JPS6430198A - Discharge lamp lighting device - Google Patents

Discharge lamp lighting device

Info

Publication number
JPS6430198A
JPS6430198A JP18399787A JP18399787A JPS6430198A JP S6430198 A JPS6430198 A JP S6430198A JP 18399787 A JP18399787 A JP 18399787A JP 18399787 A JP18399787 A JP 18399787A JP S6430198 A JPS6430198 A JP S6430198A
Authority
JP
Japan
Prior art keywords
electrode
discharge lamp
transformer
lamp
inverter circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP18399787A
Other languages
Japanese (ja)
Inventor
Mitsuharu Miyazaki
Masataka Ozawa
Kazutaka Koyama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP18399787A priority Critical patent/JPS6430198A/en
Publication of JPS6430198A publication Critical patent/JPS6430198A/en
Pending legal-status Critical Current

Links

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

PURPOSE:To seek to leng then the life of a lamp by providing the first inverter circuit connected to the power source and the second inverter circuit which connected one electrode of a discharge lamp to the primary side of an insulating transformer as a preheating circuit for the discharge lamp and the other electrode to the primary side. CONSTITUTION:A transistor 5 is turned on after a certain time from the turn-on of power source 1 and a discharge lamp 2 is lit by the output of the first inverter circuit 12. And when a transistor 52 in the second inverter circuit 54 is ON, current is supplied from the power source 1 to the primary side of an insulating transformer 53 and one electrode of the lamp 2, and voltage is generated on the secondary side of the transformer 53 and preheating current is supplied to the other electrode of the lamps 2. When the transistor is OFF, preheating current is supplied to one electrode of the lamp 2 by the energy saved in the primary side of the transformer 53 when it was ON and the other electrode is preheated by the voltage generated on the secondary side of the transformer 53. Hereby life extension becomes possible.
JP18399787A 1987-07-23 1987-07-23 Discharge lamp lighting device Pending JPS6430198A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18399787A JPS6430198A (en) 1987-07-23 1987-07-23 Discharge lamp lighting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18399787A JPS6430198A (en) 1987-07-23 1987-07-23 Discharge lamp lighting device

Publications (1)

Publication Number Publication Date
JPS6430198A true JPS6430198A (en) 1989-02-01

Family

ID=16145515

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18399787A Pending JPS6430198A (en) 1987-07-23 1987-07-23 Discharge lamp lighting device

Country Status (1)

Country Link
JP (1) JPS6430198A (en)

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