SansAmp Classic PCB

[gak]

well guys, i'm just working on a new sansamp classic pcb... a couple of months ago a version with a LOT of wiring was posted... so i'm trying to simplify it... i'm mounting the DIP switch and the pots on the main PCB so a lot of wires are gone... right now i've already designed the main pcb... tomorrow i'm gonna make the buffer pcb... anyway i'd like someone to check my layout before posting it... any volunteers?

thanks!
see ya!

gak.

[sir_modulus]

I'll give it the best looking over I can!

Cheers,

Nish

[gak]

well this is my first attemp...

the pcb is 80.65 x 45.09 mms
parts off pcb are still off pcb, so they may be connected as shown on the schematic (http://www.diystompboxes.com/cgi-bin/webbbs_scripts/webbbs_config.pl?read=302)...
the pad marked as "Fx Out" is actually where pot Vr3 should be connected
each opamp ic must be powered wiring to VCC and GND
BIAS2 pads on right and left side of the pcb must be wired together
i still need work out components spacing and such, but i think is pretty acceptable... so i need to know if there aren't serious mistakes
i hope you guys can helpme debuggin it!

cheers!

[sir_modulus]

I'll give it look for one, but I may take a while to do so, I've got a busy week planned.

Cheers,

Nish

[gak]

i've just found a major mistake on that PCB... i'v inverted the pinout of the right halft of the TL074 
so here is a new one: (i know it's a mess, but hey! i'm new doing this things...)


anyway, debugging it doesn't seem to be very interesting for anyone but sir_modulus so i think i'm gonna give it a try this weekend and see how it works...

cheers!

gak.

[sir_modulus]

I actually just finished checking it and that's all I could find. All in all, I think it's a pretty darn good layout! (and a much needed one)

Cheers,

Nish

[gak]

well, here is the final version (i hope..)


gak.

[cd]

What schematic are you working off of?  This one?

[gak]

yes, that's the schematic but i've just realised that one doesn't have the parts numbered
actually de file i was looking at was posted by bill bergman (with a pcb layout of his own) here: http://www.diystompboxes.com/smfforum/index.php?topic=36179.20

anyway, here are the parts values:
R1 10k
R2 1M
R3 10k
R4 100k
R5 130k
R6 100k
R7 100k
R8 1M
R9 22k
R10 220k
R11 100k
R12 100k
R13 22k
R14 22k
R15 22k
R16 22k
R19 10k
R20 1k
R21 33k
R22 33k
R24 1M
R25 100
R26 100k
R27 100k
R28 10k
R29 10k
R30 100k
R31 1M
R32 10k
R33 100k
R34 100k
R35 1k
R36 1M
R37 100k

C1 .047uF
C2 2.2uF
C3 47uF
C4 220uF
C5 .047uF
C6 470pF
C7 .0022uF
C8 .0022uF
C9 .0022uF
C10 68pF
C11 .0015uF
C12 .0027uF
C13 .0015uF
C14 .0015uF
C15 680pF
C16 .0022uF
C17 2.2uF
C18 unknow (try 4n7 to 10n)
C19 unknow (47p to 220p)
C20 .0022uF
C21 .01uF
C22 .022uF
C23 unknow (4n7)
C24 .0047uF
C25 100pF
C26 39pF

Z1 1N755 7v5 400mW
Z2 1N755 7v5 400mW
D1 1N4148

FET 2SK117

IC1 TL072
IC2 TL074

[neto.50]

Sorry for reactivating your old post, but I'm curious...
Did you finish your layout?
Did it work fine?

Would you mind sending it to my e-mail?
neto.50@gmail.com

Thank you very much!