Mike,

Yes the Clark Zapper basically switches on and off rapidly. OK.

I battled to see the Beck unit the way you do. 
Just to clear things up, I am thinking about the Beck unit which has a 2 pole
change over relay output. I don't have a built unit right now but from memory
the 'scope shows a nice square wave of 0, +27, -27, +27 etc. ie 54 volts p-p. So
we agree there. :)  And that is as far as my conjecture went. I would like to do
some observations and measurements, before putting my foot in it anymore. I
think our problem has to do with the actual time constant of the body vs the
changeover frequency.

"M. G. Devour" wrote:
> 
> Tony wrote:
> > The Clark Zapper delivers a 9volt, unipolar, high frequency signal ...
> >
> > The Beck unit delivers 27volts, bipolar, (effectively 54 volts, ie
> > +27v to -27v =54v)
> 
> I've got no problem with anything else you're saying, Tony, but this
> raised a question...
> 
> The Clark unit basically switches the output on and off at the pulse
> rate. The Beck unit is "always on" but the polarity switches at the
> pulse rate, correct?
> 
> I don't see 54 volts coming out of it, except as a transient,
> perhaps, at the beginning of each half-cycle, when the body's
> charged up capacitance is in series with the now reversed voltage.
> 
> The waveform I'm visualizing, if you attach one paddle to the
> oscilloscope ground and the other to a channel input, is a 54v peak
> to peak square wave, yes.

Yes.

> 
> If you reference your signal to, say, an electrode on the person's
> body midway between the electrodes, I would expect to see a 27 volt
> p-p square wave, with perhaps a higher voltage spike at the leading
> edge of each half cycle. Or perhaps use a dual channel scope and view
> A-B with ground attached to the person's toe!
> 
> Can you straighten me out, please?
> 
> Mike D.
> 
> [Mike Devour, Citizen, Patriot, Libertarian]
> [[email protected]                        ]
> [Speaking only for myself...               ]
> 
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