JPS5373884A - System for detecting malfunction of discharge lamp - Google Patents

System for detecting malfunction of discharge lamp

Info

Publication number
JPS5373884A
JPS5373884A JP15048176A JP15048176A JPS5373884A JP S5373884 A JPS5373884 A JP S5373884A JP 15048176 A JP15048176 A JP 15048176A JP 15048176 A JP15048176 A JP 15048176A JP S5373884 A JPS5373884 A JP S5373884A
Authority
JP
Japan
Prior art keywords
discharge tube
discharge lamp
detecting malfunction
circuit
detection
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
JP15048176A
Other languages
Japanese (ja)
Other versions
JPS5737119B2 (en
Inventor
Yasuhito Okawa
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 JP15048176A priority Critical patent/JPS5373884A/en
Publication of JPS5373884A publication Critical patent/JPS5373884A/en
Publication of JPS5737119B2 publication Critical patent/JPS5737119B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Audible And Visible Signals (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)

Abstract

PURPOSE:To permit ready detection of the display state of the discharge tube and also permit detection of flicker due to deterioration of the discharge tube itself by using an exclusive AND circuit taking the AND of an output signal of a discharge tube voltage converter circuit receiving the discharge tube voltage and a drive signal to a drive circuit.
JP15048176A 1976-12-14 1976-12-14 System for detecting malfunction of discharge lamp Granted JPS5373884A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15048176A JPS5373884A (en) 1976-12-14 1976-12-14 System for detecting malfunction of discharge lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15048176A JPS5373884A (en) 1976-12-14 1976-12-14 System for detecting malfunction of discharge lamp

Publications (2)

Publication Number Publication Date
JPS5373884A true JPS5373884A (en) 1978-06-30
JPS5737119B2 JPS5737119B2 (en) 1982-08-07

Family

ID=15497817

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15048176A Granted JPS5373884A (en) 1976-12-14 1976-12-14 System for detecting malfunction of discharge lamp

Country Status (1)

Country Link
JP (1) JPS5373884A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016008996A (en) * 2014-06-23 2016-01-18 スタンレー電気株式会社 Strobe device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016008996A (en) * 2014-06-23 2016-01-18 スタンレー電気株式会社 Strobe device

Also Published As

Publication number Publication date
JPS5737119B2 (en) 1982-08-07

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