Title:
POWER SUPPLY DEVICE
Document Type and Number:
WIPO Patent Application WO/2012/098781
Kind Code:
A1
Abstract:
A power supply device comprising a converter, a rectifier circuit, a voltage cycle detection circuit, and a power supply cutoff signal output means. The converter converts an AC voltage inputted from an external power supply to a DC voltage, and outputs the DC voltage. The rectifier circuit rectifies the AC voltage inputted from the external power supply, and outputs a rectified waveform voltage. The voltage cycle detection circuit outputs a voltage cycle abnormality signal when the voltage cycle in which the rectified waveform voltage reaches a predetermined threshold value has been detected, and the voltage cycle has been detected to be longer than a predetermined cycle. The power supply cutoff signal output means outputs a power supply cutoff signal when the voltage cycle abnormality signal has been inputted.
Inventors:
TAKAHASHI HAJIME (JP)
Application Number:
PCT/JP2011/078573
Publication Date:
July 26, 2012
Filing Date:
December 09, 2011
Export Citation:
Assignee:
OLYMPUS CORP (JP)
TAKAHASHI HAJIME (JP)
TAKAHASHI HAJIME (JP)
International Classes:
H02H3/24; G01R19/165
Foreign References:
| JPH0968548A | 1997-03-11 | |||
| JPH0431772A | 1992-02-03 | |||
| JP2006340921A | 2006-12-21 |
Attorney, Agent or Firm:
ITOH SUSUMU (JP)
Susumu Ito (JP)
Susumu Ito (JP)
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