> What have I done wrong?

Failed to read the archive :-)

RA4 is open drain - it needs a pullup resistor if you want to see it go high
/ source current.
It's this way so it can be pulled to high voltage (12 volts) during
programming.

Also useful for the brave for a 2 component step up inverter - inductor to
Vcc, diode to output supply (add a zener to output unless load GUARANTEES
that max allowed voltage will not be exceeded).
Never actually heard of anyone doing this but some must. Roman ??? :-)


        RM

--
http://www.piclist.com hint: The list server can filter out subtopics
(like ads or off topics) for you. See http://www.piclist.com/#topics