DE2747416C2 - - Google Patents

Info

Publication number
DE2747416C2
DE2747416C2 DE2747416A DE2747416A DE2747416C2 DE 2747416 C2 DE2747416 C2 DE 2747416C2 DE 2747416 A DE2747416 A DE 2747416A DE 2747416 A DE2747416 A DE 2747416A DE 2747416 C2 DE2747416 C2 DE 2747416C2
Authority
DE
Germany
Prior art keywords
voltage
transistor
capacitor
converter
switched
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.)
Expired
Application number
DE2747416A
Other languages
German (de)
English (en)
Other versions
DE2747416A1 (de
Inventor
George Couper Chelmsford Mass. Us Harrison
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.)
Polaroid Corp
Original Assignee
Polaroid 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 Polaroid Corp filed Critical Polaroid Corp
Publication of DE2747416A1 publication Critical patent/DE2747416A1/de
Application granted granted Critical
Publication of DE2747416C2 publication Critical patent/DE2747416C2/de
Granted 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

Landscapes

  • Dc-Dc Converters (AREA)
  • Stroboscope Apparatuses (AREA)
  • Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
DE19772747416 1976-11-19 1977-10-21 Elektronenblitzgeraet Granted DE2747416A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/743,115 US4068151A (en) 1976-11-19 1976-11-19 Regulated strobe with hysteresis

Publications (2)

Publication Number Publication Date
DE2747416A1 DE2747416A1 (de) 1978-05-24
DE2747416C2 true DE2747416C2 (OSRAM) 1989-07-13

Family

ID=24987573

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19772747416 Granted DE2747416A1 (de) 1976-11-19 1977-10-21 Elektronenblitzgeraet

Country Status (6)

Country Link
US (1) US4068151A (OSRAM)
JP (1) JPS5364517A (OSRAM)
CA (1) CA1064096A (OSRAM)
DE (1) DE2747416A1 (OSRAM)
FR (1) FR2371815A1 (OSRAM)
GB (1) GB1586087A (OSRAM)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4162836A (en) * 1978-06-21 1979-07-31 Polaroid Corporation Electronic flash inhibit arrangement
US4156565A (en) * 1978-03-23 1979-05-29 Polaroid Corporation Control system for flash-illuminated automatic focusing camera
USRE30534E (en) * 1979-10-17 1981-03-03 Polaroid Corporation Electronic flash inhibit arrangement
US4451772A (en) * 1982-09-09 1984-05-29 Eastman Kodak Company Passive clamp for on/off control of a capacitor charger
US4464608A (en) * 1982-09-13 1984-08-07 Warner Lambert Technologies, Inc. Circuit for controlling optical apparatus such as an ophthalmoscope
NL8502338A (nl) * 1985-08-26 1987-03-16 Philips Nv Geschakelde voedingsspanningsschakeling met twee toestanden.
US4754389A (en) * 1986-06-04 1988-06-28 Eastman Kodak Company Voltage regulating circuitry for a DC to DC converter
US5028861A (en) * 1989-05-24 1991-07-02 Motorola, Inc. Strobed DC-DC converter with current regulation
US5285779A (en) * 1992-03-27 1994-02-15 Hewlett-Packard Company Method and apparatus for a cardiac defibrillator high voltage charging circuit

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1069706B (OSRAM) * 1959-11-26
US3012181A (en) * 1958-12-29 1961-12-05 Gen Electric Transistor low drain converter
US3316445A (en) * 1963-04-26 1967-04-25 Rca Corp Transistorized power supply for a storage capacitor with a regulating feedback control
JPS5419778B1 (OSRAM) * 1971-06-18 1979-07-18
FR2142735B1 (OSRAM) * 1971-06-24 1973-06-29 West Electric Co
US3822393A (en) * 1972-10-11 1974-07-02 Berkey Photo Inc Electronic strobe
US3863128A (en) * 1973-07-30 1975-01-28 Honeywell Inc Voltage monitoring controlling and protecting apparatus employing programmable unijunction transistor
DE2457664C2 (de) * 1974-12-06 1985-04-04 Robert Bosch Gmbh, 7000 Stuttgart Elektrische Schaltungsanordnung zur Erzeugung einer stabilen Ausgangsspannung
US3962601A (en) * 1975-02-18 1976-06-08 Stanley Wrzesinski Zero crossing relay controlled circuit for high power discharge devices

Also Published As

Publication number Publication date
DE2747416A1 (de) 1978-05-24
JPS6237770B2 (OSRAM) 1987-08-14
US4068151A (en) 1978-01-10
FR2371815B1 (OSRAM) 1983-07-08
GB1586087A (en) 1981-03-18
FR2371815A1 (fr) 1978-06-16
JPS5364517A (en) 1978-06-09
CA1064096A (en) 1979-10-09

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee