Well for a start I'd make sure its one of the analogue type, some of the
switch mode ones might look nice but they do not seem to like motors being
run off of them.
Really you need to have some idea of the current drain to find one that
works, then its just finding one with the right output and current rating
with the plug round the right way. I was thinking along the lines of the old
Sinclair ZX81 supply.
do you know if it was regulated. Its sounds unlikely if it said 12 v and it
runs on 9.
Brian

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From the Sofa of Brian Gaff Reply address is active
"David B" wrote in message
...
Hello all,
I moved house the other day and somehow or other managed to loose/misplace
the power supply for my Pink Triangle PT1. I'm totally ignorant on all
things like this so what sort of power supply do I want?

They were designed to be run at 9V DC but my old supply was 12V.
It had a 3.5mm Jack plug.

That's all I know.

Thank you

David