JPS55155335A - Automatic dimming strobe device - Google Patents

Automatic dimming strobe device

Info

Publication number
JPS55155335A
JPS55155335A JP6344279A JP6344279A JPS55155335A JP S55155335 A JPS55155335 A JP S55155335A JP 6344279 A JP6344279 A JP 6344279A JP 6344279 A JP6344279 A JP 6344279A JP S55155335 A JPS55155335 A JP S55155335A
Authority
JP
Japan
Prior art keywords
time
capacitor
commutation
charging
current
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
JP6344279A
Other languages
Japanese (ja)
Inventor
Takashi Tsukatani
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.)
Olympus Corp
Original Assignee
Olympus Optical 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 Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Priority to JP6344279A priority Critical patent/JPS55155335A/en
Publication of JPS55155335A publication Critical patent/JPS55155335A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE:To make charging of a commutation condenser higher in speed, shorten the automatically dimmable light emission intervals and prevent overexposure by connecting a transistor and current control elements to both ends of a main thyristor and charging the commutation condenser. CONSTITUTION:At the time when a main capacitor 3 is charged by an AC electric power source 1, a commutation capacitor 15 is also charged by way of a resistance 18, transistor (TR) 6 and current control element 9. As a result of this, the charging time of the capacitor 15 may be shortened. During the time from the push of a release button until the time t1, the discharge current of an electric dischage tube 5 flows through the TR6 and element 9, by which the peak of the current is limited. At the time t1, the main thyristor 7 goes ON and the discharge current increases sharply. At the close-up taking, the light emission stop signal is generated from the circuit 20 earlier than the time t1 and the control circuit 8 turns the TR6 OFF, thus the emission of light by the commutation capacitor 15 is obviated.
JP6344279A 1979-05-23 1979-05-23 Automatic dimming strobe device Pending JPS55155335A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6344279A JPS55155335A (en) 1979-05-23 1979-05-23 Automatic dimming strobe device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6344279A JPS55155335A (en) 1979-05-23 1979-05-23 Automatic dimming strobe device

Publications (1)

Publication Number Publication Date
JPS55155335A true JPS55155335A (en) 1980-12-03

Family

ID=13229366

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6344279A Pending JPS55155335A (en) 1979-05-23 1979-05-23 Automatic dimming strobe device

Country Status (1)

Country Link
JP (1) JPS55155335A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61135331U (en) * 1985-02-12 1986-08-23

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61135331U (en) * 1985-02-12 1986-08-23
JPH05899Y2 (en) * 1985-02-12 1993-01-12

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