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Re: Discharge impedance of a CW Tesla coil
Hi Terry,
This is very interesting stuff.
Did you build the RF power generator, or are you using a linear amp or
something from work ? Is its output sinusoidal or is it a square wave ?
I take it that you are driving the resonator via a primary coil rather
than feeding the base ?
Sorry for all the questions, but solid state coiling has always been an
interest for me. I am a power electronics engineer by profession and see
the potential of using a power inverter for a small solid state TC.
Did you try modulating the RF feed ? I found that the discharge becomes
more like a dissruptive TC if the RF is modulated with a narrow pulse
waveform. More bolts and less of a brush effect. The buzzing and ozone
return of course, but the average power drawn can be slashed greatly.
There is a paper by Dr. Gary L Johnson called "Input Impedance of a Tesla
Coil" which covers a similar series of tests to what you describe. I
trust you have already seen this, but could scan it for you if you
haven't. It would be interesting to see if your findings agree with his.
He used a half bridfe MOSFET inverter to end feed the resonator.
Please keep us informed of developments,
Cheers,
-Richie,
> Original Poster: Terry Fritz <twftesla-at-uswest-dot-net>
>
> Hi All,
>
> I have been playing with my patched together RF generator and measurement
> equipment. Today I took off work early to do something important. ;-)) I
> was able to measure the impedance of the brush discharge of my coil run
> from the generator in CW (continuous wave) mode.
>
> snip <