Stopping noise reduction circuit for start motor using resistor

A stopping noise reduction circuit for a start motor comprises a battery generating a power supply to drive the start motor, a key switch for controlling an on/off of the power supply, a solenoid having a permanent magnet, P and H coils, and a movement contact to drive the start motor, and further c...

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Bibliographic Details
Main Authors AHN HYUNUL, PARK SOON-SIK, KIM JI-GON, KIM CHANG-IL
Format Patent
LanguageEnglish
Published 23.02.2006
Subjects
CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS
CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
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Summary:A stopping noise reduction circuit for a start motor comprises a battery generating a power supply to drive the start motor, a key switch for controlling an on/off of the power supply, a solenoid having a permanent magnet, P and H coils, and a movement contact to drive the start motor, and further comprises a B 1 terminal grounded inside the solenoid, an M 1 terminal connected to an M terminal of the start motor, and a resistor coupled with the B 1 or M 1 terminal. In the stopping noise reduction circuit, upon an off condition of the key switch, the movement contact of the solenoid is connected to the B 1 and M 1 terminals such that more induced current than an induced current flowing into the P and H coils, in a current induced by a rotator of the start motor, flows to ground via the resistor within a short flow time.
Bibliography:Application Number: US20050201011