Skin Depth
$ \delta = \sqrt{ 2 \rho
Material |
Temp |
perm. |
resis. |
depth (m) at frequency |
|||||
|
K |
\mur |
\rho \Omega-m |
60 Hz |
400 Hz |
1 KHz |
5 KHz |
20 KHz |
200 KHz |
3% Si Transformer Steel |
300 |
700 |
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3% Si Transformer Steel |
700 |
700? |
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|
Aluminum |
300 |
1 |
|
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|
Aluminum |
700 |
1 |
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|
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|
Copper |
300 |
1 |
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Copper |
700 |
1 |
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