>heck you can even use a jar of salt water
>with 2 electrodes in it at a pinch -- electrolysis is a problem if you
>use it for any length of time on DC, but it will act as a power resistor
>for long enough to test a PSU)
I did that for extra credit once in a theater lighting class. I built a
Salt Water dimmer system. Worked real nice for a little while, then the
water turned piss yellow, and it stopped conducting at all. But I got the
extra points to make up for the classes I missed.
I built it using a 9 volt battery, the little square ones used in toys, a
baby food jar, metal cut from a can of peaches, and some scrap wood,
wires, and light bulb pulled from a toy truck... same truck the battery
came from. It was a fun evening project.
-chris
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Received on Sun Jun 09 2002 - 19:55:40 BST