# Tagged Questions

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### Linear Transformer and Ideal Transformer: electric circuit question

The question is to determine k in so that no current flows in Zx. I literally have no clue how to start. If there is no current in $Z_x$ that would make it an open circuit, so for it to be ...
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### Ideal inductor in series with a resistor:

The question is to find the thevenin equivalent circuit across a and b. The inductors are ideal transformers. I stretched the inductors 180 degrees to make the circuit easier to analyze. From ...
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### Basic electric Circuit with inductors

Its required to find $v_o$. The question should be easy but I am not getting the same answer as offered by the textbook which is 2cos(400t-53). I am getting 5cos(400t-53). I tried doing in two ...
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### Understanding this unknown transformer

This is my first time posting but I have gained a lot of knowledge from this community over the past few months. Here is the situation: I have an old Hobart OM-321 Tig welder which my tech has told ...
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### Anyone know the purpose of these two inductors around a metallic ring?

So this link on ebay shows a power board that I have taken out from my microwave. What is the purpose of these two wrapped around a metal ring? Also in general what is the purpose of this power board ...
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### Transformers as Inductors (Weird Results)

If a transformer's primary and secondary are connected in series, then the total inductance of the result, is greater than the summation of each coil separately. That is to say: \\$ L_{total} > ...
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### How do I use a transformer as an inductor?

Lp: Self inductance of the primary winding. Ls: Self inductance of the secondary winding. Lm: Mutual inductance between the primary and secondary windings. Assume that I need an iron core ...
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### How do I make a real-world verison of this LC circuit?

I'm trying to build the LC oscillator show on the bottom of this page for some school project and I'm having a bit of problems translating the theoretical circuit into a real-world one. Here's the ...