Title:
POWER SUPPLY, DISCHARGE LAMP LIGHTING DEVICE AND LIGHTING APPARATUS
Document Type and Number:
Japanese Patent JP3698226
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To improve efficiency by utilizing a switching element of low dielectric strength and small capacity and by reducing power loss through reduction of a DC voltage to be applied to an inverter apparatus.
SOLUTION: An impedance phase angle arg(Z) of a load circuit is set at 0°≤arg(Z)≤40° and a DC voltage VDC of a DC power supply apparatus 1 and a load voltage VL of regular operation of load 6 are set to have the relationship of 1.2VL≤VDC≤2.0VL. Thereby, the efficiency can be improved by reduction an inductance 7 of load circuit and power loss in the switching devices 3, 4.
Inventors:
Yuji Takahashi
Keiichi Shimizu
Masahiko Kamata
Keiichi Shimizu
Masahiko Kamata
Application Number:
JP11262797A
Publication Date:
September 21, 2005
Filing Date:
April 30, 1997
Export Citation:
Assignee:
Toshiba Lighting & Technology Corporation
International Classes:
H05B41/24; H02M7/48; (IPC1-7): H02M7/48; H05B41/24
Domestic Patent References:
| JP8331867A | ||||
| JP8031585A | ||||
| JP6225531A |
Attorney, Agent or Firm:
Junichi Izumi
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