27 Apr
2011
27 Apr
'11
10:39 p.m.
On 27 Apr 2011 at 22:11, David Griffith wrote:
"salt water dimmer" seems to be the more
common term according to
Google. The term "piss pot" shows up too. Sadly, I can't seem to find
any pictures of these devices.
Try looking for "liquid rheostat" or "water rheostat". They're
still
used for starting large motors and have power ratings of 300KW to 1MW
as far as I can tell.
I've got a plating manual from the 1990s that describes using a water
rheostat to regulate plating current.
If you think about it, they make a lot of sense--you can use a pump
to move the liquid around for cooling, instead of using a liqud to
transfer heat from a solid resistance element.
--Chuck