Re: [EVGRAY] Re: Neutral spike

Body

Ole,

Pretty sure Al Hubbards device worked the same way as Paul Browns NuCell.

http://www.rexresearch.com/nucell/nucell.htm

On 11/16/2018 5:47 PM, [email protected] [EVGRAY] wrote:
>  
>
> H Sven,
>
> "I have now wrapped all power lines with aluminum foil and this
> one-sided grounded."
> Just be careful how the grounds are connected. Here are some EMC
> tutorial articles: http://learnemc.com/emc-tutorials
>
> The current paths may still induce currents into other circuit parts
> when the current carrying wires form loops having enough area (i.e.
> one turn coils). Shielding that way doesn't help for magnetic fields.
> The signal wires would probably improve if screened cable was used.
> But it all depends on how the wires are rigged up to avoid loops
> transmitting and receiving magnetic fields (magnetic coupling).
>
> "...the high-power mosfets are very hot although they are used at most
> 10%. The cut-off voltage at the drain increases in the kilovolt range
> when the transverter is connected"
> What do you mean by 'used at most 10%?' When getting hot they may need
> more cooling or they are used at their maximum power dissipation.
> Remember the power dissipation given in the datasheet is normally when
> the surface of the device is held at 20 degree Celsius which is only
> possible when using water cooling or heavy forced air cooling like
> pressurized air flow. If the drain-source voltage is reaching the
> avalanche breakdown voltage of the MOSFETs this will dissipate a lot
> of heat in them. Also switching high voltages at high current gives
> great switching loss if the switching transitions take too long.
> During switching transitions the MOSFETs are working in the linear
> region which means both voltage across and current through them at the
> same time. This dissipates heat as voltage times current gives power
> [V x A = W]. Multiply this by the transition time to get energy
> dissipation [W x s = J]. Look at the gate source signal as this
> controls the drain source channel.
>
> Have you found out how to make free energy or is it still just
> reactive power?
>
> I have made some simple experiments along the way of Pierre Cotnoir's
> device. I may have simplified it too much as I used a bunch of small
> transformers instead of a motor stator as in Pierre's device. No
> excess power output was observed. My next experiment is along the way
> of the Clemente Figuera patents
> (http://alpoma.net/tecob/?page_id=8258). He may actually mix the
> fields the right way for coherence to occur. This could also be the
> way Alfred Hubbard's device worked.
>
> Regards
> Ole
>
>
>
> ---In [email protected], <s.friedrich@...> wrote :
>
> Hello to all those interested, I have now built a push-pull inverter
> for the transverter anti-drive to drive it. From 37 Hz 650Hz is fully
> adjustable and the pulse width.
> A simple square wave signal is generated and sent. It works
> wonderfully. The interference is a problem when switching 350V peaks.
> I have now wrapped all power lines with aluminum foil and this
> one-sided grounded. The boards I will install in an aluminum housing
> and also this ground, the disturbances are almost all gone. By
> shielding, the energy is no longer emitted and remains in the lines
> apparently, since the shielding, the high-power mosfets are very hot
> although they are used at most 10%. The cut-off voltage at the drain
> increases in the kilovolt range when the transverter is connected. The
> complete line to Transverter is also shielded. I now wanted to build
> an Energy Recovery Snubber to recycle that energy. First test show
> that you can drive the transverter so much more efficient. I have to
> build this inverter even more reliable or change.
> Best regards
> Sven
>