JPS5581327A - Power source device of flash device - Google Patents

Power source device of flash device

Info

Publication number
JPS5581327A
JPS5581327A JP15519578A JP15519578A JPS5581327A JP S5581327 A JPS5581327 A JP S5581327A JP 15519578 A JP15519578 A JP 15519578A JP 15519578 A JP15519578 A JP 15519578A JP S5581327 A JPS5581327 A JP S5581327A
Authority
JP
Japan
Prior art keywords
transformer
oscillation
power source
voltage
capacitor
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
JP15519578A
Other languages
Japanese (ja)
Inventor
Yoshiyuki Takematsu
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.)
Fuji Koeki Corp
Original Assignee
Fuji Koeki Corp
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 Fuji Koeki Corp filed Critical Fuji Koeki Corp
Priority to JP15519578A priority Critical patent/JPS5581327A/en
Priority to NL7901544A priority patent/NL7901544A/en
Priority to FR7905011A priority patent/FR2418603A1/en
Priority to DE19792907784 priority patent/DE2907784A1/en
Priority to GB7906977A priority patent/GB2019675B/en
Publication of JPS5581327A publication Critical patent/JPS5581327A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE:To make the breaking adjustment of an oscillation circuit for charging a main capacitor easy and sure by adjusting the voltage to be generated on the secondary side of an oscillation transformer by a variable resistance. CONSTITUTION:When a switch 3 is closed for the specified second time for the purpose of flash photography, a transistor 5 is conducted by way of the feedback coil 4b of an oscillation transformer 4 and the primary side of the transformer 4 oscillates according to the inductance of the transformer 4 and the capacity of the capacitor 7. Thereby, the oscillation voltage is generated in the secondary side of the transformer 4 and the main capacitor 17 for flash light emission is charged by the rectifying current by a diode 11, etc. In this case the high voltage current generated in the secondary coil 4c of the transformer 4 is bypassed to the minus side of the capacitor 17 through the variable resistance 13 provided to the bypass circuit, and this results in the decreased generating voltage of the coil 4b of the transformer, the stoppage of the oscillation by the transistor 5 and the cutoff of the power source supply to the oscillation circuit. Hence, when the resistance value of the resistance 13 is changed, the adjustment of the power source breaking timing may be readily adjusted.
JP15519578A 1978-02-28 1978-12-16 Power source device of flash device Pending JPS5581327A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP15519578A JPS5581327A (en) 1978-12-16 1978-12-16 Power source device of flash device
NL7901544A NL7901544A (en) 1978-02-28 1979-02-27 POWER SUPPLY DEVICE FOR ELECTRIC FLASH APPLIANCES.
FR7905011A FR2418603A1 (en) 1978-02-28 1979-02-27 POWER SUPPLY FOR AN ELECTRONIC FLASH
DE19792907784 DE2907784A1 (en) 1978-02-28 1979-02-28 POWER SUPPLY DEVICE FOR ELECTRIC FLASH UNITS
GB7906977A GB2019675B (en) 1978-02-28 1979-02-28 Power supply arrangement for an electric flash tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15519578A JPS5581327A (en) 1978-12-16 1978-12-16 Power source device of flash device

Publications (1)

Publication Number Publication Date
JPS5581327A true JPS5581327A (en) 1980-06-19

Family

ID=15600562

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15519578A Pending JPS5581327A (en) 1978-02-28 1978-12-16 Power source device of flash device

Country Status (1)

Country Link
JP (1) JPS5581327A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5740236A (en) * 1980-08-22 1982-03-05 Nippon Kogaku Kk <Nikon> Flash for camera

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5740236A (en) * 1980-08-22 1982-03-05 Nippon Kogaku Kk <Nikon> Flash for camera
JPH0381139B2 (en) * 1980-08-22 1991-12-27 Nippon Kogaku Kk

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