Method for detecting communication impulses of a fan motor and circuit arrangement for carrying out said method
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United States of America Patent
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Aug 15, 2006
Issued Date -
N/A
app pub date -
Nov 30, 2004
filing date -
May 31, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method for detecting commutation pulses of a fan motor with continuous measurement and storage of voltage values that are proportional to the fan current within predetermined time intervals. The measured voltage values are continuously evaluated by comparing two measured values that were obtained at different times. A result signal is outputted if the deviation between the compared measured values fulfills a predetermined constraint.
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