Original poster: Terry Fritz <vardin@xxxxxxxxxxxxxxxxxxxxxxx> Hi JT,The output voltage probably varies by +- 20% as it runs. Here is how Marco measures top voltage:
http://www.elisanet.fi/dncmrc/wprobe/wprobe.pdf This is how I do it: http://hot-streamer.com/TeslaCoils/MyPapers/planant/waveant3.html There is a newer version here: http://hot-streamer.com/temp/PlaneWave.pdf You would also need one of these: http://www.home.agilent.com/USeng/nav/-536895104.536880348/pd.html They are far cheaper here: www.jameco.com Jameco P/N 132290 They go for like $10 on Ebay: http://search.ebay.com/high-voltage-probeThis last item might be real useful and your school might just have one already.
It's all sort of a messy business, but it is a load of fun if you want to get into it. I am not sure we can break better than 5% accuracy though...
Cheers,
Terry
At 10:25 PM 11/27/2005, you wrote:
I need an accuracy down just just one KV, thats all. Not too specific.I have access to a whole highschool electronics lab. There's literally more equipment in it than any member in this forum has. There's even an 18,000 dollar scope (low voltage though, darn)Please, tell me what I need, and I can PROBABLY borrow it for a day or two. I can get scopes, ohmmeters, ammeters, voltometers, multimeters, frequency probes, resistors, caps, and so on forever. Seriously, supplies(being borrowed, that is) isnt a problem.What do I need so I can MEASURE output voltage?From: "Tesla list" <tesla@xxxxxxxxxx> To: tesla@xxxxxxxxxx Subject: Re: Tesla coil output voltage Date: Sun, 27 Nov 2005 19:20:01 -0700 Original poster: Jim Lux <jimlux@xxxxxxxxxxxxx> At 05:30 PM 11/27/2005, you wrote:Original poster: "JT Bowles" <jasotb@xxxxxxxxxxx>you told me i am about 1/2 way there to a perfect coil, which isnt bad. Thanks.NOW TO BUSINESS. I "NEED" TO KNOW WHAT MY OUTPUT VOLTAGE IS FOR SEVERAL REASONS*bragging rights(yes...yes...I know)*Curiocity, and just need to know, if i am to ever describe its output accurately *coil is a joint effort by school and I ( though it is about 99.9999999% mine)*contractual obligation! ha!*lastly, i feel obligated to create the best coil possible with my resources. IF i discover my output voltage is low, well then, my coil isnt the best it can be, is it.18 Gazillion volts. Wow buddy, thats some rather serious power. 18 GAZILLION is enough to ruin your day! hahaOK.. what sort of accuracy do you require?if you actually need to measure the voltage, you've got a bit of a chore in front of you. What sort of measurement equipment do you have access to? A voltmeter? An oscilloscope? HV probe for the primary voltage?