thx rj
I've just wired it up though exactly like the diagram, plugged it in and nothing is happening :?
is it definitely right?
any ideas?
here's a pic
excuse the shitty soldering
Click to view attachmentedit: I think I found the problem, i assume that piece of metal underneath that looks like a hair clip is supposed to touch the outer ring? cos i noticed it wasnt so pushed it against it with a piece of plastic (trying to be careful not to electrocute myself

) and it works.... i guess it had been bent away from the coils.... hmm