Honey I blew up the mini lathe speed control board

[HankMcSpank]

Hi Irving,

Thanks for the offer - there's some relatively hard to source electronics bits & bobs stuff I've been waiting to get from Cricklewood...so I might as well bite the bullet & get ordering from them & lob in a couple of 78l08s too - they've no minimum order, but £3 P&P (not bad & saves me having to drive over there!)

Thanks for the basic outline diagram too.

Re getting my finger too close to the 'big wiggly amps' - yep, lots of high voltages on this board, but not overly worried (originally trained in fixing valve based radar kit by the RAF many moons ago...I've had -500V DC across me a few times while stooping in a darkened ops room fixing radar consoles ...enough to be careful nowadays!)

[irving2008]

mmmm been there, done that... 12kV radar output stages

worse IMHO is the 48v, 500A primary busbar in certain large aircraft, or the 50v similarly rated one in telephone exchanges... wont kill you with volts, but will melt your watchstrap through your wrist if you are stupid enough to wear one and let it short the busbar (seen it done)