> must admit I believe most of my problems so far have come from the
> lack of a power supply capable of delivering 5V or ~13V "solidly".
> All I have are 4xRechargable AA (@4.8V) and a 12V "adjustable" power
> supply.  People keep mentioning "bench supply" but of the 2/3 I've
> seen they were very expensive! (any UK people suggest where they got
> theirs?)

        The problem is the PSU? No problem anymore:

        http://www.electronics-tutorials.com/basics/power-supp-variable.htm

        This is an excellent PSU for begginers, simple and C H E A P to
construct. This PSU can go from 1.2 to more than 30V in its output.
you can just eliminate the Voltimeter and Amperimeter if you don't
(or can't) spend this amount of money. It will give you something
more than 1Ampere, but If you change the LM317T for a LM317K (the TO-
3 version, looks like a 2N3055) you can have 5 Amperes. Of course,
according with the power of the transformer you put on the input of
this circuit.

        Feel free to ask on the list any questions :o)

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