Title:
照明用電源装置および保持電流の制御方法
Document Type and Number:
Japanese Patent JP5708371
Kind Code:
B2
Abstract:
A lighting power supply device receives a voltage converted from an alternating current to a direct current by a rectifying circuit rectifying the alternating current whose phase is controlled by a phase control type dimmer, and generates and outputs a direct current voltage/current to be supplied to a load. The lighting power supply device includes: a control circuit, and the control circuit gradually decreases a current drawn from the rectifying circuit from a predetermined current value set in advance, determines a current value immediately before detecting a malfunction of the phase control type dimmer as a drawn current value, and performs current control so as to maintain the determined current value.
Inventors:
Takashi Okubo
Taro Isogai
Taro Isogai
Application Number:
JP2011184280A
Publication Date:
April 30, 2015
Filing Date:
August 26, 2011
Export Citation:
Assignee:
MITSUMI ELECTRIC CO.,LTD.
International Classes:
H05B37/02; H05B44/00
Domestic Patent References:
| JP2006319172A | ||||
| JP56072366A | ||||
| JP2006139755A | ||||
| JP2010218811A |
Attorney, Agent or Firm:
Hiroshi Arafune
Yoshio Arafune
Yoshio Arafune