Skycollection's "Pentafilar Pancake" inductively coupled "Overunity Potential".

[picowatt]

Synchro1,

Your description of the operation of Skywatcher's circuit is incorrect.

Although his circuit does indeed use both an NPN and PNP transistor, they are not connected similarly to, or being used in a like manner to, the complimentary emitter follower circuit you posted.  They are totally different circuits with very little in common regarding their operation.

Speaking simply, and briefly, in Skywatcher's circuit, only the NPN transistor passes significant coil current.  The PNP is being used to drive the base of the NPN, turning the NPN on and off.

Also, the frequency of oscillation is not determined by the ft of the transistors.

PW

[synchro1]

Synchro1,

Your description of the operation of Skywatcher's circuit is incorrect.

Although his circuit does indeed use both an NPN and PNP transistor, they are not connected similarly to, or being used in a like manner to, the complimentary emitter follower circuit you posted.  They are totally different circuits with very little in common regarding their operation.

Speaking simply, and briefly, in Skywatcher's circuit, only the NPN transistor passes significant coil current.  The PNP is being used to drive the base of the NPN, turning the NPN on and off.

Also, the frequency of oscillation is not determined by the ft of the transistors.

PW

@picowatt,

You don't think the circuit's generating a sine wave oscillation? The base and collector of each transistor are connected. The 2N2222 has it's emitter connected to the ground and the emitter of the 2N3906 connects to the positive pole of the power source. The only pathway to the ground for the 2N3906 is through the 2N2222. The PNP drives the base of the NPN, but the emitter of the NPN drives the base of the PNP. That equals a "Push Pull"!

[skycollection]

Is very simple: when the circuit goes into self oscillation is similar to how a JOULE THIEF CIRCUIT operates, Eeverything iluminate brightly....! The circuit and the magnet "open the door" of the power and induce the voltage to the other groups of pancake coils, its only INDUCTION produced by the principal pancake coil, (number 1) this is not RADIO WAVES, or ANTENA...! THIS IS A GREAT TRANSFORMER....!!

[synchro1]

@Jorge,

There's no doubt it's a "Great Transformer". It may be a great "Short Wave Radio" too.

[Vortex1]

@Vortex1,

Thanks for uploading Skycollection's schematic. Do you think the circuit's broadcasting in the RF range?

If the circuit is switching at the frequency of rotation of the rotor, it would be in the low audio range, especially if it is a sine wave as sky collection claims.

If the coil is being hard switched, and no other significant capacitance shunts the coil, then there may be harmonics that could get into the low frequency radio spectrum, although the amount of energy would be very small due to the catch diode allowing most of the flyback energy to be captured by the lights.

Without scope shots my guess is that the waveform is of a typical clamped flyback circuit with only minor ringing due to coil stray capacitance.

Search for "SCR equivalent circuit" and you will find similar images to the pnp-npn connected pair, although  the usage in this circuit is a bit different. The real name is "silicon controlled switch" invented over 60 or more years ago.