Oscillating sine wave LC tank magnet motor.

[synchro1]

Have another quick look at the first few seconds of this video:

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


The video I posted a few comments ago where the bifilar's illuminating an LED by sine wave off ferrite in the solinoid coil core gave me an idea. I ran a Bedini off the quadfilar in the video. None of the wires were connected to each other. The four coils were connected back to themselves in loops. Magnetic inductance coupled the circuit.


I think wiring the quadfilar as two series bifilars, each with a matching capacitor might spin a magnet sphere by tank oscillation if the sphere were accelerated to the tank frequency by the spiral bifilar Bedini mounted alongside. This eliminates the need for the costly ceramic bearing. Take notice the PVC coupling safety shield!   


@MarkE,

Two series bifilars of identical inductance have identical capacitance. Two identical capacitors have identical capacitance. The bifilar tank alone with an external capacitor can not match it's self resonating frequency to the bifilar coil's capacitance. I believe this is the point "The Old Scientist" makes in his "Bifilar Tank" video.

[MarkE]

Quote from MarkE:

"Synchro is using a nonsense term of his invention".

How's "two matching self resonant capacitors"? Capacitors can be of equal value but have dissonant self resonance.

The term that you invented in post #4 is "capacitive resonance".  There is no such thing.  The self-resonant frequency of a capacitor is the result of the component capacitance and the effective loop inductance of the component as it is hooked up in the circuit.  At the self-resonant frequency, the capacitor and its wiring appear as a resistance across whatever they are wired to that is generally rather small, IOW approximately a short-circuit.  If connected in parallel to another capacitor that has a much higher self-resonant frequency, then the combination has a parallel resonance between the two self resonant frequencies that exhibits a local impedance maximum.

Equal value capacitors even of identical construction can as connected in a circuit resonate at different frequencies if the overall loop inductances as wired are different.  "Dissonant" is a peculiar adjective to describe different self-resonant frequencies.

[synchro1]

@MarkE,

One Quadfilar of two bifilars, sharing one capacitor. The coils magnetically coupled instead of connected in series. A Hartley?

I copied the term from the "Old Scientist" I didn't invent it. Secondly, I acknowledged that capacitance is additive, why are you over working his semantics?

[MarkE]

@MarkE,

One Quadfilar of two bifilars, sharing one capacitor. The coils magnetically coupled instead of connected in series. A Hartley?

I copied the term from the "Old Scientist" I didn't invent it. Secondly, I acknowledged that capacitance is additive, why are you over working his semantics?

Synchro you used a term that has no meaning.  It doesn't matter if you borrowed it from someone else.  It is still meaningless.  Meaningless terms only distract from the conversation.

N filar windings are by definition magnetically coupled.  The series coils in a Hartley work better if they are coupled and not isolated.

[synchro1]

@Marke,


Perhaps the "Old Scientist" meant that the bifilar tank lacked "Matching self resonant capacitance".


Here's a very recent video from Igor Moroz:

Igor's spinning inside a solenoid coil core from a transistor oscillation and lighting an LED.

https://www.youtube.com/watch?v=bFP8j6dUW0k