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Old 29th December 2009, 10:36 AM   #21
godfrey is offline godfrey  South Africa
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Seems to me there's a nice option with Allison-biased Mosfets.

If you you drive the Allison at the emitters and use bootstrapped current sources, then you can get close to rail-to-rail output voltage swing because the gates can be driven beyond the supply rail voltages.
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Old 29th December 2009, 10:52 AM   #22
godfrey is offline godfrey  South Africa
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To get close to rail-to-rail output swing in class B, one could perhaps use something like this?
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Old 29th December 2009, 05:31 PM   #23
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All this depends of what Sig wants.

Quote:
In your Allison thread, the image in the first post won't expand , so it's hard to see what's going on.
I attached a zip file holding the schematic and files for that experiment at the bottom, if you can use LTSpice. I'll look for the image.

- keantoken

Last edited by keantoken; 29th December 2009 at 05:42 PM.
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