FAN CONTROL CIRCUIT

PROBLEM TO BE SOLVED: To provide a fan control circuit by which the generation of the abnormal noise of a blower by a ripple noise without following the increase of a cost can be prevented effectively. SOLUTION: In a circuit for giving the electric source voltage of a fan motor 12, after dividing it...

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Bibliographic Details
Main Authors IMAI IWAO, DAIMON YUJI
Format Patent
LanguageEnglish
Published 04.03.1997
Edition6
Subjects
ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING,OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODSSPACES OF VEHICLES
PERFORMING OPERATIONS
TRANSPORTING
VEHICLES IN GENERAL
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Summary:PROBLEM TO BE SOLVED: To provide a fan control circuit by which the generation of the abnormal noise of a blower by a ripple noise without following the increase of a cost can be prevented effectively. SOLUTION: In a circuit for giving the electric source voltage of a fan motor 12, after dividing it by two resistances R1, R2, to the reverse turn input terminal (-) of a calculation amplifier 16 on a latter part, a capaciter C1 for eliminating a high frequency noise is connected to the one resister R1 in a row and also a capaciter C2 having a capacity for filling the equation of R1×C1=R2×C2 is connected to the other resistance R2 in a row.
Bibliography:Application Number: JP19950218784