Re: 10K 100 watt Rheostat

To: tesla-at-pupman-dot-com
Subject: Re: 10K 100 watt Rheostat
From: "Jeff W. Parisse" <jparisse-at-teslacoil-dot-com> (by way of Terry Fritz <twf-at-verinet-dot-com>)
Date: Sat, 20 Feb 1999 15:44:25 -0700
Approved: twf-at-verinet-dot-com

Dave,

When I was building my tube coil (two 250TH tubes),
I got a bunch of mixed value 50W fixed resistors and used
them in pairs until I found the optimal grid current.

Looking back, it would have been nice to have a 
variable 100W to quicken the experimentation time.

To save money, try finding the resistance value with a lower
wattage variable resistor (before you burn it out) and replace
it with a fixed, higher wattage resistor when done.

And yes, John Freau is a tremendous guy and was a lot of
help to me too.

>   As the subject suggests, I'm looking for a 10K, 100 watt rheostat or
>variable resistor. But again, we run into  the availability problem.
>Most new rheostats seem to run about $25.00 for a 50 watt unit. I'm
>prepared to pay that amount, but  you guys understand the desire to
>economize.

>   Finally, I should publicly thank John Freau for his considerable help
>with this project.
>Dave Hartwick