> Yup. And the circuit has been working fine UNTIL the short :-) Regulator
does
> have 0.1 uF caps against ripple. Supply pins are the right way around, and
> both VDD and VSS pins are connected.
>
> But, even though I understand the issues involved with the regulator etc,
I
> am wondering why it killed the PIC but not the other components. Even
though
> lots of current flows through the short, it shouldn't flow through the PIC
?
> What kills it?

Are there any capacitors to ground on PIC pins?  If so, these could have
dumped significant current into their pins if the PIC supply got suddenly
shorted.  That could kill the PIC.


********************************************************************
Olin Lathrop, embedded systems consultant in Littleton Massachusetts
(978) 742-9014, olin@embedinc.com, http://www.embedinc.com

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