CH617316B5 - - Google Patents
Download PDFInfo
- Publication number
- CH617316B5 CH617316B5 CH619975A CH619975A CH617316B5 CH 617316 B5 CH617316 B5 CH 617316B5 CH 619975 A CH619975 A CH 619975A CH 619975 A CH619975 A CH 619975A CH 617316 B5 CH617316 B5 CH 617316B5
- Authority
- CH
- Switzerland
- Prior art keywords
- voltage
- transistor
- converter
- volts
- output
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/24—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to undervoltage or no-voltage
- H02H3/243—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to undervoltage or no-voltage for DC systems
-
- G—PHYSICS
- G04—HOROLOGY
- G04G—ELECTRONIC TIME-PIECES
- G04G9/00—Visual time or date indication means
- G04G9/0023—Visual time or date indication means by light valves in general
- G04G9/0029—Details
- G04G9/0047—Details electrical, e.g. selection or application of the operating voltage
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/04—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions
- G09G3/16—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions by control of light from an independent source
- G09G3/18—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions by control of light from an independent source using liquid crystals
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/50—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to the appearance of abnormal wave forms, e.g. ac in dc installations
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Computer Hardware Design (AREA)
- Theoretical Computer Science (AREA)
- Power Engineering (AREA)
- Liquid Crystal Display Device Control (AREA)
- Electric Clocks (AREA)
- Dc-Dc Converters (AREA)
- Protection Of Static Devices (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US471783A US3912977A (en) | 1974-05-20 | 1974-05-20 | Direct current protection circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
CH617316B5 true CH617316B5 (ar) | 1980-05-30 |
Family
ID=23872980
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH619975D CH619975A4 (ar) | 1974-05-20 | 1975-05-14 | |
CH619975A CH617316B5 (ar) | 1974-05-20 | 1975-05-14 |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH619975D CH619975A4 (ar) | 1974-05-20 | 1975-05-14 |
Country Status (7)
Country | Link |
---|---|
US (1) | US3912977A (ar) |
JP (1) | JPS50161657A (ar) |
CH (2) | CH619975A4 (ar) |
DE (1) | DE2521060A1 (ar) |
FR (1) | FR2272511B1 (ar) |
GB (1) | GB1500392A (ar) |
IT (1) | IT1038130B (ar) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5757716B2 (ar) * | 1974-05-16 | 1982-12-06 | Citizen Watch Co Ltd | |
JPS5634073B2 (ar) * | 1974-08-30 | 1981-08-07 | ||
JPS5651590B2 (ar) * | 1974-09-24 | 1981-12-07 | ||
JPS51135499A (en) * | 1975-05-20 | 1976-11-24 | Seiko Epson Corp | Liquid crystal display unit |
US4065803A (en) * | 1975-12-08 | 1977-12-27 | Canon Kabushiki Kaisha | Electronic device for preventing undesirable effect resulting from voltage fluctuation |
JPS5296064A (en) * | 1976-02-09 | 1977-08-12 | Seiko Epson Corp | Electronic timepiece |
US4013993A (en) * | 1976-03-22 | 1977-03-22 | Westinghouse Electric Corporation | Elevator system |
JPS593730B2 (ja) * | 1977-09-14 | 1984-01-25 | ソニー株式会社 | 液晶表示装置 |
DE3807020A1 (de) * | 1988-03-04 | 1989-09-14 | Eurosil Electronic Gmbh | Fluessigkristallanzeige mit taktgesteuerter abschaltung |
CN110865488B (zh) * | 2019-11-27 | 2022-09-09 | 京东方科技集团股份有限公司 | 背光模组、显示面板及显示装置 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3564384A (en) * | 1969-01-02 | 1971-02-16 | Ro Associates Inc | High efficiency power supply apparatus |
GB1343660A (en) * | 1970-12-29 | 1974-01-16 | Suwa Seikosha Kk | Timepiece |
US3708694A (en) * | 1971-05-20 | 1973-01-02 | Siliconix Inc | Voltage limiter |
US3739200A (en) * | 1971-09-27 | 1973-06-12 | Agostino M D | Fet interface circuit |
US3842589A (en) * | 1973-06-06 | 1974-10-22 | Optel Corp | Electronic timepieces |
JPS5224837A (en) * | 1975-08-13 | 1977-02-24 | Tai Kitatsuji | Reinforced lawn mat |
-
1974
- 1974-05-20 US US471783A patent/US3912977A/en not_active Expired - Lifetime
-
1975
- 1975-05-12 DE DE19752521060 patent/DE2521060A1/de not_active Ceased
- 1975-05-14 CH CH619975D patent/CH619975A4/xx unknown
- 1975-05-14 IT IT23340/75A patent/IT1038130B/it active
- 1975-05-14 GB GB20325/75A patent/GB1500392A/en not_active Expired
- 1975-05-14 CH CH619975A patent/CH617316B5/de not_active IP Right Cessation
- 1975-05-20 JP JP50060892A patent/JPS50161657A/ja active Pending
- 1975-05-20 FR FR7515675A patent/FR2272511B1/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR2272511B1 (ar) | 1978-12-08 |
GB1500392A (en) | 1978-02-08 |
CH619975A4 (ar) | 1977-08-31 |
DE2521060A1 (de) | 1975-12-04 |
IT1038130B (it) | 1979-11-20 |
US3912977A (en) | 1975-10-14 |
FR2272511A1 (ar) | 1975-12-19 |
JPS50161657A (ar) | 1975-12-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PL | Patent ceased |