Partnered Output Coils - Free Energy

[partzman]

[snip]

My scope dose have a math function,and will display the math trace,but i cannot figure out how to get it to display the value of that trace.

[snip]

I found an online manual for your scope and you probably already know all this, but here is my understanding of how to get the Math measurements to show.

As you obviously know, pressing the Math button displays the Math trace so try the following to get the readings.

Press the "Measure" button to reach the automatic measurements and select the "Voltage" menu.  From this menu, select the input source as "Math" and then press the "Type" button or use the "Universal" knob to select "Cycle Mean" as the measurement type. I think this will display the Math measurements.

You can also define the Math measurements in the "Manual Cursor" mode if you like to use manual cursor control.

Hope this helps!

Edit: I forgot that you have to define which math function you want performed and in this case it would be Ch1 x Ch2.  The manual shows this in the manual cursor setup but is not clear to me in the automatic function. It doesn't help not being familiar with this scope!

partzman

[Vortex1]

Brad

It was mostly the open secondary testing I was concerned about early on. With 100 ohms or less loading , the winding self resonance should be fairly well tamed, and you will have  nice flat pass band over it's reasonable, usable range of frequencies, so not a problem.

Regards, Vortex1

[tinman]

 

[tinman]

Really?

You have 1.441 V RMS across the primary x 6.4 mA RMS current through the primary = 9.2 mW.

The problem is that the current is not linear with the voltage.  The current increases faster than the voltage rises rendering your calculation wrong and the measurement bad.  The power is actually higher than you are calculating.  The same thing applies to your power measurement across the FWBR + LED.  I mentioned this issue just the other day and Vortex1 echoed what I said.

Note in your diagram you also have a problem on your power out calculation.  You have the power in as being the power that is going into the primary coil which is fine.  But then you are including the power dissipated across R1 as part of the power out which is wrong.  If anything, the power dissipated across R1 can either be ignored by choice to take it out of the picture, or you can include it as part of the input power which is supplied by the function generator.

Indeed,and that is where my screwup was
Thanks MH for spotting that

https://www.youtube.com/watch?v=_V4VqFSlCxY

[tinman]

I found an online manual for your scope and you probably already know all this, but here is my understanding of how to get the Math measurements to show.

As you obviously know, pressing the Math button displays the Math trace so try the following to get the readings.

Press the "Measure" button to reach the automatic measurements and select the "Voltage" menu.  From this menu, select the input source as "Math" and then press the "Type" button or use the "Universal" knob to select "Cycle Mean" as the measurement type. I think this will display the Math measurements.

You can also define the Math measurements in the "Manual Cursor" mode if you like to use manual cursor control.

Hope this helps!

Edit: I forgot that you have to define which math function you want performed and in this case it would be Ch1 x Ch2.  The manual shows this in the manual cursor setup but is not clear to me in the automatic function. It doesn't help not being familiar with this scope!

partzman

I will give this a try
Thanks for your help.

Brad