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robb robb is offline
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Default critique SMT pcb ? (Added --- Schematic and PCB)


"John Popelish" wrote in message
. ..
robb wrote
This is the my 1st SMT pcb etching project board.
Is there anything horribly wrong with the layout of the
components and/or traces ?


The IC looks like a quad opamp. I would put its bypass
capacitor as close to the chip as possible. It appears that
C1 and C2 in series perform this function. I think I would
bring the trance to pin 11 up under the chip and put C1 and
C2 closer to it.

I am also concerned that it looks like you have loaded the
output of one of the opamps directly with capacitors, which
tends to make them oscillate. And one opamp looks dangling.
Usually a bad idea. Maybe we should look at the
schematic, also.

Why are R9 through 12 arranges as they are
Regards,John Popelish


Thanks for the reply and help John.

I have made some modifications and i have added a schematic image
along with the pcb,

R9 athrough R12 are supposed to be a resistor ?bridge? so i
oriented then that way ?
thanks again,
robb


Attached Thumbnails
critique SMT pcb ?-esr_proj_pcb_final_1-jpg  critique SMT pcb ?-esr_proj_sch_final-gif