Title:
POWER SUPPLY DEVICE
Document Type and Number:
WIPO Patent Application WO/2014/125756
Kind Code:
A1
Abstract:
This power supply device (20, 20A, 20B, 20C, 20D, 20E) supplies DC power to a load (10), and is provided with a shunt resistor (Rs) connected directly to the low potential side of the load, a power supply control means (40) which controls the state of supplying power to the load depending on the amount of voltage drop occurring in the shunt resistor, a ground fault detector element (D, 50C, 50D, 50E) which is connected directly to the low potential side of the load and generates a voltage drop, and a limiting means (30) which, if the amount of voltage drop occurring when a detection current is passed through the ground fault detector element is less than a prescribed threshold value, assumes that a ground fault has occurred and limits power supply from the power supply means.
Inventors:
ENDO SUSUMU (JP)
Application Number:
PCT/JP2014/000073
Publication Date:
August 21, 2014
Filing Date:
January 10, 2014
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
H05B37/02; B60Q1/04; B60Q11/00; G01R31/02; H02H3/16; H02M3/00; H05B44/00
Foreign References:
| JP2012171612A | 2012-09-10 | |||
| JP2012122986A | 2012-06-28 | |||
| JP2004325382A | 2004-11-18 | |||
| JP2005267923A | 2005-09-29 |
Attorney, Agent or Firm:
KIN, Junhi (JP)
Gold Junki (JP)
Gold Junki (JP)
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