Low power consumption accurate power supply overvoltage detection

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9329561
APP PUB NO 20140254210A1
SERIAL NO

14188508

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Abstract

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The power supply apparatus includes a transformer having a primary and secondary sides, a first line and a second line to which an AC voltage is input from an AC power supply, a rectifying and smoothing unit that rectifies and smoothes the AC voltage, a shut-off unit provided between the first line and the rectifying and smoothing unit, a switching element that switches a current from the rectifying and smoothing unit to the primary side of the transformer, a first overvoltage detection unit that outputs a voltage corresponding to the AC voltage, a second overvoltage detection unit that outputs an overvoltage detection signal; and a control unit that controls the shut-off unit to shut off the input of the AC voltage.

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Patent Owner(s)

Patent OwnerAddress
CANON KABUSHIKI KAISHA30-2 SHIMOMARUKO 3-CHOME OHTA-KU TOKYO 146-8501

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hayasaki, Minoru Mishima, JP 46 472
Kawazu, Takao Susono, JP 14 474
Mano, Hiroshi Numazu, JP 101 2247
Nakajima, Nozomu Kawasaki, JP 20 130
Nakata, Yasuhiro Mishima, JP 29 402

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