Re: TC Part alternates

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <Mddeming-at-aol-dot-com>

In a message dated 12/18/02 7:09:49 PM Eastern Standard Time, 
tesla-at-pupman-dot-com writes:


>Allelectronics has the caps but the closest resistor I could find there is:
>400 ohm/50 watt ceramic
>I could put 3 in an series to get 1200 ohms but what happens to the watts?


Your composite resistor will be able to dissipate 150 Watts.

>I also read I should use 10M ohm 1/4 watt 2000 volt bleed resistors for the
>Geek Group caps, but isn't the 1/4 watt a problem?
>Isn't there a lot more than 1/4 of a watt going through them?

        The power supplied TO the SYSTEM is not the power being dissipated 
(used up) BY each RESISTOR. The power being dissipated by the resistor is 
E^2/R, where R is the resistance and E is the voltage drop across each 
resistor.For say, 2000V drop across each cap, a pair of these in series 
would each dissipate 1000^2/ (10^7 )=0.1 watts. Now 2000v across a single 
10M resistor  would dissipate 0.4 watts, in which case a 1/2 watt resistor 
would be a better choice.
        This points out why some modicum of understanding of electrical 
theory is preferred before completing a coil.

Matt D.