HK4780A - A circuit for commutating a thyristor in an electronic flash unit - Google Patents
A circuit for commutating a thyristor in an electronic flash unitInfo
- Publication number
- HK4780A HK4780A HK47/80A HK4780A HK4780A HK 4780 A HK4780 A HK 4780A HK 47/80 A HK47/80 A HK 47/80A HK 4780 A HK4780 A HK 4780A HK 4780 A HK4780 A HK 4780A
- Authority
- HK
- Hong Kong
- Prior art keywords
- commutating
- thyristor
- circuit
- flash unit
- electronic flash
- Prior art date
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
-
- 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
- H05B41/325—Circuit arrangements in which the lamp is fed by pulses, e.g. flash lamp for single flash operation by measuring the incident light
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19732339119 DE2339119A1 (de) | 1973-08-02 | 1973-08-02 | Schaltung zum loeschen eines thyristors |
DE19732339094 DE2339094B2 (de) | 1973-08-02 | 1973-08-02 | Elektronenblitzgeraet mit einer automatischen lichtmess- und blitzbegrenzungseinrichtung |
Publications (1)
Publication Number | Publication Date |
---|---|
HK4780A true HK4780A (en) | 1980-02-15 |
Family
ID=25765590
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
HK47/80A HK4780A (en) | 1973-08-02 | 1980-02-07 | A circuit for commutating a thyristor in an electronic flash unit |
Country Status (10)
Country | Link |
---|---|
US (1) | US4074171A (xx) |
JP (1) | JPS5063917A (xx) |
BE (1) | BE818343A (xx) |
CA (1) | CA1042063A (xx) |
CH (1) | CH577184A5 (xx) |
ES (1) | ES428801A1 (xx) |
FR (1) | FR2239694B3 (xx) |
GB (1) | GB1458429A (xx) |
HK (1) | HK4780A (xx) |
NL (1) | NL7410082A (xx) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB8611039D0 (en) * | 1986-05-06 | 2002-12-11 | British Aerospace | Generation of electromagnetic radiation |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3332074A (en) * | 1963-12-31 | 1967-07-18 | Westinghouse Electric Corp | Input signal sensing apparatus |
DE2014923C3 (de) * | 1970-03-26 | 1980-04-10 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Schaltungsanordnung zur Sperrung eines mit einer Last in Serie liegenden Thyristors |
US3953783A (en) * | 1971-04-06 | 1976-04-27 | Environment/One Corporation | Low cast chopper inverter power supply and gating circuit therefor |
US3849703A (en) * | 1971-07-06 | 1974-11-19 | Shindengen Electric Mfg | Electronic flash apparatus |
DE2152140C2 (de) * | 1971-10-20 | 1973-11-29 | Metz Apparatewerke, Inh. Paul Metz, 8510 Fuerth | Elektronenblitzgerät mit auto matischer Lichtregelung |
-
1974
- 1974-07-26 NL NL7410082A patent/NL7410082A/xx not_active Application Discontinuation
- 1974-07-26 CA CA205,736A patent/CA1042063A/en not_active Expired
- 1974-07-29 US US05/492,417 patent/US4074171A/en not_active Expired - Lifetime
- 1974-07-29 GB GB3331374A patent/GB1458429A/en not_active Expired
- 1974-07-30 CH CH1049474A patent/CH577184A5/xx not_active IP Right Cessation
- 1974-07-31 BE BE147163A patent/BE818343A/xx unknown
- 1974-07-31 ES ES428801A patent/ES428801A1/es not_active Expired
- 1974-08-02 FR FR7426928A patent/FR2239694B3/fr not_active Expired
- 1974-08-02 JP JP49088932A patent/JPS5063917A/ja active Pending
-
1980
- 1980-02-07 HK HK47/80A patent/HK4780A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
CH577184A5 (xx) | 1976-06-30 |
GB1458429A (en) | 1976-12-15 |
US4074171A (en) | 1978-02-14 |
CA1042063A (en) | 1978-11-07 |
FR2239694A1 (xx) | 1975-02-28 |
JPS5063917A (xx) | 1975-05-30 |
BE818343A (fr) | 1975-01-31 |
FR2239694B3 (xx) | 1977-06-03 |
ES428801A1 (es) | 1976-08-16 |
NL7410082A (nl) | 1975-02-04 |
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