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23rd September 2010, 05:48 AM
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#1 |
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diyAudio Member
Join Date: Aug 2003
Location: Santa Cruz, California
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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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23rd September 2010, 06:08 AM
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#2 |
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diyAudio Moderator
Join Date: Sep 2007
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It is worth a read
 All Dougs books and articles should be required reading for anyone interested in the subject.
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------------------------------------------------------- A simulation free zone. Design it, build it, test it. |
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23rd September 2010, 07:12 AM
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#3 |
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diyAudio Member
Join Date: Sep 2007
Location: Hangzhou - Marco Polo's 'most beautiful city'. 700yrs is a long time though...
Blog Entries: 62
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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.
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When a measure becomes a target, it ceases to be a good measure. C.A.E. Goodhart |
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23rd September 2010, 10:27 AM
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#4 |
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diyAudio Member
Join Date: Nov 2003
Location: Amsterdam
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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 Cheers, E.
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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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23rd September 2010, 11:20 AM
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#5 |
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diyAudio Member
Join Date: Jan 2004
Location: n.e england
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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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23rd September 2010, 02:44 PM
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#6 |
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diyAudio Member
Join Date: Aug 2006
Location: Taipei, Taiwan
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Yes.
Last edited by Bonsai; 23rd September 2010 at 02:46 PM. |
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23rd September 2010, 06:33 PM
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#7 |
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diyAudio Member
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Would be nice to have these in .pdf format.
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