Ground scheme

athos56 · 19th March 2007, 05:49 PM

Hello all

I'm building a Je labs St2a3dx and documenting my progress here, I went over my ground scheme on the last page, here. I would apreciate it if could get feedback on the ground layout.

Sorry about the links but I thought it would be a waste to repost all of the pictures here. Thanks for any assistance.

SY · 19th March 2007, 06:19 PM

I get a message saying that the images are not available.

athos56 · 19th March 2007, 06:46 PM

So the links work to the other site but the pictures don't work for you? Wierd, it works for me, but that doesn't mean anything.... Oh I bet you have to register... I'll try and link them.
One

Two

Three
http://audiokarma.org/forums/attachm...5&d=1174285842

Maybe those worked.

radtech · 19th March 2007, 06:48 PM

no, those don't work either, looks like you have to register and login to see the pics.

athos56 · 19th March 2007, 06:50 PM

How about this! One...

athos56 · 19th March 2007, 06:52 PM

Here we go

athos56 · 19th March 2007, 06:53 PM

I should have done this first! Sorry

Text...

First picture - center tap to the first 20uf cap, the cap is connected to the ground at the adjacent center ground lug, the 12 gauge copper wire bus starts there at the cap as well. The next connection is the center tap of the 6.3v, then the 200k resistor, the bus then makes a stop at each cap in order, 100uf, 50uf, 50uf.

Second Picture - Bus wire travels across the chassis and ends above the two 20uf/500v filter caps (big ones in the center)

Picture three - Each channel procceeds the same. Input jack to 100k resistor to 1k resistor to 22k cathode and 100uf bypass cap to the ground bus wire after the filter caps.

Input jack is isolated, ignore were it appears that each channels run through a ground lug in picture 3, only 2 ground points exist, one next to the 20uf cap at the power supply end and one next to the main power plug safety ground.

Please let me know if you see something which is gount to cause me problems. Thanks!

SY · 19th March 2007, 06:55 PM

I'm so gassed from the renderings that it may take me a while to suggest anything about grounding. That is very, very cool looking drawing. Is it software usable by ordinary mortals?

athos56 · 19th March 2007, 07:00 PM

Its called sketchup pro by google, trial version (free) when the trial runs out it still lets you use the basic features! And thanks!

SY · 19th March 2007, 07:05 PM

One more request: a schematic.

19th March 2007, 05:49 PM	#1
athos56 diyAudio Member Join Date: May 2006 Location: Yakima, Washington	Ground scheme Hello all I'm building a Je labs St2a3dx and documenting my progress here, I went over my ground scheme on the last page, here. I would apreciate it if could get feedback on the ground layout. Sorry about the links but I thought it would be a waste to repost all of the pictures here. Thanks for any assistance.

19th March 2007, 06:19 PM	#2
SY diyAudio Moderator Join Date: Oct 2002 Location: Austin, TX Blog Entries: 1	I get a message saying that the images are not available. __________________ “Listening to records is like ****ing a picture of Brigitte Bardot.” - Sergiu Celibidache

19th March 2007, 06:46 PM	#3
athos56 diyAudio Member Join Date: May 2006 Location: Yakima, Washington	hmm... So the links work to the other site but the pictures don't work for you? Wierd, it works for me, but that doesn't mean anything.... Oh I bet you have to register... I'll try and link them. One Two Three http://audiokarma.org/forums/attachm...5&d=1174285842 Maybe those worked.

19th March 2007, 06:55 PM	#8
SY diyAudio Moderator Join Date: Oct 2002 Location: Austin, TX Blog Entries: 1	I'm so gassed from the renderings that it may take me a while to suggest anything about grounding. That is very, very cool looking drawing. Is it software usable by ordinary mortals? __________________ “Listening to records is like ****ing a picture of Brigitte Bardot.” - Sergiu Celibidache

19th March 2007, 07:00 PM	#9
athos56 diyAudio Member Join Date: May 2006 Location: Yakima, Washington	Yeah Its called sketchup pro by google, trial version (free) when the trial runs out it still lets you use the basic features! And thanks!

19th March 2007, 06:48 PM	#4
radtech diyAudio Member Join Date: Dec 2006	no, those don't work either, looks like you have to register and login to see the pics.

19th March 2007, 07:05 PM	#10
SY diyAudio Moderator Join Date: Oct 2002 Location: Austin, TX Blog Entries: 1	One more request: a schematic. __________________ “Listening to records is like ****ing a picture of Brigitte Bardot.” - Sergiu Celibidache

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