5
votes
3answers
213 views

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 ...
7
votes
2answers
249 views

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} > ...
4
votes
2answers
927 views

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 ...
2
votes
4answers
595 views

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 ...
3
votes
1answer
71 views

What is the most available hitemp superconductor for samples and study?

I could only find one named Amperium on the web, but not on the eBay or any little shops. It is very interesting material with conductivity 40 times better than copper. Is it possible to buy anywhere ...
4
votes
3answers
317 views

Creating a coupled inductor with two discrete inductors

Is it possible to create a coupled inductor (with high coupling coefficient) by just placing two inductors very close to each other on the PCB? (Even as far as placing them on top of each other.)