My Aleph3 pcb layout

[Kermit]

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]

nice board sez I

did you use eagle for layout?

 

[Kermit]

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]

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]

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]

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]

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]

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]

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

 

[xsnailx]

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

 

[colin.hepburn2]

Request for Aleph3 PCB overlays & parts list

Hi Kermit
I have been looking at some of the threads on the aleph3 amp. But |just gets a little confusing. I am requesting some help by asking you if you would kindly let me have a copy of the PCB overlay And Parts List.
I would be most gratefully to you
Thanks
Regards
Colin

 

[xsnailx]

i can convert eagle files to pdf for you if you want just drop me email

 

[xsnailx]

here is pdf in zip file for everyone
Board is designed by kermit not mine
What i have done is just converted it to pdf format
any comments are welcome🙂

 

[xsnailx]

here is the board

 

[xsnailx]

here is components overlay

 

[xsnailx]

here is bill of materials

 

[nickgreek]

Hi guys!

I am working on a Aleph 3 here is my prototype
Please let me know if you se any errors

 

[xsnailx]

make board bigger little bit
e$22 e$23 too close solpad and trace to small
e$35 e$36 the same
es33 es 15, es13 es4 solpad too close to the edge
😉

 

[xsnailx]

here is a smal corection to my previous postings i forgot the board sizes

 

[Kermit]

Thanks for picking up the tread xsnailx, I haven’t been around for a wile. Just a word of caution with the bill of materials. For the layout I used different irf’s and bc’s and changed their values (they weren’t in the lib). So were it says Value: IRFP240 Device: IRFC040, it is in fact IRFP240.
By the way the boards are almost finished now, I just need to pick up some irf’s and I should be up and running. Case is coming (slowly) along too.