Re: Van de Graaff /Pelletron (fwd)

[Steven Roys <sroys@xxxxxxxx>]

---------- Forwarded message ----------
Date: Mon, 19 Jan 2004 09:16:56 -0500
From: dave pierson <davep@xxxxxxxx>
To: High Voltage list <hvlist@xxxxxxxxxx>
Subject: Re: Van de Graaff /Pelletron (fwd)


>>From: dave pierson <davep@xxxxxxxx>
>>
>>
>>>and isn't the maximum output voltage for a given length limited by
>>>breakdown between the pellets?
>>>
>>>
>>     Sort of.
>>
>>    There is no voltage difference between the pellets,
>>    as such, that is (thought experiment):
>>
>>        IF the belt were removed, there would be no difference.
>>
>>
>
>Don't mix charge with voltage. The pellets along the chain have all
>the same charge, but their potentials are evidently different,
>because the capacitances between the pellets and the "ground"
>decrease as they go up. The voltages vary from a low value at the
>bottom to the terminal potential at the top (or even higher after
>they enter the terminal). Exactly as in a belt.
>
    ...whichis what i said...

    best
     dwp