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Old 8th December 2010, 07:18 PM   #591
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Originally Posted by ma_coule View Post
Congrats regi, very impressive work!

One suggestion & one question...
Please, add. wide washer under the mfet screw, even better nice little heatsink...
Were did you find that power-in connectors?

Peter, sorry for OT!

& for fun!
Are you referring to the IEC input or the 'Idontknowhowtosayinenglish' things for holding and screwing wiring terminals?

Best regards,
Regi
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Old 8th December 2010, 07:35 PM   #592
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Originally Posted by regiregi22 View Post
Are you referring to the IEC input or the 'Idontknowhowtosayinenglish' things for holding and screwing wiring terminals?

Best regards,
Regi
Sorry, it was just a friendly compliment, suggestion and question...
BR,
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Old 8th December 2010, 07:37 PM   #593
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I think there has been a misunderstanding here. I was referring to your question about the power input connectors
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Old 8th December 2010, 07:37 PM   #594
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Originally Posted by regiregi22 View Post
Have you made PSU boards too??
Yes, PS pcbs as described here: Universal Power Supply PCB are available as well.
Attached Images
File Type: jpg PS.jpg (163.0 KB, 480 views)
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Old 8th December 2010, 07:55 PM   #595
AndrewT is offline AndrewT  Scotland
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Originally Posted by regiregi22 View Post
I have read that higher bias sounds better (Nelson sez it), ................ I bet higher current in colder conditions achieve better sound, due to transient peaks staying in ClassA?
Borbely, who also deals exclusively in FET actives, also says that output bias must be >=500mA to get the best out of mosFET output stages.
As to why it sounds better? Your tentative conclusion could be correct.
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Old 10th December 2010, 03:20 AM   #596
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Just got my boards, they look great. Thanks!
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Old 11th December 2010, 01:34 PM   #597
JBdV is offline JBdV  Netherlands
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@Peter: do your F5 boards comply with the original schematic? (So current protection etcetera are left to the builder to implement or not?)

Where can I find a correct Bom for the F5?

Jan
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Old 12th December 2010, 12:21 AM   #598
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Yes, the boards comply with the original circuit schematic, the protection can be fully implemented, if required.

The boards come with a schematic and you can source the parts based on that. There were few BOM files circulating around, but I'm presently away from my computer and don't have access to those, can provide them later though.
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Old 12th December 2010, 01:19 AM   #599
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So the inside thru hole is the pos and the outside thru hole is the neg!
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Old 12th December 2010, 11:09 AM   #600
h_a is offline h_a  Europe
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I don't want to spam the thread, just a little heads-up for those that could need a little help sourcing the transistors for the F5:

F5 transistors kits

Have fun and enjoy the marvelous F5!
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