JPS5477478A - Discharge lamp lighting apparatus - Google Patents

Discharge lamp lighting apparatus

Info

Publication number
JPS5477478A
JPS5477478A JP14537777A JP14537777A JPS5477478A JP S5477478 A JPS5477478 A JP S5477478A JP 14537777 A JP14537777 A JP 14537777A JP 14537777 A JP14537777 A JP 14537777A JP S5477478 A JPS5477478 A JP S5477478A
Authority
JP
Japan
Prior art keywords
discharge lamp
switching element
turned
capacitor
voltage
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
JP14537777A
Other languages
Japanese (ja)
Inventor
Koji Nishimura
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 JP14537777A priority Critical patent/JPS5477478A/en
Publication of JPS5477478A publication Critical patent/JPS5477478A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To provide a discharge lamp lighting apparatus, in which pulse voltage for giving a negative resistance to a discharge lamp is impressed to the discharge lamp after a switching element is turned ON, whereby timing when the switching element is turned OFF can be stabilized.
CONSTITUTION: When a switching element 5 is energized by control circuit 7, an oscillatory charging current is passed through a series circuit consisting of AC power source 1, inductance element 2, capacitor 3 and switching element 5. As the result, voltage-responsiveswitch 13 is turned ON, so that charge of capacitor 12 is passed via said voltage-responsive switch 13 to inductance element 2 and winding 14 wound around the same iron core as that of inductance element 2, and thus pulse voltage is generated in the inductance element 2. When this pulse voltage is impressed on discharge lamp 4, it immediately represents a negative resistance. Charge of capacitor 3 is discharged via discharge lamp 4 and switching element 5, whereupon switching element 5 is turned OFF.
COPYRIGHT: (C)1979,JPO&Japio
JP14537777A 1977-11-30 1977-11-30 Discharge lamp lighting apparatus Pending JPS5477478A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14537777A JPS5477478A (en) 1977-11-30 1977-11-30 Discharge lamp lighting apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14537777A JPS5477478A (en) 1977-11-30 1977-11-30 Discharge lamp lighting apparatus

Publications (1)

Publication Number Publication Date
JPS5477478A true JPS5477478A (en) 1979-06-20

Family

ID=15383816

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14537777A Pending JPS5477478A (en) 1977-11-30 1977-11-30 Discharge lamp lighting apparatus

Country Status (1)

Country Link
JP (1) JPS5477478A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55179032U (en) * 1979-06-11 1980-12-23

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55179032U (en) * 1979-06-11 1980-12-23

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