From: firstname.lastname@example.org (Jorge Omar)
Subject: Re: 'Current Dumping' Amplifier Circuits ?
Date: 3 Dec 2002 08:13:10 -0800
NNTP-Posting-Date: 3 Dec 2002 16:13:11 GMT
Circuits of Quad amps:
From the 405 on, they are current dumping.
Jim Thompson wrote in message news:...
> On 2 Dec 2002 03:06:28 -0800,
> email@example.com (Jorge Omar),
> In Newsgroup: sci.electronics.design,
> Article: ,
> Entitled: "Re: 'Current Dumping' Amplifier Circuits ?",
> Wrote the following:
> |1 - it works.
> |2 - it's a Maxwell bridge, and you have to balance all the arms of it
> |to be really effective;
> |3 - Patents have expired, and AFAIK no other manufacturer has used it,
> |so maybe it is not so advantageous;
> |4 - I feel QUAD's implementation is not really optimized (too little
> |power in the class A stage, bridge underbalanced);
> |6 - It still needs lots of NFB;
> |5 - Never built one - just did Spice simms.
> |"HG" wrote in message news:<firstname.lastname@example.org>...
> |> Any comments on the pro's and con's of 'Current Dumping' circuits (designed
> |> by Peter Walker & (I think) Mike Albinson), as used in most Quad power
> |> amplifiers since the 405?
> |> TIA.
> I'm having trouble visualizing this circuit. (Must have been before
> my time ;-)
> Does anyone have schematics or a URL?
> ...Jim Thompson
> | James E.Thompson, P.E. | mens |
> | Analog Innovations, Inc. | et |
> | Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
> | Phoenix, Arizona Voice:(480)460-2350 | |
> | Jim-T@analog_innovations.com Fax:(480)460-2142 | Brass Rat |
> | http://www.analog-innovations.com | 1962 |
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