Magnet assisted transformer

[Kajunbee]

Assuming there are no tricks I was wondering if anyone had and explanation for what is happening. The only information is that transformer is fed with 50 percent square wave and amp meter reading.

--- Updated Mar 21, 2022 ---

I read the comment section and the third reply seemed reasonable but would like to know experts thought. Or is video faked somehow.

 

[FvM]

Is it asking too much to expect a brief description of the test setup?

Anyway, if the core is biased with a strong static field, the magnetization current becomes asymmetrical, thus showing an average DC component. I won't name it DC transformer.

 

[dick_freebird]

Mag-amp?

 

[wwfeldman]

i think FvM is correct - adding the magnet tends to bias the magnetization of the core, etc

the comments on you tube that imply you can get something for nothing are wrong.
there is no free energy
there are in fact losses n the core, wires, motor, etc, so you always get out less than you put in.

 

[dick_freebird]

I think sometimes about whether a undirectional transformer
(like flyback) could be run at higher current density, if the
core were biased against normal current polarity so as to
use 2 quadrants rather than one, for double the B-H swing.

Or, whether a pre-magnetized core would be of any benefit
in the same way. But not enough of a magnet-head to know
whether this is a thing, a done thing or a nothing.

 

[The Electrician]

I think sometimes about whether a undirectional transformer
(like flyback) could be run at higher current density, if the
core were biased against normal current polarity so as to
use 2 quadrants rather than one, for double the B-H swing.

Or, whether a pre-magnetized core would be of any benefit
in the same way. But not enough of a magnet-head to know
whether this is a thing, a done thing or a nothing.

They are real parts: https://ieeexplore.ieee.org/documen... given inductor current and inductance rating.

 

[Kajunbee]

I was able to find this video that demonstrates the effect a static magnetic field has on transformer. I was hoping to find some information on unidirectional square wave pulsed coils but no such luck. If there is any disagreement on content of video I would interested to hear them.