PCB check

[Rocketman]

Hi all,

I just finished a pcb design and was wondering if somebody could take a look and point to some errors. I have the original layout as well, but took the liberty of making few adjustments (both are not the best solution). Also the transistors Q7, Q8, Q9 and Q10 don't have markings for the values. Is it somehow possible to know what type they are and their values? Thanks.

 

[Brevor]

Maybe larger traces up around the fet's and the motor connections, a more direct connection from the filter cap to the motor connectors or maybe 2 filter caps, 1 near each connector. I would try to have a ground plane in this area, and also some ground plane separating the fets from the low power section of the circuit. The ground trace that runs under the 4 blue jumpers should be made a ground plane and extended up to where the fets connect to it, so you have short ground connections. I would add a jumper in the blue traces in case I later needed to add a small value resistor or ferrite bead in series with the gate.

 

[Ian Rogers]

Aren't PCB images usually reversed? Or does it printout in reverse.