On Mon, 23 Aug 2010 16:23:46 -0700, "Artemus" wrote:


"Gunner Asch" wrote in message
.. .
On Mon, 23 Aug 2010 15:12:47 -0700, Tim Wescott
wrote:

snip

http://cgi.ebay.com/Resistor-power-r...-/150467109756

It really doesnt need to be 200 watts on a home machine. Even 100 watts
will work fine.

All you got to do is take your ohm meter..tweak it the slider to the
proper ohms rating for your vfd..and hook up some wires.


Be careful when using a slider to set the ohms. You'll need to derate
the wattage proportional to the setting. ie 50% of the ohms is 50% of
the wattage. http://www.ohmite.com/catalog/210_series.html
The other thing is the reliability of the slider connection is
much lower than the reliability of a fixed resistor.
Art

True indeed. Which is why you use a power resistor as close to your
needed ohms as possible. You get the maximum value of the heat handling
of the resistor.
Fixed 200 watt resistors are a bit harder to find and a bit more
expensive, though Im seeing them on Ebay much cheaper these days.

Gunner


I am the Sword of my Family
and the Shield of my Nation.
If sent, I will crush everything you have built,
burn everything you love,
and kill every one of you.
(Hebrew quote)