SOLENOID VALVE DRIVE CONTROL APPARATUS AND METHOD FOR DRIVING A SOLENOID VALVE

Number of patents in Portfolio can not be more than 2000

United States of America Patent

APP PUB NO 20090237856A1
SERIAL NO

12366152

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A solenoid valve drive control apparatus includes a MOSFET connected in series with the drive coil of a solenoid valve, a varistor connected in parallel with the drive coil, and a diode connected in parallel with the drive coil and the MOSFET. Due to the MOSFET being turned OFF, because the varistor immediately becomes conductive when a back EMF is generated in the drive coil, an electric current caused by the back EMF flows through a closed circuit constituted by the drive coil and the varistor.

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Patent Owner(s)

Patent OwnerAddress
SMC KABUSHIKI KAISHA16-4 SHIMBASHI 1-CHOME MINATO-KU TOKYO 105-8659

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
ISHITSUKA, Nobuyuki Satte-shi , JP 6 123
Morikawa, Fumio Misato-shi , JP 16 332

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  • 5 Citation Count
  • H01H Class
  • 5.60 % this patent is cited more than
  • 16 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges33366984516662194301 - 1011 - 2021 - 3031 - 4041 - 5051 - 6061 - 7071 - 8081 - 9091 - 100100 +0100200300400255075125150175225250275325350375

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