Hi All,
It's only my 2nd design for a PCB so be kind
did a proto pcb of the attached board and unfortunately it didn't work.
When I hooked up the transformer got hot (as did the secondary wires) so I am assuming its some sort of short somewhere but can't work out what I've done.
I'm not sure where I have gone wrong so any feedback would be appreciated. I'm sure it's something simple but I can't seem to see where!
The attached is a two layer (was meant to be a regulated power supply using an 1085) The 1085 is attached to the board via two screws and heat sink. The screw holes on no net and have a decent keep out around the screw holes from the pour.
The top layer is for power signal and the bottom is a ground plane. No power signal is routed in the bottom layer only ground connections. The traces are 1.6mm I was planning to run a max of around 1A through the board, but realistically it wouldn't see more than a few hundred ma. R5 is to fine tune the output voltage.
If anyone has any ideas what could be wrong I would appreciate the feedback, I suspect I've done something simple and stupid, but well I can't seem to find where.
Thanks heaps guys really appreciate any feedback great bunch of members here who have always been helpful. Thanks all