The Magneformer-lenzless transformer ?

[tinman]

Many people are confused about what "AC" really means. But "transformer effect" doesn't depend on true alternating current in the primary of the transformer. Recall that induced voltage in a secondary is proportional to the time rate of change of... the magnetic field in the primary. And the magnetic field is proportional to the current (amp-turns). So if the current rises and falls, that's all that is needed for transformer induction effect to happen. The current doesn't have to actually reverse, it can keep going in the same direction, as long as the amplitude of the current rises and falls. This of course produces a change in the magnetic field. The secondary output will be true AC though, even if the input to the primary is pulsed DC or "AC" with enough DC offset so that the current doesn't actually reverse.
"dB/dt", the time rate of change of the B field, can be thought of as the instantaneous slope of the curve describing the B field strength over time. So while the B field is increasing, dB/dt is positive, and when the B field peaks dB/dt is zero, and when the B field is decreasing, dB/dt is negative. So the induced voltage in the secondary flips sign at the peaks (and valleys) of the current which is causing the primary B field to wax and wane.

Hi TK
Yes,i know what your saying.Just like it only takes a north field passing over an inductor to produce an AC output.This is why we have an AC output on the tank circuit. But the input is DC,and the primary coil only has a DC current flowwing through it at all times.If we put a DC current into an inductor,a magnetic field will be produced around that inductor. When we switch that coil off,the field collapses-but it never reverses polarity.Now if we load that kickback in the way of charging a battery,or place a resistive load across it,then a BEMF is produced from the coil that apposes that collapsing magnetic field. And as you can see in the scope shot,the current always flows in the same direction.

Definition of AC current:-In alternating current (AC, also ac), the flow of electric charge periodically reverses direction.

Well as we see in the scope,there is no change in direction-only a change in amplitude.
The voltage potential is ofcourse reversed,due to the way the circuit is-much the same as the SSG circuit.This is why the positive of the P/in become's the negative for the P/out,and the collector that use to be our negative side,now becomes our positive potential-thus the diode on the collector.

[tinman]

MH
Once again,you are clutching at straws,and being far to picky.
Lets have a look at a couple of scope shots from the video-below.
Dose this not clearly show an indication,or give you a visual reference as to how little of the total power supplied to the system,is being supplied by the signal generator?

Also there is no AC current going ito the drive coil,nor coming out of it.Once again you are deviating from the true meaning of AC,and getting it mixed up with something else.

Definition of AC: In alternating current, the flow of electric charge periodically reverses direction. In direct current, the flow of electric charge is only in one direction.

The current flow through the driven coil remains in the same direction at all time's-only the amplitude of that current flow changes !! that is not AC current in the true sence of the definition !!

Edit-well now it seems that i cant post attachments-no !ADD ATACHMENT BUTTON!?-only clear attachments

[Newton II]

http://www.youtube.com/watch?v=36W4UdMKVwU


Can somebody explain what is he doing?   Magnetic standing columnar waves??

[tinman]

http://www.youtube.com/watch?v=36W4UdMKVwU


Can somebody explain what is he doing?   Magnetic standing columnar waves??

Yes-he is playing with his balls

A standing wave is just a stationary wave,which means it remains in a constant position.
Not to sure where the columnar part come into it, in regards to his video?.

[tinman]

@MH
Scope shots regards to post 41