Spain
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Default Schematic 500w

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


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Old 24th March 2007, 06:09 PM   #2
danville is offline danville  United States
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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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Old 25th March 2007, 01:59 AM   #3
CBS240 is offline CBS240  United States
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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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