JPS5767919A - Electronic flash device - Google Patents

Electronic flash device

Info

Publication number
JPS5767919A
JPS5767919A JP14501780A JP14501780A JPS5767919A JP S5767919 A JPS5767919 A JP S5767919A JP 14501780 A JP14501780 A JP 14501780A JP 14501780 A JP14501780 A JP 14501780A JP S5767919 A JPS5767919 A JP S5767919A
Authority
JP
Japan
Prior art keywords
circuit
power supply
waste
lapse
control system
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
JP14501780A
Other languages
Japanese (ja)
Inventor
Tetsuo Yamaoka
Hiroshi Iwata
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.)
WEST DENKI KK
West Electric Co Ltd
Original Assignee
WEST DENKI KK
West Electric 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 WEST DENKI KK, West Electric Co Ltd filed Critical WEST DENKI KK
Priority to JP14501780A priority Critical patent/JPS5767919A/en
Priority to US06/311,611 priority patent/US4479076A/en
Publication of JPS5767919A publication Critical patent/JPS5767919A/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
    • H05B41/32—Circuit arrangements in which the lamp is fed by pulses, e.g. flash lamp for single flash operation
    • H05B41/325—Circuit arrangements in which the lamp is fed by pulses, e.g. flash lamp for single flash operation by measuring the incident light

Landscapes

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

Abstract

PURPOSE:To avoid the waste of a power supply, by supplying the power for the start of a DC-DC converter circuit as well as to a prescribed control system and then discontinuing the power supply to these above-mentioned converter circuit and the control system after the lapse of a desired time. CONSTITUTION:When a start switch 16 of a power supply circuit 22 is applied, a power supply waste preventing circuit 13 starts the working of a DC-DC converter circuit 2 and at the same time supplies a power supply 1 to an ultra-low frequency oscillating circuit 14 functioning as a timer, a tank circuit 26, etc. Then the power supply 1 is discontinued to the circuit 2 after the lapse of a prescribed period of time that is set by the circuit 14. At the same time, the operation of the circuit 2 is focibly stopped. In such way, the waste of the power supply 1 can be assuredly prevented with extremely simple constitution of circuit and without using any nagnet.
JP14501780A 1980-10-15 1980-10-15 Electronic flash device Pending JPS5767919A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP14501780A JPS5767919A (en) 1980-10-15 1980-10-15 Electronic flash device
US06/311,611 US4479076A (en) 1980-10-15 1981-10-15 Power saving device for electronic flash

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14501780A JPS5767919A (en) 1980-10-15 1980-10-15 Electronic flash device

Publications (1)

Publication Number Publication Date
JPS5767919A true JPS5767919A (en) 1982-04-24

Family

ID=15375501

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14501780A Pending JPS5767919A (en) 1980-10-15 1980-10-15 Electronic flash device

Country Status (1)

Country Link
JP (1) JPS5767919A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4876528A (en) * 1972-01-17 1973-10-15
JPS5220826A (en) * 1975-08-11 1977-02-17 Secoh Giken Inc Electro-flash device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4876528A (en) * 1972-01-17 1973-10-15
JPS5220826A (en) * 1975-08-11 1977-02-17 Secoh Giken Inc Electro-flash device

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