22 Aug
2006
22 Aug
'06
2:58 p.m.
On 8/21/2006 at 11:56 PM ard at p850ug1.demon.co.uk wrote:
Personally, I'd rather use a step-down _isolating_ trasnformer :-)
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 suspect that if one wanted to use 220v mains, one would hook two sausages
in series... I am trying to rememebr other ways of determining
the polarity of a DC
supply.
Salt (NaCl) on moist blue litmus paper will turn red around the v- pole.
I once knew a fellow who swore he could TASTE the difference when one lead
was touched to his tongue (the other being held between moist fingers). He
probably speaks with a permanent lisp now...
Yes, a friend at HPCC claims to be able to do that. We've never needed to
put it to the test, though (I have a Fluke DMM at the meetings...)
-tony