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Old 16th September 2009, 04:18 PM   #61
AndrewT is offline AndrewT  Scotland
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black on black is not too good for legibility!
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Old 16th September 2009, 04:33 PM   #62
udailey is offline udailey  United States
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Try this link. I dont know why it pasted black in the background.
http://picasaweb.google.com/udailey/...03991465867298
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Old 17th September 2009, 05:45 AM   #63
cviller is offline cviller  Denmark
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Quote:
Originally Posted by Botte View Post
cviller,

How are you coming along on the Bias boards?

Thanks,
The bias boards are not all that exciting... I think I'll make them like the attached, but I want to make it easy to place on top of the output boards, so it might change a bit.
This board is currently 4x4 cm.
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Old 17th September 2009, 07:34 AM   #64
jormajj is offline jormajj  Finland
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Is it possible to overlay both TO92 and DIL8 layouts for the TL431 ?
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Old 17th September 2009, 11:30 AM   #65
flg is offline flg  United States
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Quote:
Originally Posted by udailey View Post
... Not sure how you would attach them to the plate but I suppose super glue on the sides of the TO-92 would do it.
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Arctic Silver makes a thermal epoxy substance
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Old 30th October 2009, 02:40 PM   #66
Botte is offline Botte  United States
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Hi,

Just Checking in on how the boards are coming along.

Thanks,
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Old 30th October 2009, 08:49 PM   #67
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I was thinking the same thing
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Old 30th October 2009, 09:09 PM   #68
cviller is offline cviller  Denmark
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Good thing you write - with BAF and all, the layout has not been my top priority.
The thing that is causing the delays is actually a problem of deciding how to incorporate the bias boards to the output stage - keeping it versatile but yet easy for people to get the thing assembled without too much headache...

The frontend stage is about done and I can clean it for production in no time.
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Old 3rd November 2009, 06:25 PM   #69
cviller is offline cviller  Denmark
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Default Finally some progress on the output and bias boards.

The bias board is 4.5x4.5 cm and output board is 24x4.5 cm.

The idea is that the bias board can be attached in either end of the output board and the mounting holes and connections are lined up so that the boards can overlap.

I would appreciate any comments or suggestions. Before fab I'll clean it up a bit and write some text on the boards to make the assembly easier.
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File Type: png output_3p_nb_ph.png (37.3 KB, 1053 views)
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Old 3rd November 2009, 07:03 PM   #70
Variac is offline Variac  United States
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The output boards are 3 complementary pairs, so if you wanted to do a Full Monty 6 pairs per channel BA-2 you would use 2 output boards per channel. Of course the actual BA-2 chassis' already have output boards, these are for people that don't have a chassis- or just need output boards for other projects....

Last edited by Variac; 3rd November 2009 at 07:06 PM.
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