The bifilar pancake coil at its resonant frequency

[MileHigh]

Normal transformer is less expensive then a pancake coil ? i don't think so ... only the core will increase the final price of transformer in relation to pancake coil just like their losses.

A ordinary transformer will transfer power and it will be superior in performance ?
I don't think so too . Test it and after you could talk more Assertively.

What is meaningless is your certainties sometimes .
Have a nice day

Nelson Rocha

There are billions of transformers manufactured every year for power transfer applications and they are not manufacturing Tesla series bifilar pancake coils, are they?

You feel free to define a power application for a transformer and then compare the best conventional transformer suited to the application with the best TBP coil suited to the application and compare efficiency and cost and there is no chance that the TBP coil will outperform the conventional transformer.

Just look at the geometry of a TBP coil with very small-diameter inner turns inside of larger-diameter outer turns.  The small-diameter turns will give you a weaker, poorer coupling as compared to the larger-diameter turns.  Plus there is flux cancellation between the turns of a TBP coil.  These are all aspects of the device telling you that it will function poorly as a transformer.  You are supposed to be able to look at cases like this and apply your knowledge.

I am absolutely certain that there are better, more cost-effective solutions for power transfer than TBP coils.

[nelsonrochaa]

You feel free to define a power application for a transformer and then compare the best conventional transformer suited to the application with the best TBP coil suited to the application and compare efficiency and cost and there is no chance that the TBP coil will outperform the conventional transformer.

Just look at the geometry of a TBP coil with very small-diameter inner turns inside of larger-diameter outer turns.  The small-diameter turns will give you a weaker, poorer coupling as compared to the larger-diameter turns.  Plus there is flux cancellation between the turns of a TBP coil.  These are all aspects of the device telling you that it will function poorly as a transformer.  You are supposed to be able to look at cases like this and apply your knowledge.

I am absolutely certain that there are better, more cost-effective solutions for power transfer than TBP coils.

"There are billions of transformers manufactured every year for power transfer applications and they are not manufacturing Tesla series bifilar pancake coils, are they?"

Yes it is true , almost transformers are not designed in a bifilar pancake coils, But is this something new? Everybody now that fact, About the reasons to continue use normal transformers ... I'm not so sure anymore if the reason to their use, is their advantage  in relation to other alternatives. Imagine that all the transformers in industries did not need to use iron core . How could this could hypothetical change all industrial and financial  reality and lobby ?
Is the question ...


Nelson Rocha

[AlienGrey]

"There are billions of transformers manufactured every year for power transfer applications and they are not manufacturing Tesla series bifilar pancake coils, are they?"

Yes it is true , almost transformers are not designed in a bifilar pancake coils, But is this something new? Everybody now that fact, About the reasons to continue use normal transformers ... I'm not so sure anymore if the reason to their use, is their advantage  in relation to other alternatives. Imagine that all the transformers in industries did not need to use iron core . How could this could hypothetical change all industrial and financial  reality and lobby ?
Is the question ...


Nelson Rocha

Nelson Hi yes it's said to be the ion in the transformer you mention, i'm not sur 'E & I' laminations are so good, 'UU' type would return much more, and give me the no free meal exists joke, the nefalines have been having them since the beginning of time.

Talking about pancake coils would there be any 'special' wire length or frequency where a return is greatest ? 

[AlienGrey]

There are billions of transformers manufactured every year for power transfer applications and they are not manufacturing Tesla series bifilar pancake coils, are they?

You feel free to define a power application for a transformer and then compare the best conventional transformer suited to the application with the best TBP coil suited to the application and compare efficiency and cost and there is no chance that the TBP coil will outperform the conventional transformer.

Just look at the geometry of a TBP coil with very small-diameter inner turns inside of larger-diameter outer turns.  The small-diameter turns will give you a weaker, poorer coupling as compared to the larger-diameter turns.  Plus there is flux cancellation between the turns of a TBP coil.  These are all aspects of the device telling you that it will function poorly as a transformer.  You are supposed to be able to look at cases like this and apply your knowledge.

I am absolutely certain that there are better, more cost-effective solutions for power transfer than TBP coils.

It's not 'Energy transfer we need, all that's available commercially and available from the 'grid', but it's never going to be 'free'

[tinman]

There are billions of transformers manufactured every year for power transfer applications and they are not manufacturing Tesla series bifilar pancake coils, are they?

You feel free to define a power application for a transformer and then compare the best conventional transformer suited to the application with the best TBP coil suited to the application and compare efficiency and cost and there is no chance that the TBP coil will outperform the conventional transformer.

Just look at the geometry of a TBP coil with very small-diameter inner turns inside of larger-diameter outer turns.  The small-diameter turns will give you a weaker, poorer coupling as compared to the larger-diameter turns.  Plus there is flux cancellation between the turns of a TBP coil.  These are all aspects of the device telling you that it will function poorly as a transformer.  You are supposed to be able to look at cases like this and apply your knowledge.

I am absolutely certain that there are better, more cost-effective solutions for power transfer than TBP coils.

Well,im with you on this one MH,as i have seen nothing more than a lower resonant frequency from a BPC,than that of a single wound coil,of exact same dimensions,wire size,and wire type.

What i have seen so far,is !some! here,harping on about how special the BPC is,but show absolutely nothing to back up this claim.

From this we can deduce that they cannot show anything great about the BPC,and that the fanaticism is only there for the BPC for no other reason than that of the name behind it !Tesla!.

So,why would the BPC have a lower resonant frequency of that of a single wound coil of the same parameters?.

Well my theory on that.
With the single wound coil,both the resistive value across each winding,and the capacitive value between each winding,would decrease as you go from the outside winding,to the inner winding.
With the BPC,only the capacitive value between windings would decrease,as you go from the outer winding,to the inner winding. The resistive value across each two windings would remain a constant value.
The symmetry of this resistance value,may be why the BPC has a lower resonant frequency.

Anyway,that's my two cents worth.


Brad