Building a Basic Square Wave Oscillator: A Beginner's Guide

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what said:
What you sketched there wouldn't work
Bugger, thought not.

what said:
Is the grinder AC ?
It is yes.

Thanks for taking an interest :wink:
 
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I lied I think. Sorry I've looked at it again and it looks like there's a commutator there so it's probably DC I would guess. Not too sure. I think it's best this topic gets retired now while I do some more work. I'll open a new topic when I've got a bit further that's more relevantly titled, thanks to everyone who contributed.