JPS5493875A - Discharge lamp lighting apparatus - Google Patents

Discharge lamp lighting apparatus

Info

Publication number
JPS5493875A
JPS5493875A JP16018477A JP16018477A JPS5493875A JP S5493875 A JPS5493875 A JP S5493875A JP 16018477 A JP16018477 A JP 16018477A JP 16018477 A JP16018477 A JP 16018477A JP S5493875 A JPS5493875 A JP S5493875A
Authority
JP
Japan
Prior art keywords
capacitor
inductance
lamp
discharge lamp
switching element
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.)
Granted
Application number
JP16018477A
Other languages
Japanese (ja)
Other versions
JPS6054760B2 (en
Inventor
Shigehisa Yoshida
Yukio Sugiyama
Kiyoyuki Abe
Tatsuhisa Mizuno
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 JP16018477A priority Critical patent/JPS6054760B2/en
Publication of JPS5493875A publication Critical patent/JPS5493875A/en
Publication of JPS6054760B2 publication Critical patent/JPS6054760B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)

Abstract

PURPOSE:To provide a discharge lamp lighting apparatus, in which a switching element connected in series with a capacitor or an inductance is connected to series circuit of inductance, capacitor and discharge lamp at the center between the inductance and the capacitor, whereby it is enabled to control the brightness of the lamp at a required level. CONSTITUTION:A discharge lamp 6 is in parallel with a series circuit of capacitor 3 and switching element 4, via capacitor 10, and a current limiting element 5 is constituted by the capacitor 10 and an inductance element 2. At the time when the discharge lamp is fully lighted, switching element 4 is on-off controlled once at each half cycle at a poper phase angle, and the lamp is fully lighted by the resonance voltage developed in the circuit constituted by the inductance and capacitor. On the other hand, at the time when the brightness of the lamp is controlled, a control signal is continuously fed from control circuit 9, and switching element 4 is kept in its ON-condition. Thus, the lamp is lighted only by the energy supplied from AC power source 1 and kept in its brightness-controlled condition.
JP16018477A 1977-12-30 1977-12-30 discharge lamp lighting device Expired JPS6054760B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16018477A JPS6054760B2 (en) 1977-12-30 1977-12-30 discharge lamp lighting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16018477A JPS6054760B2 (en) 1977-12-30 1977-12-30 discharge lamp lighting device

Publications (2)

Publication Number Publication Date
JPS5493875A true JPS5493875A (en) 1979-07-25
JPS6054760B2 JPS6054760B2 (en) 1985-12-02

Family

ID=15709633

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16018477A Expired JPS6054760B2 (en) 1977-12-30 1977-12-30 discharge lamp lighting device

Country Status (1)

Country Link
JP (1) JPS6054760B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62188541U (en) * 1986-04-25 1987-12-01
JPH0437243Y2 (en) * 1986-05-23 1992-09-02

Also Published As

Publication number Publication date
JPS6054760B2 (en) 1985-12-02

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