| The Power Grid! |
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| • | The 60 Hz (50 Hz
in many other countries) is a |
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| major source of
RFI |
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| • | 50/60 Hz easily
filtered but harmonics are not. |
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| • | Harmonics to a
few kHz |
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| • | New DSP filters
have been very successful at |
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| generating comb
filters to remove power grid |
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| RFI with minimum
distortion of desired signals |
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