GB1500392A - Direct current protection circuit - Google Patents

Direct current protection circuit

Info

Publication number
GB1500392A
GB1500392A GB20325/75A GB2032575A GB1500392A GB 1500392 A GB1500392 A GB 1500392A GB 20325/75 A GB20325/75 A GB 20325/75A GB 2032575 A GB2032575 A GB 2032575A GB 1500392 A GB1500392 A GB 1500392A
Authority
GB
United Kingdom
Prior art keywords
converter
inductor
interrupted
capacitor
driver transistors
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
GB20325/75A
Other languages
English (en)
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.)
RCA Corp
Original Assignee
RCA 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 RCA Corp filed Critical RCA Corp
Publication of GB1500392A publication Critical patent/GB1500392A/en
Expired legal-status Critical Current

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)
GB20325/75A 1974-05-20 1975-05-14 Direct current protection circuit Expired GB1500392A (en)

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
GB1500392A true GB1500392A (en) 1978-02-08

Family

ID=23872980

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20325/75A Expired GB1500392A (en) 1974-05-20 1975-05-14 Direct current protection circuit

Country Status (7)

Country Link
US (1) US3912977A (en, 2012)
JP (1) JPS50161657A (en, 2012)
CH (2) CH617316B5 (en, 2012)
DE (1) DE2521060A1 (en, 2012)
FR (1) FR2272511B1 (en, 2012)
GB (1) GB1500392A (en, 2012)
IT (1) IT1038130B (en, 2012)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5757716B2 (en, 2012) * 1974-05-16 1982-12-06 Citizen Watch Co Ltd
JPS5634073B2 (en, 2012) * 1974-08-30 1981-08-07
JPS5651590B2 (en, 2012) * 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)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
CH619975A4 (en, 2012) 1977-08-31
JPS50161657A (en, 2012) 1975-12-27
FR2272511A1 (en, 2012) 1975-12-19
DE2521060A1 (de) 1975-12-04
FR2272511B1 (en, 2012) 1978-12-08
IT1038130B (it) 1979-11-20
US3912977A (en) 1975-10-14
CH617316B5 (en, 2012) 1980-05-30

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee