Hi, I came across a fairly large mpp core. It is bright blue, 34mm size and the marking on it says A-548127-2 973c -2
It looks like this
A-548127-2 - CORE TOROID 125u 19x34x12
The perm is 125u
I found a calculator, to get 10u I only need 7.8 turns.
I am just wondering before I pull out my inductors in my amp if this is suitable to be use in a class D output.
It looks like this
A-548127-2 - CORE TOROID 125u 19x34x12
The perm is 125u
I found a calculator, to get 10u I only need 7.8 turns.
I am just wondering before I pull out my inductors in my amp if this is suitable to be use in a class D output.
MPP is different from Sendust - heavier and more expensive (due to nickel content). In this application though I can't see any advantage of using MPP over Sendust.
@ChuckT - What are the current kinds of inductors in your amp?
@ChuckT - What are the current kinds of inductors in your amp?
Not sure, but the core color is red and doesn't get too hot. So I believe it is the common Micrometals type 2 toroid.
I want to a bit of tweaking to improve the sound and I have those on hand. Since I have seems somewhere that the MPP material is the best for class D, so I am just wondering.
I want to a bit of tweaking to improve the sound and I have those on hand. Since I have seems somewhere that the MPP material is the best for class D, so I am just wondering.
The red toroids are fairly decent - probably powered iron, lowish mu. So with Sendust or MPP you'll have fewer turns on the core to get the 10uH.
Improving the sound - if it were me, I'd get bucketloads of ceramic (X5R) caps across the supplies, right at the chip pins. They should clean up the PSU noise quite nicely.
Improving the sound - if it were me, I'd get bucketloads of ceramic (X5R) caps across the supplies, right at the chip pins. They should clean up the PSU noise quite nicely.
I have add/replace most of the caps already.
Maybe I can add a couple of smd near the pins or even piggyback those with larger value ceramics.
I am using the TAS5613 btw.
As for the MPP core, I thought high perm is not so good for class D, not sure about the reason. That's why I asked.
Maybe I can add a couple of smd near the pins or even piggyback those with larger value ceramics.
I am using the TAS5613 btw.
As for the MPP core, I thought high perm is not so good for class D, not sure about the reason. That's why I asked.
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