XPost: sci.math, sci.physics.relativity   
   From: jl@glen--canyon.com   
      
   On Fri, 20 Feb 2026 08:48:26 -0800, Ross Finlayson   
    wrote:   
      
   >On 08/30/2025 03:52 AM, Ross Finlayson wrote:   
   >> On 08/27/2025 10:30 PM, Ross Finlayson wrote:   
   >>> On 08/26/2025 12:09 AM, Ross Finlayson wrote:   
   >>>> On 08/23/2025 12:13 PM, Ross Finlayson wrote:   
   >>>>> On 08/18/2025 06:32 PM, Ross Finlayson wrote:   
   >>>>>> On 08/15/2025 08:46 PM, Ross Finlayson wrote:   
   >>>>>>> On 08/15/2025 08:31 PM, Ross Finlayson wrote:   
   >>>>>>>> On 08/12/2025 07:21 PM, Ross Finlayson wrote:   
   >>>>>>>>> On 08/09/2025 09:29 AM, Ross Finlayson wrote:   
   >>>>>>>>>> On 08/09/2025 08:11 AM, Ross Finlayson wrote:   
   >>>>>>>>>>> Designing a new electrical component   
   >>>>>>>>>>>   
   >>>>>>>>>>> So I'm looking at implementing a DC to AC inverter, then it seems   
   >>>>>>>>>>> the   
   >>>>>>>>>>> only way to get an analog sine wave is to use mechanically a   
   >>>>>>>>>>> rotary   
   >>>>>>>>>>> AC generator, vis-a-vis switching and various ideas of function   
   >>>>>>>>>>> generators and integrators in circuits.   
   >>>>>>>>>>>   
   >>>>>>>>>>> So what I wanted was a field effect that basically implements   
   >>>>>>>>>>> a rotary action without moving parts, or a solid-state   
   >>>>>>>>>>> implementation,   
   >>>>>>>>>>> with the idea that less moving parts is less maintenance.   
   >>>>>>>>>>>   
   >>>>>>>>>>> What I'm looking at is something like a plasma effect   
   >>>>>>>>>>> thyrototron,   
   >>>>>>>>>>> after looking at thyratrons how they employ plasma ("a fourth   
   >>>>>>>>>>> state of matter") as a conductor for high-current or high-power   
   >>>>>>>>>>> application in power electronics, and, mostly for the analog   
   >>>>>>>>>>> implementation, a sort of rototron, what by whatever means   
   >>>>>>>>>>> contacts switches in a circle, thus for example to modulate a   
   >>>>>>>>>>> variac or AC autotransformer variac, so that it results that   
   >>>>>>>>>>> plain DC current of the high voltage sort arcs from cathode   
   >>>>>>>>>>> within a ring magnet to make a plasma vortex that moves   
   >>>>>>>>>>> circularly, then that basically influencing a layer of radially   
   >>>>>>>>>>> segment dielectric, to make a semiconductor effect, if of the   
   >>>>>>>>>>> gross or plainly analog, in power electronics.   
   >>>>>>>>>>>   
   >>>>>>>>>>> The idea is that the rotating single plasma arc spins around   
   >>>>>>>>>>> in a circle, actuating switches in a circle, that continuously   
   >>>>>>>>>>> modulate the variac, so that a plain square wave thusly has   
   >>>>>>>>>>> resulting a continuously varying and periodic waveform of   
   >>>>>>>>>>> alternating current, with no "moving parts" per se yet having   
   >>>>>>>>>>> the same principle of operation as a turning axle to generate   
   >>>>>>>>>>> a smooth sine wave alternating output from plain direct current,   
   >>>>>>>>>>> without much at all any voltage regulation required to get a sort   
   >>>>>>>>>>> of very simple operation of a DC to AC inverter.   
   >>>>>>>>>>>   
   >>>>>>>>>>> With the idea being   
   >>>>>>>>>>>    high-efficiency   
   >>>>>>>>>>>    high-fidelity   
   >>>>>>>>>>>    high-power   
   >>>>>>>>>>>    long-life   
   >>>>>>>>>>>    low-maintenance   
   >>>>>>>>>>>    simply assembled from available parts and materials   
   >>>>>>>>>>>    low-cost   
   >>>>>>>>>>> then what I'm figuring is that if the arc's anode's dielectric   
   >>>>>>>>>>> grooves basically are not destructive of the dielectric, then   
   >>>>>>>>>>> something like that basically would be a solid-stage analog   
   >>>>>>>>>>> DC to AC inverter with the above properties. Then, such a   
