JPS55124127A - Light quantity control flash emitting device - Google Patents

Light quantity control flash emitting device

Info

Publication number
JPS55124127A
JPS55124127A JP3094279A JP3094279A JPS55124127A JP S55124127 A JPS55124127 A JP S55124127A JP 3094279 A JP3094279 A JP 3094279A JP 3094279 A JP3094279 A JP 3094279A JP S55124127 A JPS55124127 A JP S55124127A
Authority
JP
Japan
Prior art keywords
lamp
switching element
circuit
dimming
discharge
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
JP3094279A
Other languages
Japanese (ja)
Other versions
JPS5911090B2 (en
Inventor
Yasuo Nakayama
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.)
Morris Photo Industry Co Ltd
Original Assignee
Morris Photo Industry 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 Morris Photo Industry Co Ltd filed Critical Morris Photo Industry Co Ltd
Priority to JP54030942A priority Critical patent/JPS5911090B2/en
Publication of JPS55124127A publication Critical patent/JPS55124127A/en
Publication of JPS5911090B2 publication Critical patent/JPS5911090B2/en
Expired legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE:To make possible giving an alarm to the user by producing light or sound by the charge remained in the commutation capacitor of the circuit when the flash emission light quantity of a flash lamp was not dimmed. CONSTITUTION:A trigger circuit TG is operated by the discharge signal sig and a switching element SW1 closes the circuit, causing a discharge lamp Xe to discharge. A switching element SW2 is conducted by the dimming signal from a dimming circuit IC and the charging charge of a commutation capacitor C0 is applied as reverse bias to the switching element SW1, by which the lamp is forcefully put out. The potential of A of this time is lower than the potential of B and therefore a warning lamp GL does not light. When the lamp Xe discharges and no dimming was accomplished, the switching element SW2 is not conducted and the charge is held accumulated at the first polarity in the commutation capacitor C0 and therefore the warning lamp is lighted. It is also possible to use a sound producer in place of the warning lamp.
JP54030942A 1979-03-16 1979-03-16 Light amount control flash generator Expired JPS5911090B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54030942A JPS5911090B2 (en) 1979-03-16 1979-03-16 Light amount control flash generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54030942A JPS5911090B2 (en) 1979-03-16 1979-03-16 Light amount control flash generator

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP58205460A Division JPS6083922A (en) 1983-10-31 1983-10-31 Flash light emitting device controlling quantity of light

Publications (2)

Publication Number Publication Date
JPS55124127A true JPS55124127A (en) 1980-09-25
JPS5911090B2 JPS5911090B2 (en) 1984-03-13

Family

ID=12317725

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54030942A Expired JPS5911090B2 (en) 1979-03-16 1979-03-16 Light amount control flash generator

Country Status (1)

Country Link
JP (1) JPS5911090B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03115590U (en) * 1990-03-13 1991-11-29

Also Published As

Publication number Publication date
JPS5911090B2 (en) 1984-03-13

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