RE: [TCML] HV resistor

["S&JY" <youngs@xxxxxxxxx>]

Jay,

You can make your own with a foot or two of vinyl tubing filled with water
(experiment with a mix of tap and distilled to get the value you need).
Just have a way to allow for expansion as the liquid gets warm.  I seem to
remember Jim Lux posted something about this years ago.  

Also, a string of dozens of resistors in series works very well, can handle
high power and voltage (distributed) and is inexpensive.  

--Steve Y.     

-----Original Message-----
From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On Behalf
Of Jim Lux
Sent: Friday, April 15, 2011 7:16 AM
To: Tesla Coil Mailing List
Subject: Re: [TCML] HV resistor

On 4/14/11 10:18 PM, jhowson4@xxxxxxxxxxx wrote:
> I am looking to acquire a 1-5 Mohm resistor for a college project,
preferably wire wound and of a higher power.
> (my three 1W 1meg carbon films in series are not cutting it, flash over
issues)
>
> contact me off list if you might have something available
>
> Thanks,
> John "Jay" Howson IV
> _

How much power?  How much voltage (a 1W is good for, maybe, 1000V, 
unless in oil)?  Watch the power dissipation too..
Wirewounds are not wonderful for HV (they have an interesting breakdown 
phenomenon if they get nicked) and the inductance can bite you.




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