My Aleph3 pcb layout

Kermit · 30th January 2003, 06:53 PM

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.

xsnailx · 30th January 2003, 07:03 PM

nice board sez I

did you use eagle for layout?

Kermit · 30th January 2003, 07:08 PM

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.

xsnailx · 30th January 2003, 07:13 PM

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

xsnailx · 30th January 2003, 07:18 PM

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?

Mark A. Gulbrandsen · 31st January 2003, 06:49 PM

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

xsnailx · 31st January 2003, 07:27 PM

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

Kermit · 31st January 2003, 07:57 PM

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.

xsnailx · 31st January 2003, 08:31 PM

thank you very much
i will try them tommorow
and post some comments

xsnailx · 31st January 2003, 08:34 PM

could not resist
they are working fine!!!!
but must wait until tommorow evening

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30th January 2003, 07:03 PM	#2
xsnailx diyAudio Member Join Date: Dec 2002 Location: Poland, Cieszyn	nice board sez I did you use eagle for layout?

30th January 2003, 07:08 PM	#3
Kermit diyAudio Member Join Date: Jun 2002 Location: Oslo - Norway	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.

30th January 2003, 07:13 PM	#4
xsnailx diyAudio Member Join Date: Dec 2002 Location: Poland, Cieszyn	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

30th January 2003, 07:18 PM	#5
xsnailx diyAudio Member Join Date: Dec 2002 Location: Poland, Cieszyn	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?

31st January 2003, 06:49 PM	#6
Mark A. Gulbrandsen diyAudio Member Join Date: Sep 2001 Location: Salt Lake City	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

31st January 2003, 07:27 PM	#7
xsnailx diyAudio Member Join Date: Dec 2002 Location: Poland, Cieszyn	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

31st January 2003, 08:31 PM	#9
xsnailx diyAudio Member Join Date: Dec 2002 Location: Poland, Cieszyn	thank you very much i will try them tommorow and post some comments

31st January 2003, 08:34 PM	#10
xsnailx diyAudio Member Join Date: Dec 2002 Location: Poland, Cieszyn	could not resist they are working fine!!!! but must wait until tommorow evening