- #1
tim9000
- 867
- 17
Hi,
So if you wind a bifilar core in parallel and: connect it up in series, then it will have twice the N of if you connected them in parallel, i.e. The inductance is proportional to (2*N)^2 rather than just N^2, as connecting them up in parallel just increases the cross sectional area of the wire.
But what is the value of N if you wound two separate windings around a core, of different number of turns to each other, THEN parallel?
So for instance I wind 30 turns on a core, then another 60 turns and parallel these sets of windings together, what's my value of N?
I'll take a guess and say it's the average of both, N = 45 turns?
Please refer to the link if necessry:
http://en.wikipedia.org/wiki/Bifilar_coilP.S
I'm reading my book's transformer section and it says
"the windings should be bifilar wound in order to maximise the couplings and minimise the leakage inductances if there are no safety conciderations. In order to do this the wires should be twisted together. This is often carried out with multiple secondary windings to improve the cross-regulation."
Is this saying that you wind the primary and secondary at the same time? Otherwise what would be the point in
Thanks
So if you wind a bifilar core in parallel and: connect it up in series, then it will have twice the N of if you connected them in parallel, i.e. The inductance is proportional to (2*N)^2 rather than just N^2, as connecting them up in parallel just increases the cross sectional area of the wire.
But what is the value of N if you wound two separate windings around a core, of different number of turns to each other, THEN parallel?
So for instance I wind 30 turns on a core, then another 60 turns and parallel these sets of windings together, what's my value of N?
I'll take a guess and say it's the average of both, N = 45 turns?
Please refer to the link if necessry:
http://en.wikipedia.org/wiki/Bifilar_coilP.S
I'm reading my book's transformer section and it says
"the windings should be bifilar wound in order to maximise the couplings and minimise the leakage inductances if there are no safety conciderations. In order to do this the wires should be twisted together. This is often carried out with multiple secondary windings to improve the cross-regulation."
Is this saying that you wind the primary and secondary at the same time? Otherwise what would be the point in
- parallel-wound, series connected?
Thanks