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Old 9th October 2013, 02:34 AM   #11
sjhomey is offline sjhomey  United States
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Join Date: May 2010
Location: southern New Jersey
Thanks 6L6
The more I think about it and after reading about all the fakes around, I think maybe I will stick with the Vishays. I know I can get them from reputable dealers. I am starting to wonder about the 2SK170/2SJ74 I have. Do you know of reputable dealers selling them? I see FETAudio mentioned as a good source. Do you know of others? Thanks again.
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Old 9th October 2013, 03:25 AM   #12
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The diyAudio Store will be stocking limited numbers of the Linear System's LSK170/LSJ74.
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Old 8th November 2013, 04:28 PM   #13
diyAudio Member
Join Date: Apr 2008
Location: Qax
Hi folks!
Maybe it's a dummy question but I found slight difference between two F5 amplifiers schematics. At least it should be 4.2V on left image. Also there are two capacitors on PCB board. Which one is correct one or better one?

And which PCB board do you prefer for this amp. I'm trying to make a short cut.
Click the image to open in full size.

Last edited by Insanoff; 8th November 2013 at 04:52 PM.
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Old 11th August 2015, 06:23 AM   #14
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Join Date: Jun 2013
Could anyone provide the F5 V3.0 BOM?(2013-11-21 cviller layout)
Especially the "R35" on the PCB board.
Thanks a lot.
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Old 22nd December 2015, 02:24 PM   #15
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Join Date: Mar 2007
Do not try to use the RURG8060 for Class A power supply. I almost finnished my F5 Turbo V 3. Tried with a vario. The vario got hot and never more then ca, 0,8 vdc came to capacitors. They was oscillating no doubt.

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