Re: Voltagee measurement

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

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

Hi Kamil,

Using the chart at:

http://hot-streamer-dot-com/TeslaCoils/Misc/SGapVolt.jpg

Probably around 17.5kV.

Cheers,

	Terry


At 02:26 AM 9/27/2001 +0200, you wrote:
>Hi !
>
>I have a trouble with a transformer. I don't know it's parameters, so I want 
>to measure voltage 
>of the transformer (i think 5 to 20 kV). How can I do this?
>I found that spark apears between the electrodes connected to the 
>transformer when the gap is about 15mm (between sharp nails) and about 6mm 
>gap is required when electrotes are two spheres (no sharp edges).
>I know that breakdown in air is about 30V per 0.025mm, but which distance 
>schould I use for accountings (6mm or 15mm)? 
>I also noticed that when nails aore little wider than 15mm on the top of one 
>of them appears corona. (sparks striking to the air in the direction of the 
>other nail). There is no corona when I use spheres separated with more than 
>6mm of air.
>Could you tell me something about the output voltage of my transformer 
>having this data?
>Thanks for all answers.
>
>Kamil Kompa
>