Check your inductor Knowledge!!!!!!!!!!!!!!!!!

[grittinjames]

Hi,
I having two inductor and a AC source.
I am connecting this two inductor in series and applying AC accross this series conection.
The magic in middle I am getting double Voltage with respect to both ends

How This is Happening?

 

[FvM]

To request some semantical precision:

Which voltage differential is double of what?
Speaking of two inductors implies, that they are actually two and don't have a considerable coupling?

 

[LvW]

Hi,
I having two inductor and a AC source.
I am connecting this two inductor in series and applying AC accross this series conection.
The magic in middle I am getting double Voltage with respect to both ends
How This is Happening?

What does it mean "I am getting ....."???
Did you measure it ? Or did you simulate ? Or has somebody told you about this ?
In any case, it is not "magic" - it´s simply wrong.

 

[xulfee]

it'll be resonenet frequency,derice equation for series inductors put values of voltage n frequency,u'll get the result

 

[grittinjames]

I have attached circuit for same.
I dont think it is due to resonance

 

[grittinjames]

this is an isolation transformer. and i am getting a voltage od 460 at the point I marked

 

[mathsolvesit]

First you said you have 2 inductors, then you showed us a schematic of what looks like either a coupled inductor or a simple transoformer.

If you could describe what you have, someone could help you.

hint: Whats the core? what's the leakage inductace? What's your interwinding capacitance?

 

[FvM]

So my original doubts regarding the unclear question came true. You can't seriously call this two inductors. You get 460V when the winding ratio is 2:1, assuming an ideal transformer. If the left winding hasn't a rating of 460V, the transformer get's saturated. A more efficient auto transformer solution would use two 1:1 windings (with 230 V rating) and supply the input voltage to the midpoint of the series connected windings (with equal windings sense instead inverted as you did).

 

[grittinjames]

Same will happened when I tried with two coupled inductor of same turns.
I tried in spice also.
This is happeing due to some king of mutul indudtion.But I dont know how

 

[FvM]

You should post the complete parameters to get an explanation.

 

[Mazz]

Why not trying with old paper, pen and Kirkhoff's voltage law, playing with phasors for a while?
After all is not so complex, you have a single current.
Just use L1, L2 and M, you'll get a simple linear equation. Solve it, and you're done.
Mazz

 

[grittinjames]

You should post the complete parameters to get an explanation.

What parameters you looking sir?
Just tell me how we can get double voltage from an isolation transformer when I connected in the way I shown in figur?