Re: Spark Gap VI Scope Capture

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

Original poster: "Terry Fritz" <teslalist-at-qwest-dot-net>

Hi,

I have now determined that the voltage offset is an artifact of the P6015 
probe's compensation.  With oil in the probe, I can't get it 
"perfect".  Trying to see such a large dynamic range really makes the 
problem hard to control.  I'll see if I can figure something out.

So the voltage should be centered around zero volts in those graphs.

Cheers,

         Terry


At 12:37 PM 5/21/2003 +0100, you wrote:
>At 18:29 20/05/03 -0600, you wrote:
>>Original poster: "Terry Fritz" <teslalist-at-qwest-dot-net>
>>
>>
>>I pulled out the "fabulous" Jennings vacuum capacitor divider HV probe 
>>and go this:
>>
>>http://hot-streamer-dot-com/temp/2003-05-20-03.jpg
>>
>>http://hot-streamer-dot-com/temp/2003-05-20-04.jpg
>>
>>http://hot-streamer-dot-com/temp/2003-05-20-05.CSV
>>
>>A ton of odd noise now (not sure what is "true"...)  But look how 
>>straight the average voltage level is!!!
>>
>>So I pulled out the Terry's plane wave antenna and pointed it the the 
>>probe top:
>>
>>http://hot-streamer-dot-com/temp/2003-05-20-06.jpg
>>
>>http://hot-streamer-dot-com/temp/2003-05-20-06.jpg
>>
>>http://hot-streamer-dot-com/temp/2003-05-20-08.CSV
>>
>>Still NOT seeing that average voltage dip...
>
>Surely this is no surprise given that the capacitor divider probe and 
>plane wave antenna are both AC coupled devices and won't pass the 
>low-frequency component? Maybe the voltage dip is a real phenomenon?
>
>Steve C.
>