JPS5518611A - Strobe circuit of camera - Google Patents

Strobe circuit of camera

Info

Publication number
JPS5518611A
JPS5518611A JP9080278A JP9080278A JPS5518611A JP S5518611 A JPS5518611 A JP S5518611A JP 9080278 A JP9080278 A JP 9080278A JP 9080278 A JP9080278 A JP 9080278A JP S5518611 A JPS5518611 A JP S5518611A
Authority
JP
Japan
Prior art keywords
strobe
transistor
oscillation
shutter
oscillation circuit
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
JP9080278A
Other languages
Japanese (ja)
Inventor
Tsutomu Hosono
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.)
Fujinon Corp
Original Assignee
Fuji Photo 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 Fuji Photo Optical Co Ltd filed Critical Fuji Photo Optical Co Ltd
Priority to JP9080278A priority Critical patent/JPS5518611A/en
Publication of JPS5518611A publication Critical patent/JPS5518611A/en
Pending legal-status Critical Current

Links

Landscapes

  • Stroboscope Apparatuses (AREA)

Abstract

PURPOSE: To achieve the reduction of power consumption by controlling the oscillation of the strobe oscillation circuit in the strobe circuit of a camera in which the power source for the strobe including the oscillation circuit is also used commonly for other loads with the difference of a semiconductor threshold level.
CONSTITUTION: A strobe oscillation circuit is constituted by a transistor Tr 1 of a high threshold level such as silicon transistor and a diode D1 of a low threshold level such as a germanium diode whose anode is connected to the base of said transistor Tr 1 and whose cathode is connected to one end of a shutter switch S1 is connected to said transistor. As a result, when a strobe main switch S2 is turned on for the strobe photography, the Tr 1 repeats switching and a main capacitor C3 is charged. When the shutter main switch S1 is turned ON by depressing the shutter button to supply power source E to a shutter control circuit 1, D1 is parallel connected between the base and emitter of Tr 1 and Tr 1 goes OFF to stop the oscillation of the oscillation circuit, thereby stopping charging to the capacitor C3.
COPYRIGHT: (C)1980,JPO&Japio
JP9080278A 1978-07-25 1978-07-25 Strobe circuit of camera Pending JPS5518611A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9080278A JPS5518611A (en) 1978-07-25 1978-07-25 Strobe circuit of camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9080278A JPS5518611A (en) 1978-07-25 1978-07-25 Strobe circuit of camera

Publications (1)

Publication Number Publication Date
JPS5518611A true JPS5518611A (en) 1980-02-08

Family

ID=14008712

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9080278A Pending JPS5518611A (en) 1978-07-25 1978-07-25 Strobe circuit of camera

Country Status (1)

Country Link
JP (1) JPS5518611A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57130827U (en) * 1981-02-06 1982-08-14
JPS60123172A (en) * 1983-12-06 1985-07-01 Canon Inc Image pickup device
JPS62179728U (en) * 1987-04-17 1987-11-14
JPH0386335U (en) * 1989-12-22 1991-08-30
JPH076142U (en) * 1993-06-30 1995-01-27 弘 本多 Wettable bag

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57130827U (en) * 1981-02-06 1982-08-14
JPS60123172A (en) * 1983-12-06 1985-07-01 Canon Inc Image pickup device
JPH0137071B2 (en) * 1983-12-06 1989-08-03 Canon Kk
JPS62179728U (en) * 1987-04-17 1987-11-14
JPH036897Y2 (en) * 1987-04-17 1991-02-21
JPH0386335U (en) * 1989-12-22 1991-08-30
JPH076142U (en) * 1993-06-30 1995-01-27 弘 本多 Wettable bag

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