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Old 30th January 2003, 06:53 PM   #1
Kermit is offline Kermit  Norway
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Default My Aleph3 pcb layout

Hi, I made a PCB layout for Aleph3.
Being a “pcb novice” I would appreciate any comments on it. The odd size of the board is due to size restriction. I plan to use 2x 0.22R 5w resistors at the output, and 2x 1R 1watt resistors as source resistors. Please let me know if you se any errors or possible improvements.
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Old 30th January 2003, 07:03 PM   #2
xsnailx is offline xsnailx  Poland
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nice board sez I

did you use eagle for layout?
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Old 30th January 2003, 07:08 PM   #3
Kermit is offline Kermit  Norway
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Yes, that’s Eagle. I tried various other pcb programs, but I have to say that Eagle is by far the easiest to learn and use.
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Old 30th January 2003, 07:13 PM   #4
xsnailx is offline xsnailx  Poland
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but here are some comments
r102 and c1o1 too close
r110 q104 - too close
r114 and cap - try to make it fit better by moving track up a little until the hole reaches a middle of track
q106 r116 holes too close
generally try to place holes more in the middle of tracks not on the border or corner of them
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Old 30th January 2003, 07:18 PM   #5
xsnailx is offline xsnailx  Poland
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iam using eagle too
iam working on aleph 5 so your pcb inspired me a lot!!
i have just finshed schematic and planning to do some routing tommorow
i have one question
could you post your eagle files?
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Old 31st January 2003, 06:49 PM   #6
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Could you post your Eagle pcb file on that PCB here? That would make it alot easier for all of us to have them made if need be.
Thanks!
Mark
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Old 31st January 2003, 07:27 PM   #7
xsnailx is offline xsnailx  Poland
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mark, did you mean my aleph 5?
or this posted pcb if you meant my aleph 5
it is a unfinished schematic only at this time i will post it when it will be ready
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Old 31st January 2003, 07:57 PM   #8
Kermit is offline Kermit  Norway
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Thanks for your comments xsnailx. I have tried moving some parts around as you commented. Attached you will find zipped schematic and pcb layout for eagle. It’s made with version 4.01 so I don’t know if it will work with the newest shareware version. If you run a erc check you will get a pin overlap warning on the diodes. I don’t know way this happens, but it always does when I use bzx55 diodes in the schematic.
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Old 31st January 2003, 08:31 PM   #9
xsnailx is offline xsnailx  Poland
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thank you very much
i will try them tommorow
and post some comments
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Old 31st January 2003, 08:34 PM   #10
xsnailx is offline xsnailx  Poland
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could not resist
they are working fine!!!!
but must wait until tommorow evening
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