Thank you JonesBeene. The thought that the mass of the device may change under certain conditions had not crossed my mind. Can you refer me to some good papers on the Shawyer truncated cone?
Yes, I am familiar with Bird Wattmeters. However, in this experimental setup, nothing is matched to a 50 ohm impedance, so I think it may be simpler and more straightforward to simply measure the Drain current I_d. Imagine a simple Class A NMOS amplifier, with n LC circuit between the Drain and the positive rail. In my experiment, the hyperbolic horn structure serves in place of the resonant circuit. The current flows down the central pipe in the middle. The current varies in magnitude, but never reverses direction. Therefore, the magnetic field varies in magnitude, and gives rise to wave phenomena, but does not reverse direction. Therefore, the hysteresis curve stays in the upper right-hand quadrant. I think of it like stirring a bucket of water. If you stir only clockwise and do not reverse direction, you will begin to create a vortex. The surface of the water will dip down and form a funnel, shaped like a hyperbolic horn. On Mon, Aug 24, 2020 at 6:15 AM JonesBeene <jone...@pacbell.net> wrote: > Very interesting. > > > > The first thought that came to mind when I saw your design, esp with the > golden rule geometry -- is that it could be a more favorable wave guide > than the Shawyer truncated cone (EM drive) for the purpose of directed > thrust using RF. > > > > Mabye this is where your are headed but if you haven’t done so (and have a > very sensitive digital scale), it could be worth the effort looking for any > such small effect. NASA would love to see such a finding as they have taken > some heat, so to speak, over their EM drive testing. > > > > As for power measurement, there is lots of used Bird RF meters and dummy > loads out there (EBay) – but it looks like you have already tried that. > > > > Jones > > > > *From: *Sean Logan <paco66...@gmail.com> > > > > I built, and am experimenting with an EM resonator. Its geometry is > based on the shape of a hyperbolic horn, the natural shape of a vortex in > water. Please let me know if you have any insight into what is happening > inside this structure, when it is excited with RF. > > > > My work is documented here: > > > > spaz.org/~magi > > > > > > Also, if you know of a simple circuit for measuring RF current, I am > all ears. I would like to look for the "dip" in current which occurs when > it is excited at its resonant frequency. > > > > Thank you, > > Sean Logan > > > > >
