JPS5726832A - Flash device capable of continuous flash emission - Google Patents

Flash device capable of continuous flash emission

Info

Publication number
JPS5726832A
JPS5726832A JP10151380A JP10151380A JPS5726832A JP S5726832 A JPS5726832 A JP S5726832A JP 10151380 A JP10151380 A JP 10151380A JP 10151380 A JP10151380 A JP 10151380A JP S5726832 A JPS5726832 A JP S5726832A
Authority
JP
Japan
Prior art keywords
flash
capacitor
circuit
thyristor
charging
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
JP10151380A
Other languages
Japanese (ja)
Inventor
Masanori Yamada
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP10151380A priority Critical patent/JPS5726832A/en
Publication of JPS5726832A publication Critical patent/JPS5726832A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/30—Circuit arrangements in which the lamp is fed by pulses, e.g. flash lamp
    • H05B41/34—Circuit arrangements in which the lamp is fed by pulses, e.g. flash lamp to provide a sequence of flashes

Abstract

PURPOSE:To continuously emit a flash without any hindrance, by swiftly charging a main capacitor by an oscillating circuit using the inductance, and also optionally setting a period up to flash discharge after charging the main capacitor, by a delaying circuit. CONSTITUTION:A capacitor 8 is charged swiftly through a large capacity capacitor 4 by an oscillating circuit which is formed by a main capacitor 8 and a series inductance 6. When the capacitor 8 attains to prescribed charging voltage, reverse bias voltage is applied to a thyristor 7. After a delay time of a delaying circuit which is formed by a Zener diode 11 becoming prescribed voltage, a capacitor 13 and a resistance 12, the thyristor 7 turns off completely, and a flash discharge tube 5 emits light in accordance with a start pulse of a pulse generating circuit 22. When this delay time which can be set optionally is set so as to correspond to the start pulse generating period of the circuit 22, the flash emission tube is always started after the thyristor 7 has been turned off completely, and a flash is continuously emitted without any hindrance.
JP10151380A 1980-07-24 1980-07-24 Flash device capable of continuous flash emission Pending JPS5726832A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10151380A JPS5726832A (en) 1980-07-24 1980-07-24 Flash device capable of continuous flash emission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10151380A JPS5726832A (en) 1980-07-24 1980-07-24 Flash device capable of continuous flash emission

Publications (1)

Publication Number Publication Date
JPS5726832A true JPS5726832A (en) 1982-02-13

Family

ID=14302627

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10151380A Pending JPS5726832A (en) 1980-07-24 1980-07-24 Flash device capable of continuous flash emission

Country Status (1)

Country Link
JP (1) JPS5726832A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS617174A (en) * 1984-06-22 1986-01-13 Toshiba Corp Selecting apparatus flat board material
JPS6361854U (en) * 1986-10-13 1988-04-23

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS617174A (en) * 1984-06-22 1986-01-13 Toshiba Corp Selecting apparatus flat board material
JPS6361854U (en) * 1986-10-13 1988-04-23

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