Title:
【発明の名称】ガス放電ランプを動作させる電力回路
Document Type and Number:
Japanese Patent JP2593593
Kind Code:
B2
Abstract:
A ballast circuit (10) operates a metal halide lamp (12) by applying DC excitation during its start, glow and run modes. The type and values of the circuit components of the ballast circuit are selected to provide automatic, sequential and desired transfer functions as the impedance value of the metal halide lamp transitions from its value occurring during the start, glow and run modes of operation. The ballast circuit has an input stage (14) that is easily adapted to present a high power factor to the AC power source (20) supplying the metal halide lamp. Further, the ballast circuit generates a signal for more easily starting the lamp and having a relatively high DC level upon which are developed pulse signals.
Inventors:
Louis Robert Nerone
Michael Matthew Sishin
Michael Martin Minark Zick
Michael Matthew Sishin
Michael Martin Minark Zick
Application Number:
JP9497191A
Publication Date:
March 26, 1997
Filing Date:
April 02, 1991
Export Citation:
Assignee:
GENERAL ELECTRIC COMPANY
International Classes:
H05B41/231; D01G31/00; H05B41/18; H05B41/282; H05B41/288; H05B41/38; (IPC1-7): H05B41/18; H05B41/18; H05B41/29
Domestic Patent References:
| JP6293899A | ||||
| JP61110997A | ||||
| JP6164099A | ||||
| JP6132398A | ||||
| JP1283793A | ||||
| JP6288295A | ||||
| JP6062100A | ||||
| JP5765696A | ||||
| JP5248789U | ||||
| JP5323632B2 |
Attorney, Agent or Firm:
Tokunji Ikunuma