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#1 |
diyAudio Member
Join Date: Mar 2008
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From "High Performance Audio Power Amplifiers"
Written by Ben Duncan. Published by Newnes - An imprint of Butterworth-Heinemann Ltd Linacre House, Jordan Hill, Oxford OX2 8DP. See attached jpg. When came the original publications or schematics by Borbely and by Lender ? Can we access the original texts ? Are there DIY amplifiers available nowadays using such topology ? What are the results ? I have no interest in Lin, Blameless or Circlotron. Please don't try selling me these in this present thread ;-) Steph |
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#2 |
diyAudio Member
Join Date: Oct 2010
Location: Burlington, NC
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Check out A75 article at Passdiy.
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#3 |
diyAudio Member
Join Date: Mar 2008
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Radio Plans n°403
True Symmetry Buffered Darlington output June 1981 |
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#4 |
diyAudio Member
Join Date: Mar 2008
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Radio Plans n°434
True Symmetry Vertical MOSFETs output January 1984 |
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#5 |
diyAudio Member
Join Date: Mar 2008
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You mean this all MOS implementation dating back from 1992 (Audio Amateur) ?
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#6 |
diyAudio Member
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The thread, solid solid state power amplifier, by PMA might be of some interest.
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#7 |
diyAudio Member
Join Date: Mar 2008
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More about Erno Borbely
http://www.linearaudio.nl/interviews...nalsMMM508.pdf This is a "must read". Next exercice is to analyze the Hafler DH200 schematic. Then, analyze the Millennium power amp schematic. |
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#8 |
diyAudio Member
Join Date: Nov 2009
Location: algeria/france
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1977 CC2 Audionics , whose schematic was taken from a manufacturer
app note.(was it Fairchild.?)... This the 1979 version. |
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#9 |
diyAudio Member
Join Date: Mar 2008
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Hafler DH-200
Designed by Erno Borbely 1978 see attached .jpg |
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#10 |
diyAudio Member
Join Date: Nov 2009
Location: algeria/france
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Another ancestor, that might well be the first such design
is the Motorola design published in REL 12/1973. Notice the output stage topology. Last edited by wahab; 17th August 2011 at 12:44 PM. |
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