# Multisim - Magnetically coupled circuits

Discussion in 'Homework Help' started by xxxyyyba, Oct 20, 2012.

1. ### xxxyyyba Thread Starter Member

Aug 7, 2012
249
2
Is it possible to simulate magnetically coupled circuits using Multisim?
For example, can I simulate circuit below?

2. ### JoeJester AAC Fanatic!

Apr 26, 2005
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Look for coupled coils and then place the coefficient of coupling as a constant.

3. ### xxxyyyba Thread Starter Member

Aug 7, 2012
249
2
Something like this?

I found coefficient of coupling using formula k=M/sqrt(L1*L2).

Last edited: Oct 20, 2012
4. ### JoeJester AAC Fanatic!

Apr 26, 2005
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What is the purpose of U1 in your circuit? I don't think ohmmeters should be placed in "series" with the voltage source.

5. ### xxxyyyba Thread Starter Member

Aug 7, 2012
249
2
U1 is ammeter, my task is to find current in circuit using multisim, I didn't mention it at beginning...

6. ### xxxyyyba Thread Starter Member

Aug 7, 2012
249
2
I made mistake in my first post, instead of "e(t)=5.94*cos(3*t+140)" it should be "e(t)=220*sqrt(2)*sin(314t)".

Last edited: Oct 20, 2012

Apr 26, 2005
3,403
1,230