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Size: 1099
Comment:
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Size: 1103
Comment:
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| Deletions are marked like this. | Additions are marked like this. |
| Line 4: | Line 4: |
| $ \delta = \sqrt{ 2 \rho / \omega \mu_r \mu_0 } $, $ 2 / \mu_0 $ = 1.59e6 m/H | $ \delta = \sqrt{ 2 \rho / \omega \mu_r \mu_0 } $ . . . . . $ 2 / \mu_0 $ = 1.59e6 m/H |
| Line 7: | Line 7: |
| || || K || $\mu_r$,,r,, || $\rho$ $\Omega$-m || 60 Hz || 400 Hz || 1 KHz || 5 KHz || 20 KHz || 200 KHz || | || || K || $\mu_r$ || $\rho$ $\Omega$-m || 60 Hz || 400 Hz || 1 KHz || 5 KHz || 20 KHz || 200 KHz || |
Skin Depth
\delta = \sqrt{ 2 \rho / \omega \mu_r \mu_0 } . . . . . 2 / \mu_0 = 1.59e6 m/H
Material |
Temp |
perm. |
resis. |
depth (m) at frequency |
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|
K |
\mu_r |
\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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Copper |
300 |
1 |
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Copper |
700 |
1 |
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