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Old 13th August 2011, 11:31 AM   #2511
jacco vermeulen is offline jacco vermeulen  Netherlands
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Good suggestion, but you have to admit that Mr Gerhard's random approach is interesting to those who think phono stage all day.
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Old 13th August 2011, 12:08 PM   #2512
Joachim Gerhard is offline Joachim Gerhard  Germany
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Jacco, are you the one that makes Mosfet AB amps ? (:
Kamis, some time ago i published a circuit that is an amalgam of all i learned here.
I think i called it the MPP2011 and Jan Didden made an offer to lay it out. Unfortunately there was no reaction from the forum. I will go back on the tread and find it. Then i will publish it again. It was with a Fet input stage. I will publish another stage with BJTs at the input so we have two official circuits. I think that is enough. Both circuit can be build AIOG
or with a two stage approach so we have our 4 circuits. Is that a good idea ? I will begin with one circuit first.
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Old 13th August 2011, 12:21 PM   #2513
jacco vermeulen is offline jacco vermeulen  Netherlands
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Quote:
Originally Posted by Joachim Gerhard View Post
the one that makes Mosfet AB amps
Never ! :-(

=> Commercial Product
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File Type: jpg AVM2.jpg (140.3 KB, 286 views)
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Old 13th August 2011, 12:27 PM   #2514
Joachim Gerhard is offline Joachim Gerhard  Germany
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I know Günther. His power amps are good.
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Old 13th August 2011, 12:52 PM   #2515
Joachim Gerhard is offline Joachim Gerhard  Germany
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Here is the Fet version of the official MPP2011 Fet AIOG. It contains more or less all that i think is good and right. I will work out the details over the next few days. Who will make a PCB ? Should i do a PSU or should we ask somebody else.
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File Type: pdf MPP Summer 2011 FET AIOG official concept.pdf (40.9 KB, 137 views)
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Old 13th August 2011, 01:01 PM   #2516
lauret is offline lauret  Netherlands
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All the transistor annotations appeared on the second page of the pdf document on my pc. Does anybody else have that too?
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Old 13th August 2011, 01:13 PM   #2517
Benedetto is offline Benedetto  Germany
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@Lauret;
sadly-Yes
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Old 13th August 2011, 01:52 PM   #2518
Joachim Gerhard is offline Joachim Gerhard  Germany
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Yes, i am hiding it.
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Old 13th August 2011, 01:54 PM   #2519
Joachim Gerhard is offline Joachim Gerhard  Germany
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I that better ?
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Old 13th August 2011, 02:00 PM   #2520
Joachim Gerhard is offline Joachim Gerhard  Germany
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Here is the BJT version.
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File Type: pdf MPP Summer 2011 BJT official concept.pdf (39.0 KB, 109 views)
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