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Old 28th January 2012, 04:14 PM   #651
EUVL is offline EUVL  Europe
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A further update.

The revised protection board has been fully tested, including thermal tests, without issues.
I'll let Alexis give you the details himself.

Give it a few more days, and we'll let you know about GB for the PCBs.
Component GB you need to organise yourselves, I am afraid.

Schematics and BoM of the protection will follow tomorrow (from me).


Patrick
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Old 28th January 2012, 04:30 PM   #652
ashaw is offline ashaw  Australia
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Thanks patrick, Yes it all works as expected, here are some photos to do you guys over until the BOM and schematics are published tomorrow.

I look forward to posting details on a component GB soon if people are interested, also those who have already paid for a component kit, PM me, and I will arrange shipping with you.

Thankyou everyone for this amazing opportunity to serve this amazing community.

------
Alexis
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File Type: jpg IMG_0140[1].jpg (567.5 KB, 801 views)
File Type: jpg IMG_0138[1].jpg (716.6 KB, 770 views)
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Old 28th January 2012, 05:38 PM   #653
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Quote:
Originally Posted by EUVL View Post
I do not recall publishing a regulator using 2SJ201 ??

But in any case, you can pretty much use any MOSFET in those positions.
Only two factors need to be consider :

1. The Vgs at operating current will determine the minimum voltage drop.
2. The transconductance will determine the output impedance.


Patrick
I was speaking of the F5x using 2sj201 and its counterpart.
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Old 29th January 2012, 12:24 AM   #654
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We will have some fun in soldering that little chips

D.
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Old 29th January 2012, 03:59 AM   #655
ashaw is offline ashaw  Australia
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Compared to what I am used to. Not that little. There is only one actually hard to solder part on this board. And that too is relatively easy.

Regards
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Old 29th January 2012, 05:29 AM   #656
reytnz is offline reytnz  New Zealand
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i'll PASS , that's beyond my soldering skills
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Old 29th January 2012, 05:42 AM   #657
EUVL is offline EUVL  Europe
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A few years from now, you would have no choice.
The industry will not produce through hole components for hobbists.
And the entire industry, even for prototyping, will move to SMD, because production cost is less.


Patrick
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Old 29th January 2012, 05:44 AM   #658
qusp is offline qusp  Australia
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not the sot-143? or the soic14? guys you really just gotta give this a go, its really not hard with the proper tools, at least everything here has leads. ashaw, will you be releasing one of these types of boards for the DIYA store version? sorry if youve covered this already. i remember we talked about this some time ago, but not sure how that progressed

its not just production savings, performance is more often than not superior as well

Last edited by qusp; 29th January 2012 at 05:49 AM.
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Old 29th January 2012, 06:51 AM   #659
EUVL is offline EUVL  Europe
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This board is tailored for the F5X case and as such is considered not universal enough by the forum. For them serving 30 case subscribers is not interesting and too much effort, so the protection board will only be available through us in a GB, primarily for case subscribers. We of course welcome all, but there will be a "normal" version later on in the year for general use. Also please bear in mind that these are Beta boards, and there might be a very small change of error or imperfections. So the first GB will receive subsidised prices. The protection board will only be available from us, not from DIYA.

Also just to clarify things, while we thank Alexis wholeheartedly for his excellent work on the board, like many others from this volunteer team that does the F5X work, including John, Greg, Fred, Heinz1, ..... they are NOT part of XEN Audio, and their involvements are limited to the F5X project only. Other than MarkLai & I, all team members of XEN will remain anonymous.

The schematics of the protection board belongs to us (XEN Audio), the layout to Alexis, who has also done all the testing. After the Beta testing, we shall discuss with him to purchase the right of the layout from him also, in which case we have 100% ownership.

Hope this is all clear.


Patrick
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Old 29th January 2012, 09:52 AM   #660
EUVL is offline EUVL  Europe
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As promised the schematics of the protection & control PCB.
All credits to Alexis.


Patrick
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File Type: pdf F5X Protection Board Schematics.pdf (132.5 KB, 305 views)
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