JPS5512929A - Charging voltage notifying device for electronic flashing equipment - Google Patents

Charging voltage notifying device for electronic flashing equipment

Info

Publication number
JPS5512929A
JPS5512929A JP8559278A JP8559278A JPS5512929A JP S5512929 A JPS5512929 A JP S5512929A JP 8559278 A JP8559278 A JP 8559278A JP 8559278 A JP8559278 A JP 8559278A JP S5512929 A JPS5512929 A JP S5512929A
Authority
JP
Japan
Prior art keywords
main capacitor
response
sound
charging voltage
transistor
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.)
Granted
Application number
JP8559278A
Other languages
Japanese (ja)
Other versions
JPS5927889B2 (en
Inventor
Shinji Hirata
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 Electric Co Ltd
Original Assignee
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 Electric Co Ltd filed Critical West Electric Co Ltd
Priority to JP53085592A priority Critical patent/JPS5927889B2/en
Publication of JPS5512929A publication Critical patent/JPS5512929A/en
Publication of JPS5927889B2 publication Critical patent/JPS5927889B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE:To confirm the brightness control operation by means of sound by generating the sound of pitch responsive to the charging state of a main capacitor. CONSTITUTION:The outputs of comparators 19-17 each having different standard voltage input in a notifying unit B are sequentially inverted in response to the charging state of a main capacitor 4 in a flashing circuit A to thereby conduct sequentially transistors 22-20 to thus cause a pulse generator 23 to generate pulses of different periods, which are applied through diodes 28-26 to the base of a transistor 29. Thus, the transistor 29 turns on and off in response to the output pulse period of the generator 23. Thus, a sound producing unit 30 produces sounds of different frequency in response to the charged state of the main capacitor to thereby notify the pitch by the stepwise charged voltage at the main capacitor.
JP53085592A 1978-07-12 1978-07-12 electronic flash device Expired JPS5927889B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53085592A JPS5927889B2 (en) 1978-07-12 1978-07-12 electronic flash device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53085592A JPS5927889B2 (en) 1978-07-12 1978-07-12 electronic flash device

Publications (2)

Publication Number Publication Date
JPS5512929A true JPS5512929A (en) 1980-01-29
JPS5927889B2 JPS5927889B2 (en) 1984-07-09

Family

ID=13863079

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53085592A Expired JPS5927889B2 (en) 1978-07-12 1978-07-12 electronic flash device

Country Status (1)

Country Link
JP (1) JPS5927889B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56144425A (en) * 1980-04-14 1981-11-10 Olympus Optical Co Ltd Electic charge displaying circuit of flash emitting device
JPS56147136A (en) * 1980-04-18 1981-11-14 Oki Electric Ind Co Ltd Strobe reporting circuit
JPS60187439A (en) * 1984-03-07 1985-09-24 Nippon Koki Kk Method for fixing metallic walls to each other

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56144425A (en) * 1980-04-14 1981-11-10 Olympus Optical Co Ltd Electic charge displaying circuit of flash emitting device
JPS56147136A (en) * 1980-04-18 1981-11-14 Oki Electric Ind Co Ltd Strobe reporting circuit
JPS60187439A (en) * 1984-03-07 1985-09-24 Nippon Koki Kk Method for fixing metallic walls to each other
JPH0454530B2 (en) * 1984-03-07 1992-08-31 Nippon Koki Kk

Also Published As

Publication number Publication date
JPS5927889B2 (en) 1984-07-09

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