you've nailed it Nigel, that is exactly what i want to be doing, it is just coming up with a circuit that is on the market or indeed deigning something that can do this for me.... Any idea's there? I am willing to contribute towards costs etc, I would do it but simply do not have the experience necessary.
I do not believe the field is editable, but indeed I do not really know, what you were looking at in the last picture is basically it, there is that and the magnets on the outside, that's about as technical as this generator gets...