专利名称：Circuit configuration for fan regulation发明人：Peter Busch申请号：US10768457申请日：20040130公开号：US07000848B2公开日：20060221
专利附图：
摘要：A fan regulation circuit configuration includes an input receiving an input voltage(proportional to fan current and forms a first comparison voltage), a low-pass filter(filters input voltage and a filter output voltage is tapped off as second comparisonvoltage), a first comparison device for commutation identification (outputs signal
indicating a commutation if value of one of the comparison voltages multiplied by firstfactor is greater than the other comparison voltage), and a regulator (outputs a controlvoltage dependent upon identified commutation pulses). The circuit has self-adjustingsensitivity adaptation and a second comparison device outputting a signal if the value ofone of the comparison voltages multiplied by a second factor is greater than the othercomparison voltage, the second factor being less than the first factor. A control devicedecreases the first and second factors in the event of an output signal of the secondcomparison device being received to reduce the sensitivity of the commutationidentification.
申请人：Peter Busch
地址：Augsburg DE
国籍：DE
代理人：Laurence A. Greenberg,Werner H. Stemer,Ralph E. Locher
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