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Old 23rd September 2010, 06:48 AM   #1
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Default Doug Self article in EETimes

He's focusing on power supply to solid-state amplifiers, and how to reject supply interference by proper amplifier design. Worth a read.

Audio amplifier power supply design - Part 3: Power-supply rail rejection
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Old 23rd September 2010, 07:08 AM   #2
Mooly is offline Mooly  United Kingdom
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It is worth a read
All Dougs books and articles should be required reading for anyone interested in the subject.
Installing and using LTspice. From beginner to advanced.
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Old 23rd September 2010, 08:12 AM   #3
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Parts 1 and 2 are excellent value too though I'm not totally in agreement with Doug's view that switch mode power supplies are undesirable for audio amps, and necessarily more expensive than unregulated linear supplies.
Most people take the limits of their vision to be the limits of the world. - Schopenhauer
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Old 23rd September 2010, 11:27 AM   #4
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Default improving PSRR

This material has already been published in EW+WW, March 1995. So, old wine in a new bottle. Besides, he doesn't even mention the most obvious and simple trick: a small cap, equal to Cdom, between the current mirror input and gnd. See also:
Bob Cordell Interview: BJT vs. MOSFET
and here if TMC or TPC has been applied: Bob Cordell Interview: Negative Feedback

Een volk dat voor tirannen zwicht, zal meer dan lijf en
goed verliezen dan dooft het licht…(H.M. van Randwijk)
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Old 23rd September 2010, 12:20 PM   #5
jez is offline jez  United Kingdom
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IMHO whilst Self's articles are very good and generally well researched he is guilty of propagating a "there is only ONE correct way of implementing any piece of circuitry and that's Doug Self's way" attitude.
In spite of this I am still very grateful to Self for those areas in which he has increased understanding for many people, including myself Even if I don't always agree with his viewpoint on matters such as Mosfets...
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Old 23rd September 2010, 03:44 PM   #6
Bonsai is offline Bonsai  England
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Amplifier Design and Construction for MUSIC!

Last edited by Bonsai; 23rd September 2010 at 03:46 PM.
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Old 23rd September 2010, 07:33 PM   #7
PB2 is offline PB2  United States
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Would be nice to have these in .pdf format.
Pete Basel
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