   >>>>>>>>>>> thing is with very simple components or readily available   
   >>>>>>>>>>> components like toroidal windings, and some dielectric paint,   
   >>>>>>>>>>> and permanent ceramic ring magnets, as what implement   
   >>>>>>>>>>> variacs today, yet employing this thyrototron and all its   
   >>>>>>>>>>> well-understood principles of operation, the features of   
   >>>>>>>>>>> plasma effects, to implement smooth since wave output   
   >>>>>>>>>>> an integrator and function generator.   
   >>>>>>>>>>>   
   >>>>>>>>>>> Then, the mathematics of this sort of thing are a bit   
   >>>>>>>>>>> under-defined,   
   >>>>>>>>>>> as with regards to Faraday law, and, Maxwell law, and about the   
   >>>>>>>>>>> Kirchhoof and Ohm in active and passive components, or the usual   
   >>>>>>>>>>> theory of the principles of electrical and electronic circuits,   
   >>>>>>>>>>> though,   
   >>>>>>>>>>> I figure not to care how fast the arc goes around in a circle as   
   >>>>>>>>>>> long   
   >>>>>>>>>>> as it does so in more or less a regular and uniform manner.   
   >>>>>>>>>>>   
   >>>>>>>>>>> So, I wonder a bit about the theory the mathematics to describe   
   >>>>>>>>>>> as what basically is the frequency of the rotation in the plasma   
   >>>>>>>>>>> vortex   
   >>>>>>>>>>> then though that I don't very much care what it is, then for   
   >>>>>>>>>>> figuring   
   >>>>>>>>>>> out the arc voltage which things neon signs already do, then the   
   >>>>>>>>>>> dielectric properties for a semi-conductor effect and continuous   
   >>>>>>>>>>> and   
   >>>>>>>>>>> smooth switching, as with regards to mating that to a variac coil   
   >>>>>>>>>>> and   
   >>>>>>>>>>> resulting continuously varying AC output voltage from a square   
   >>>>>>>>>>> wave,   
   >>>>>>>>>>> to then result via some capacitor banks an integrator and a sort   
   >>>>>>>>>>> of clean AC power output.   
   >>>>>>>>>>>   
   >>>>>>>>>>>   
   >>>>>>>>>>   
   >>>>>>>>>> According to Google Gemini, ....   
   >>>>>>>>>>   
   >>>>>>>>>>   
   >>>>>>>>>>   
   >>>>>>>>>> Hi Ross, your concept for a solid-state DC-to-AC inverter using a   
   >>>>>>>>>> rotating plasma arc is an interesting and creative idea.   
   >>>>>>>>>> However, it   
   >>>>>>>>>> presents significant practical and theoretical challenges. While   
   >>>>>>>>>> the   
   >>>>>>>>>> notion of using a plasma vortex to mechanically simulate a   
   >>>>>>>>>> rotating   
   >>>>>>>>>> generator is inventive, it's not a straightforward or currently   
   >>>>>>>>>> viable   
   >>>>>>>>>> path for several reasons.   
   >>>>>>>>>>   
   >>>>>>>>>> 1. The Core Idea: A "Rototron"   
   >>>>>>>>>>   
   >>>>>>>>>> Your idea proposes a device, which you call a "rototron," that   
   >>>>>>>>>> uses a   
   >>>>>>>>>> rotating plasma arc to act as a solid-state switch. The plasma arc   
   >>>>>>>>>> would   
   >>>>>>>>>> spin in a circle, sequentially activating different sections of a   
   >>>>>>>>>> transformer (like a variac). This would modulate a DC voltage   
   >>>>>>>>>> into a   
   >>>>>>>>>> continuously varying AC output, simulating the smooth sine wave   
   >>>>>>>>>> of a   
   >>>>>>>>>> mechanical generator. The goal is to achieve high-efficiency,   
   >>>>>>>>>> high-fidelity, and high-power output without moving parts.   
   >>>>>>>>>>   
   >>>>>>>>>> 2. Theoretical and Practical Challenges   
   >>>>>>>>>>   
   >>>>>>>>>> The "rototron" concept faces several fundamental hurdles, both in   
   >>>>>>>>>> physics and engineering.   
   >>>>>>>>>>   
   >>>>>>>>>> Controlling the Plasma Arc's Rotation:   
   >>>>>>>>>>   
      
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