EMI energy absorber
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United States of America Patent
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Aug 14, 2001
Grant Date -
N/A
app pub date -
May 5, 1999
filing date -
May 5, 1999
priority date (Note) -
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status (Latency Note)
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Abstract
An EMI energy absorber for use with an electrical circuit, such as a hot wire air flow sensor, which has at least one electrical element which exhibits antenna characteristics at a predetermined frequency range for the EMI. The energy absorber includes a component, such as a ferrite bead, which is electrically connected in series with the element of the electrical circuit. This component exhibits a resistance which varies as a function of frequency and has a maximum resistance within the predetermined frequency range. Thus, the component functions to absorb the EMI and dissipate the EMI as heat.
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