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-   -   Bootstrapped Op Amp (http://www.diyaudio.com/forums/solid-state/101829-bootstrapped-op-amp.html)

davidallancole 13th May 2007 08:22 AM

Bootstrapped Op Amp
 
Has anybody read this?

http://www.edn.com/contents/images/45890.pdf

It seems like a good idea.

jaycee 13th May 2007 09:55 AM

It does indeed.

I'm wondering if this would be good for an opamp-frontend power amp. I might have a play with the idea in LTSPICE :)

rtarbell 14th May 2007 02:05 AM

Great article!

As a side note, for more information on bootstrapping opamps, look on the web for these terms:

suspended supply opamp


I think it's the same or similar concept that was illustred in the article.

Leolabs 14th May 2007 03:34 AM

Add a decent current amplifier will produce a good quality power amplifier.

Symon 14th May 2007 10:03 AM

This has already be done, by Audio Analogue.

This link contains schematics for a few versions of the Puccini amplifier which is based on boot strapped Op amp.

http://www.pi.infn.it/~federico/unofficial.htm

Nordic 14th May 2007 01:12 PM

I am trying to get my head around it...

It has extra voltage swing, at the cost of reduced current output?

So one would need an output stage after it?


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