JPS643999A - Discharge lamp lighting device - Google Patents

Discharge lamp lighting device

Info

Publication number
JPS643999A
JPS643999A JP15919787A JP15919787A JPS643999A JP S643999 A JPS643999 A JP S643999A JP 15919787 A JP15919787 A JP 15919787A JP 15919787 A JP15919787 A JP 15919787A JP S643999 A JPS643999 A JP S643999A
Authority
JP
Japan
Prior art keywords
starting
circuit
power source
signal generating
discharge lamp
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
JP15919787A
Other languages
Japanese (ja)
Inventor
Akira Yamamoto
Yoshimitsu Hiratomo
Satoshi Kubota
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 Electric Works Co Ltd
Original Assignee
Matsushita Electric Works 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 Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP15919787A priority Critical patent/JPS643999A/en
Publication of JPS643999A publication Critical patent/JPS643999A/en
Pending legal-status Critical Current

Links

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

PURPOSE:To upgrade starting performance so as to prevent cold cathode discharge of a discharge lamp at the starting by making a starting circuit in no operation until a power source voltage of an off signal generating circuit of a semiconductor switching element attains to a prescribed voltage after a power source is turned on. CONSTITUTION:A timer circuit 5 is disposed to make a starting circuit 4 operable for a fixed period after a power source voltage of an off signal generating circuit 3 attains to a prescribed voltage after the power source is turned on. Until the power source voltage Vcc of the off signal generating circuit 3 of a semiconductor switching element attains to the prescribed one, the starting circuit 4 is in no operation and so the semiconductor switch element is prevented from starting on the stage of no generation of the off signal. Hence, cold cathode discharge does not occur in a discharge lamp l at the time of its starting. After the power source voltage Vcc in the off signal generating circuit 3 of the semiconductor switching element attains to the prescribed voltage, the starting circuit 4 becomes on an operable state, so that starting performance of an inverter circuit is not deteriorated.
JP15919787A 1987-06-25 1987-06-25 Discharge lamp lighting device Pending JPS643999A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15919787A JPS643999A (en) 1987-06-25 1987-06-25 Discharge lamp lighting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15919787A JPS643999A (en) 1987-06-25 1987-06-25 Discharge lamp lighting device

Publications (1)

Publication Number Publication Date
JPS643999A true JPS643999A (en) 1989-01-09

Family

ID=15688444

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15919787A Pending JPS643999A (en) 1987-06-25 1987-06-25 Discharge lamp lighting device

Country Status (1)

Country Link
JP (1) JPS643999A (en)

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