Chris
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You regularly keep coming back HERE, to this Thread... Why?
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You post my name here with outright lies and false accusations ...and you say What ??

*Note
I have a family crisis I have to tend to out of state...........

I truly hope you come to your senses

Chetkremens@Gmail.com

Chris

I think you have forgotten to take your med's today
WTF is that sh*t,and who is this Mark Goldes?.

Are we going to discuss GG's wonder transformer,or are you happy to just sling sh*t around all day?

Are we going to be replicating your OU POC setup,or are we just going to talk about it for another 7738 post's ?


Brad

Brad, when I was growing up, one of my very fortunate experiences was to see the progress of The Britten V1000 Racing Motorcycle

John Britten I never met, but I know his face from all the Media Coverage. John passed away only months after his success from Cancer I believe.

John inspired me, he was the ultimate Inspiration for a young lad. He is still my inspiration.


A   single   man,   in   his   shed,   hand   built   a   Motor   Cycle   that   went   out   and   beat   all   of   the   worlds   best   Motor   Cycles   at   Daytona,   One being Ducati's Monster...


I grew up in the same Town as John lived. I asked the question, to my self, what made John Britten so awesome? Do you know what the answer is?

So, I encourage you, do ya dardest, if you feel that you can make the list of Achievers, then go for ya life. Lets see how far you get with it, and lets see what you can share with everyone else here?

Give your new Workshop a test run and see if its got MoJo??


  Chris Sykes
       hyiq.org

Already onto it.
Just finished winding a POC toroid transformer-like the one in the video you shared.

So,should end up with the same result's-even have the AC clamp meter to read the current in and out


Brad

Brad, make the coils Modular, easier to work with as Single Coil's. Easier to understand as Singular magnetic Fields. I guess its on a Single Core? POC toroid transformer? Cant then...

First, look for the effects, exactly as I have shown, look for Output, with no effect on the Input, Loading/No Loading or shorting/No Shorting.

Look at the Currents in the Coils, make sure each is opposing and you are getting Voltage on the Output at the same time. As we know, no Current can flow, if there is no Potential Difference (Voltage)

Then we can make improvements once you can see the effects.

A Clamp meter I also have, and I do not use, instead, lets see if you can fool Clarke Hess meters? 

  Chris Sykes
       hyiq.org

The one that interest's me,is the one by Wistiti-very simple and easy to replicate.

https://www.youtube.com/watch?v=RKfr8bwVhkc

As the same clamp meter and volt meter is being used to measure both P/in and P/out,then any error being made by either or both of the meters would exist in both P/in and P/out.

As the load on the output is a resistive load,then we can safely say that the voltage/current phase relationship would be in phase,as a voltage would only increase across the load as the current flowing through the load increased.

On the input side,the meters are measuring maximum values,and so even if the V/I phase relationship is out(power factor),this would only mean a lessor P/in value than that calculated by using the meters numbers.

The only thing i see in that video that could be causing an incorrect meter reading,is when he has the clamp meter on the input,the wire on the outside of the clamp meter is very close to the jaw tip of the clamp meter,and could be inducing a second magnetic field that the jaw of the clamp meter is picking up.

One has to also ask-why has Wistiti not taken this further,if the results were that good?.

Anyway,my setup is a smaller version of his.


Brad

Tried using the clamp on meter,but currents are to small to register

You'll need a good wattmeter, which considers the phase shift in HF AC circuits.

You'll need a good wattmeter, which considers the phase shift in HF AC circuits.

The output load is resistive,and so there will be no phase shift.

Maximum values are being used to calculate P/in,and so if there was a phase shift between current and voltage,the end result would be less than that already calculated.

There is also the fact that we are dealing with voltages less than 10 volt's.


Brad

Hi Brad.

'Twas just a thought!!

Cheers Graham.

Chris,

You have referenced the Preva device previously and indicated there were unique operating properties to the device as shown in his video, so I decided to replicate using a ferrite core wound with three identical windings and operating at 15KHz.  The schematic is attached below and shows all probe connections for identification in the scope pix also attached below.

Referring first to the "Preva Test w_2x100 Ohm Load", the Math(red) channel indicates the true input power to be 1.183 watts.  CH2(blu) is the voltage across R1 and is seen to be 4.793v rms which calculates to .2297 watts.  CH3(pnk) shows 9.766v rms across R2 which calculates to .9537 watts for a total output of 1.1834 watts for a COP = .999.  Very efficient but I see no evidence of OU here.

Referring next to "Preva Test w_2x100 Ohm Load KCL" we examine the currents in the circuit to see if there is any violation of KCL.  The reference channels R1 and R2 are stored current measurements for loads resistors R1 and R2 respectively.  The Math(red) channel shows the sum of the ref currents R1/R2 while accounting for phase and show the result to be 51.16ma rms.  This is extremely close to the input current shown on CH4 which is 51.38ma.  Therefore, I see no evidence of any violation of KCL with the device when operating with loads.  In fact, it can be shown that KCL is also not violated without any loads connected. 

So, IMO the Preva device is a very efficient transformer which is no small feat, but not OU!

pm