Re: Variation of secondary Q

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

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

Hi Paul,

Tonight I hooked up a 2.5kV spark gap and high voltage supply to pulsed the
coil.  I got good strong readings from both the antenna and a current
transformer.

Here are the scope waveforms:

http://hot-streamer-dot-com/temp/Qvar/3-19.gif

The yellow voltage trace looks as before but much more powerful even with
the antenna about 5 feet away.

The current waveform (blue) does not have the high pass filter effect and I
bet it has far less external noise.

The following data sets are all in a zip file:

http://hot-streamer-dot-com/temp/Qvar/Data3-19.zip

The voltage data is here too:

http://hot-streamer-dot-com/temp/Qvar/3-19v.CSV

The current data:

http://hot-streamer-dot-com/temp/Qvar/3-19i.CSV

Here is the current data with a 50 ohm termination on the cable:

http://hot-streamer-dot-com/temp/Qvar/3-19i1.CSV

The same signal (50 ohm termination) with the ground floating:

http://hot-streamer-dot-com/temp/Qvar/3-19i2.CSV

If you like one of these signal type the best, let me know.

I notice the LabCam locked up as I was turning up the HV supply...  Long
cabled computer stuff just does not like Tesla coils ;O))

BTW - I am getting the RS-232 thing for the scope.  To much fun to pass up
there :-))  Once I get that going, we should be in business!

Cheers,

	Terry