21 Aug
2006
21 Aug
'06
3:56 p.m.
On 8/21/2006 at 11:04 PM ard at p850ug1.demon.co.uk wrote:
I actually have a book of electrical things for boys to make which
suggests makine a sausage cooker that simply connects said sausages
across the (110V) mains. Hmmm....
I am trying to rememebr other ways of determining the polarity of a DC
supply. There was, of course, stuff called 'pole finding paper' but
nobody seems to sell it anymore. And the well-known earthworm on damp
blotting paper, but I can't rememebr whethter the head is +ve or -ve for
it to stretch...
-tony
Am I the only person here who is reminded of using
a slice of potato to
determine the polarity of a DC supply?
I vaguely remember that trick--AC was good for cooking weiners, as long as
you used carbon electrodes (to keep metals from contaminating the meat).