Quote from: nelsonrochaa on April 22, 2017, 03:43:55 PM
What you mean when you say that is not a realistic approach make a transformer to power transfer ?
Did you already try it ? Did you know any report where that was tested to you have sure about that ?
Point me please , because i will like read to compare with what i observed .

thanks

You basically said, "No there is a good use for a Tesla series bifilar pancake coil for power transfer, take a look at my video clip."

In your clip you make a light bulb light, and you make a motor run.  Big deal, that means nothing.  You didn't prove anything, you just made an anecdotal demonstration with no measurements and no analysis of the data.

I will simply repeat to you that a Tesla series bifilar pancake coil does not demonstrate any advantage for transformer power coupling and there are far better ways to couple power using a transformer.  There are literally thousands of different models of transformers manufactured in the billions by hundreds of companies every year. 

Sorry, the fact that you can make a light bulb light up means nothing.  The burden would be on *you* to present data that this coil does this function in a better way than any other solution. 

Quote from: MileHigh on April 22, 2017, 04:02:51 PM
You basically said, "No there is a good use for a Tesla series bifilar pancake coil for power transfer, take a look at my video clip."

In your clip you make a light bulb light, and you make a motor run.  Big deal, that means nothing.  You didn't prove anything, you just made an anecdotal demonstration with no measurements and no analysis of the data.

I will simply repeat to you that a Tesla series bifilar pancake coil does not demonstrate any advantage for transformer power coupling and there are far better ways to couple power using a transformer.  There are literally thousands of different models of transformers manufactured in the billions by hundreds of companies every year. 

Sorry, the fact that you can make a light bulb light up means nothing.  The burden would be on *you* to present data that this coil does this function in a better way than any other solution.

I basically make a anecdotal demonstration with no measurements and no analysis with a incandescent  light a 100W 230v bulb with a input of 30v and less 2 amp .  I understand how inefficient that is , and anecdotal i could become myself .
Please ignore that  , i don't have any intention to confuse your head with anecdotal ideas lol

Nelson Rocha

Quote from: nelsonrochaa on April 22, 2017, 04:18:15 PM

I basically make a anecdotal demonstration with no measurements and no analysis with a incandescent  light a 100W 230v bulb with a input of 30v and less 2 amp .  I understand how inefficient that is , and anecdotal i could become myself .
Please ignore that  , i don't have any intention to confuse your head with anecdotal ideas lol

Nelson Rocha

Oh, 30 volts x 2 amps = 60 watts, and you made a 100-watt 230-volt light bulb light up?  It sounds amazing.

Did you actually measure the voltage and current through the light bulb?  It's tricky considering that the resistance of the filament varies with temperature.

On this forum, we have seen this countless times before, and it means nothing.  I am going to ignore it, as will everyone else with a basic understanding of these issues.

Quote from: MileHigh on April 22, 2017, 04:27:48 PM
Oh, 30 volts x 2 amps = 60 watts, and you made a 100-watt 230-volt light bulb light up?  It sounds amazing.

Did you actually measure the voltage and current through the light bulb?  It's tricky considering that the resistance of the filament varies with temperature.

On this forum, we have seen this countless times before, and it means nothing.  I am going to ignore it, as will everyone else with a basic understanding of these issues.

Yes just ignore it in that way you head will not get any "junk" by me . Way you systematically try talk not only by you by the others  ?
Did you think others are not able to decide what is good or not ?  seems not .


Nelson Rocha

PS- See MH , i not only light neon in one hand

Quote from: gyulasun on April 21, 2017, 06:58:31 PM
Hi Itsu,

To refine this tuning procedure, both coils would need to be paralleled with a variable capacitor
and first both of these capacitors would need to be set to a half capacitance value (half opened capacitors).
This way you could tune any of the coils either above or below of the frequency established by
the half opened capacitors, and this then could help finding the best coupling where the response
has a single peak at the common resonance frequency for both coils.  Both LC circuits mutually detune
each other as they are coupled i.e. getting closer to each other hence the need to either increase or
decrease the individual coil resonancies and this can be done by opening or closing the capacitors.

But this tuning you nicely show in the video may also be enough already to test the load of a LED or
any other load connected to the pick-up coil how it influences the small current consumption of the
main TBP at the paralel resonance - this was the original goal for tuning the pick-up coil to be resonant
with the main TBP coil.

Thanks
Gyula

Gyula,

i did some further tests like you mentioned and put a variable cap across each TBP coil.
Even when 90° turned away and quite a distance away, i see the pickup coil picking up the signal where both coils are on the same resonance frequency.

Approaching the driven coil with the pickup coil shows the split in resonance of both coils which increases more and more untill they are touching each other.
The both resonance points in each coil are a 500KHz away now.

Next i reversed the pickup coil and did an approach again showing that at some point the pickup signal disappears (15cm away from the driven coil).
When further approaching, the signal reappears and the splits in resonance frequency happens again like before.

Finally i went over to a single resonance freqeuncy (no sweeping) to show the phase difference between the both coils signals.
They are either 180° out of phase or when the pickup coils gets reversed in phase.

Video here:  https://www.youtube.com/watch?v=AQEJ08TRNkU


Regards Itsu