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My F4 Guide

Posted 11th February 2010 at 05:36 AM by cviller
Updated 2nd November 2012 at 08:11 AM by cviller

This is a guide to building a F4 using my boards, but you may be able to find some useful information here even if you use other boards.

The boards are based on the schematics from Nelson Pass's FirstWatt F4. You can get the service/user manual here: First Watt: Products: F4

You might want to check out the GB thread here: http://www.diyaudio.com/forums/group...gb-f4-pcb.html

PCB
Here is a picture of the pcb.
Click image for larger version

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Errata
There is a trace error around R22. I have cut the traces on most of the boards I have sent - and the rest of the batch will be cut before I send them out.

These are the cuts which needs to be made:
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And the green lines indicate where a connection must be made:
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This can be done simply by having the leg of R22 go through the hole and to the side.

Schematics...
Attached Files
File Type: pdf F4R0.pdf (87.7 KB, 1388 views)
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GB F5 Guide (pcb version 2)

Posted 3rd February 2010 at 01:17 AM by cviller
Updated 14th February 2013 at 07:14 PM by cviller

As promised, I would make a guide to the boards and in particular to the additions I have made to the F5. I decided to do this in the blog, because then you can give me comments which I can use for improving the doc. However I'm not done at all, but I thought it would be nice to give you access to the BOM I have made.

IMPORTANT: Before you start stuffing your boards, you must read the manual/article written by Nelson Pass available for download on the First Watt website (First Watt: Products: F5).

Detailed guide by Steve and Matt: http://www.diyaudio.com/forums/pass-...mentation.html

PCB
Here is a picture of the pcb.
Click image for larger version

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ID:	99
There are no more boards available, but you can order F5 boards on the diyAudio store.


Schematics
Click image for larger version

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Optionality
With the addition of optional extra output mosfets and cascoding, there are...
Attached Thumbnails
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ID:	151  
Attached Files
File Type: pdf bom.pdf (50.9 KB, 4938 views)
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