Hi friend can you tell me how to make a DC transformer??

 

Depending on your definition of dc transformer.......it could be many things.......an amp could be called a dc transformer.

What's the meaning to you?

 

Hello,

You will not find any DC transformers.
Transformers are only for AC.

Bertus

 

It is usually called an DC-DC Inverter.
Max.

 

A varying DC to a transformer can induce a flux that can be used to get a varying dc at the other end of the transformer that depends on the turns ratio hence dc transformer

 

A varying DC to a transformer can induce a flux that can be used to get a varying dc at the other end of the transformer that depends on the turns ratio hence dc transformer

The output would be the derivative ("instantaneous rate of change") of the input current so it's only passing an AC signal (the variations decomposed into all its harmonic frequencies).

https://www.allaboutcircuits.com/te...chpt-9/practical-considerations-transformers/

Mathematically, this is another example of calculus in action. Because the voltage is proportional to the flux’s rate-of-change, we say that the voltage waveform is the derivative of the flux waveform, “derivative” being that calculus operation defining one mathematical function (waveform) in terms of the rate-of-change of another. If we take the opposite perspective, though, and relate the original waveform to its derivative, we may call the original waveform the integral of the derivative waveform. In this case, the voltage waveform is the derivative of the flux waveform, and the flux waveform is the integral of the voltage waveform.

 

@Engr Tech as you can tell, there
Is some question as to what it is that you are referring.

If possible please give an example of ma Direct Current transformer.

 

A varying DC to a transformer can induce a flux that can be used to get a varying dc at the other end of the transformer that depends on the turns ratio hence dc transformer

No!
If you are varying the DC, it is no longer DC, but Dc with an AC superimposed. Just the AC gets through.

All that get "through" the transformer with DC applied is created by the resulting rising magnetic field. This changes from no current until the current stabilizes, depending on the inductance controlling the rate of change, and the DC resistance of the windings and supply voltage. Once it has stabilized there is no output. And, when the current is removed, the magnetic field rapidly collapses and that will generate a very large voltage spike as the magnetic field collapses very fast.
But, when the DC current is stable, there is no output from the transformer.
They only work with "Relative Motion" between the magnetic field and the conductors.
Just the same as a generator. That will work as the relative motion is supplied externally by a mechanical means.