Partnered Output Coils - Free Energy

[tinman]

 
  When dose current flow "through a capacitor"?
              John.

Current will flow through a capacitor until there is no potential difference across that capacitor.
A displacement current can flow when the voltage across the capacitor varies with time.

[gyulasun]

Current will flow through a capacitor until there is no potential difference across that capacitor.
A displacement current can flow when the voltage across the capacitor varies with time.

Hi Brad,

My take on this that no current flows through at any time but the charging and discharging currents bring or take the charges as the outside circuit defines.

Gyula

[poynt99]

Well, is it still the E field that induces the sec with a low permeability core?

Mags

Yes, absolutely.

Let's take that thought to the extreme then; what if you have a bifilar-wound cylindrical coil, and you use one pair as your primary, and one pair as your loaded secondary, and you energize the primary. Will there be induction from the primary to the secondary?

Will it be the E field generated by the primary that induces an emf in the secondary? Yes.

If you remove the core in our original example and leave the two coils in their original positions, how much emf will be induced in the secondary? Why?

[poynt99]

See, Its hard to comprehend that the mag field only exists in the core.

When the primary is energized, are not the mag fields developed at and within the wire itself?  Where else in the universe is it that when a current is sent through a wire that the field from that wire begins and originates elsewhere and is non existent around the wire itself? 

Mags

Of course the magnetic field originates at the wire, and there will be a tiny tiny bit of field on the outside of the coil. But even without the core, the flux is concentrated on the inside of the coil, and you have a relatively nice uniform (straight) B field in there. A high permeability core concentrates that flux even more and so the ratio of flux inside to outside the core is even greater than with an air core.

[poynt99]

Question for you all.
Hook an AC cap to an AC current source-dose a magnetic field exist with the E field between the cap plates?.

Yes. And I read somewhere that it was in fact measured/proven.

Current does not flow through a capacitor; there is a changing E field (assuming the voltage across the cap is changing), which produces the changing B field as shown in this diagram. Exactly opposite to the case with our coils and core. In the case of a capacitor, a high permittivity dielectric serves the exact same purpose as the core in our coil; but it concentrates the E field.