Title:
LOAD CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2012/014020
Kind Code:
A1
Abstract:
Provided is a two-wire load control device which eliminates load malfunctioning, such as erroneous emission of an LED bulb, due to a leak current, even in the case where loads, such as the LED bulb, not taking countermeasures against noise are connected.
A two-wire load control device is connected in series between a commercial power supply and a load, and an off-power supply unit for ensuring an inner power supply at the time of turning off the load is provided with a plurality of capacitors, which are switched to be connected in series or parallel, corresponding to the level of an input voltage. The control device makes the capacitors repeat charging and discharging, and power discharged from the capacitors is used as the inner power supply, thereby reducing standby power requirement of the load control device at the time of turning off the load.
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Inventors:
HIGASHIHAMA HIROTADA (JP)
SAITOU YU (JP)
SAITOU YU (JP)
Application Number:
PCT/IB2011/000373
Publication Date:
February 02, 2012
Filing Date:
February 24, 2011
Export Citation:
Assignee:
PANASONIC CORP (JP)
HIGASHIHAMA HIROTADA (JP)
SAITOU YU (JP)
HIGASHIHAMA HIROTADA (JP)
SAITOU YU (JP)
International Classes:
G05F1/455; H05B37/02; H03K17/725; H05B44/00
Domestic Patent References:
| WO2010020855A1 | 2010-02-25 |
Foreign References:
| JP2000133473A | 2000-05-12 | |||
| JP2006033497A | 2006-02-02 | |||
| JP2008097535A | 2008-04-24 |
Attorney, Agent or Firm:
FIRSTLAW LEE & KO (KR)
The first 廣 place Patent Law people (KR)
The first 廣 place Patent Law people (KR)
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