Darn, I'm happy to see you here, CJ..
Jakob E.
Jakob E.
There are two things that happen when core saturates: distorted signal and shift of the boost/cut frequency.Sorry to resurrect this oldish thread but I decided to experiment a bit with winding my own inductors. I have plenty of questions but for now I'd like to ask what is the process/ technique for measuring the maximum level before the coil starts saturating....
FWIW, I have a couple of DMMs, function generators and scopes.
Thanks!
There are two things that happen when core saturates: distorted signal and shift of the boost/cut frequency.
You need a more inquisitive tool; I would suggest you use REW (free software) in conjunction with a computer and soundcard.
Definitely test the whole circuit in real conditions.Thanks abbey.
I use REW so that's not a problem. However, I'm still not sure what I'm supposed to do. Can I test just the coil by itself or it should be in the circuit?
It could be done that way, but you must design a test jig that submits the coil to the same constraints as when in circuit.For some reason I had the impression that using a function generator -> coil (+cap) -> oscilloscope would be easier but obviously I'm wrong...
4H with a An1000 core results in 2000 turns.
The available space is 72-73mm², according to specs. That gives a square area of 0.36mm² per turn.
The round wire takes about the same space than a square one, so you need to find a wire that has an overall diameter of 0.19mm or smaller.
Why do you want to put 4000 turns? That would make for 16H.
My chart suggests AWG33...Sorry Abbey, that was a typo. I did mean 2000 turns indeed. I'll amend the post.
So a a AWG=32 or higher wire should be sufficient... Thanks! I might go for 32 because I would wound this inductor by hand so it'll be probably easier to handle.
No difference. You'll have to watch the DC resistance.In regards to saturation levels does it make any difference what AWG I'll use or it totally depends on the core?
My chart suggests AWG33...
No difference. You'll have to watch the DC resistance.
When they're all in series, the order does not change anything.Thanks Abbey. Yes I'm aware of DCR. I ordered some cores and wire to experiment.
Since we are on that, one more question that might sound silly but in a LCR circuit, does the order of the components matter? LCR vs CLR if that makes sense. I believe it doesn't but I thought I'd ask in case I'm missing something... Again, thanks for all your help, much appreciated!
which ones?like the great sounding passive EQs employ?
N41 and N48 are more linear than N87. However, for an identical Al, the N87 core will have a longer gap, which will somewhat compensate.Ok then, can someone explain me the difference between N41 and N87 core assuming that AL is the same?
I know it is a different material but in terms of sound/ saturation level, etc.. is one preferred over the other?
I know indeed Thanks!You know what you need to do now...
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