[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: homemade hv probe



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

Hi Frank,

The setup you describe sounds like more of a capacitor rather than a
transformer or current transformer.  You really don't have a magnetic "core" to
couple the primary and secondary.

Perhaps a far simpler setup is to just put a three foot wire "antenna" on you
scope probe and pick up the intense fields off the coil from a distance.  That
will easily give you many of the important signals.  You may also want to check
out the following:

http://hot-streamer-dot-com/TeslaCoils/MyPapers/modact/modact.html
http://hot-streamer-dot-com/TeslaCoils/MyPapers/rlcfilter/rlcfilter.html
http://hot-streamer-dot-com/TeslaCoils/MyPapers/planant/waveant3.html
http://hot-streamer-dot-com/TeslaCoils/Misc/Project_color.pdf

I have been using Pearson current monitors recently which work extremely well. 
But they are hard to find used and the new prices are stunning...

What you made sounds much like a current transformer, but you need a big load
resistor on it other wise the voltage on you PVC coil could get super high. 
Hard to tell without actually seeing the situation...

Hope this helps...

Cheers,

        Terry

At 11:15 AM 8/3/2001 -0400, you wrote: 


>
>       Hi all 
>
>             Ok i needed a way to see the voltage spikes im my tank system   
> so i wraped about 250 turns of 28 awg wire around a pvc pipe and hooked it up
>
> to my osiliscope  and ran one hv cable threw the pvc pipe.  It works but the 
> only problem is that i dont know that the ratio would be like i was running 
> 2000 volts on my first test and it ran great can anyone maybe help me figure 
> out how much my little cheap probe like thing will bring the voltage down so 
> that i am able to measure the voltage in the hv part through the volvolatge 
> part?