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GB1172718A - Current Limiting Apparatus. - Google Patents

Current Limiting Apparatus.

Info

Publication number
GB1172718A
GB1172718A GB2595967A GB2595967A GB1172718A GB 1172718 A GB1172718 A GB 1172718A GB 2595967 A GB2595967 A GB 2595967A GB 2595967 A GB2595967 A GB 2595967A GB 1172718 A GB1172718 A GB 1172718A
Authority
GB
United Kingdom
Prior art keywords
june
series
current limiting
limiting apparatus
regeneratively
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
GB2595967A
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.)
Texas Instruments Inc
Original Assignee
Texas Instruments Inc
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 Texas Instruments Inc filed Critical Texas Instruments Inc
Publication of GB1172718A publication Critical patent/GB1172718A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C1/00—Details
    • H01C1/14—Terminals or tapping points or electrodes specially adapted for resistors; Arrangements of terminals or tapping points or electrodes on resistors
    • H01C1/1406—Terminals or electrodes formed on resistive elements having positive temperature coefficient
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/02—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient
    • H01C7/022—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient mainly consisting of non-metallic substances
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
    • H02H9/026—Current limitation using PTC resistors, i.e. resistors with a large positive temperature coefficient

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Ceramic Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermistors And Varistors (AREA)

Abstract

1,172,718. Protective arrangements. TEXAS INSTRUMENTS Inc. 6 June, 1967 [10 June, 1966], No. 25959/67. Headings H2H and H2K. [Also in Divisions H1 and H3] A load R1 having transistors requiring protection has in series a non-linear PTC element 13 comprising a pair of flat metal plate electrodes 15, 17 of comparatively large area and small distance apart spaced by a wafer of semiconductor material which sharply and regeneratively increases in resistance above a determined current flow. A relay coil W1 connected either in series or in parallel with element 13 opens contacts K1, K2, on a sustained overload. The semi-conductor material may comprise barium titanate doped with a rare earth or a carbon black filled plastic material.
GB2595967A 1966-06-10 1967-06-06 Current Limiting Apparatus. Expired GB1172718A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US55670166A 1966-06-10 1966-06-10

Publications (1)

Publication Number Publication Date
GB1172718A true GB1172718A (en) 1969-12-03

Family

ID=24222489

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2595967A Expired GB1172718A (en) 1966-06-10 1967-06-06 Current Limiting Apparatus.

Country Status (2)

Country Link
DE (1) DE1613895A1 (en)
GB (1) GB1172718A (en)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2948281A1 (en) * 1978-12-01 1980-06-19 Raychem Corp ELECTRICAL CIRCUIT AND CIRCUIT PROTECTION DEVICE
JPS5598801A (en) * 1978-12-01 1980-07-28 Raychem Corp Electric device
US4329726A (en) 1978-12-01 1982-05-11 Raychem Corporation Circuit protection devices comprising PTC elements
FR2520919A1 (en) * 1982-02-04 1983-08-05 Zanussi A Spa Industrie ELECTROMAGNETIC ACTUATOR
US5666254A (en) * 1995-09-14 1997-09-09 Raychem Corporation Voltage sensing overcurrent protection circuit
US5689395A (en) * 1995-09-14 1997-11-18 Raychem Corporation Overcurrent protection circuit
US5737160A (en) * 1995-09-14 1998-04-07 Raychem Corporation Electrical switches comprising arrangement of mechanical switches and PCT device
US5802709A (en) 1995-08-15 1998-09-08 Bourns, Multifuse (Hong Kong), Ltd. Method for manufacturing surface mount conductive polymer devices
US5849129A (en) 1995-08-15 1998-12-15 Bourns Multifuse (Hong Kong) Ltd. Continuous process and apparatus for manufacturing conductive polymer components
US5864280A (en) * 1995-09-29 1999-01-26 Littlefuse, Inc. Electrical circuits with improved overcurrent protection
US5864458A (en) * 1995-09-14 1999-01-26 Raychem Corporation Overcurrent protection circuits comprising combinations of PTC devices and switches
US6020808A (en) 1997-09-03 2000-02-01 Bourns Multifuse (Hong Kong) Ltd. Multilayer conductive polymer positive temperature coefficent device
US6023403A (en) 1996-05-03 2000-02-08 Littlefuse, Inc. Surface mountable electrical device comprising a PTC and fusible element
US6228287B1 (en) 1998-09-25 2001-05-08 Bourns, Inc. Two-step process for preparing positive temperature coefficient polymer materials
US6282072B1 (en) 1998-02-24 2001-08-28 Littelfuse, Inc. Electrical devices having a polymer PTC array
US6582647B1 (en) 1998-10-01 2003-06-24 Littelfuse, Inc. Method for heat treating PTC devices
US6628498B2 (en) 2000-08-28 2003-09-30 Steven J. Whitney Integrated electrostatic discharge and overcurrent device
US7132922B2 (en) 2002-04-08 2006-11-07 Littelfuse, Inc. Direct application voltage variable material, components thereof and devices employing same
US7183891B2 (en) 2002-04-08 2007-02-27 Littelfuse, Inc. Direct application voltage variable material, devices employing same and methods of manufacturing such devices
US7202770B2 (en) 2002-04-08 2007-04-10 Littelfuse, Inc. Voltage variable material for direct application and devices employing same

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5598801A (en) * 1978-12-01 1980-07-28 Raychem Corp Electric device
US4329726A (en) 1978-12-01 1982-05-11 Raychem Corporation Circuit protection devices comprising PTC elements
DE2948281A1 (en) * 1978-12-01 1980-06-19 Raychem Corp ELECTRICAL CIRCUIT AND CIRCUIT PROTECTION DEVICE
FR2520919A1 (en) * 1982-02-04 1983-08-05 Zanussi A Spa Industrie ELECTROMAGNETIC ACTUATOR
US5802709A (en) 1995-08-15 1998-09-08 Bourns, Multifuse (Hong Kong), Ltd. Method for manufacturing surface mount conductive polymer devices
US5849129A (en) 1995-08-15 1998-12-15 Bourns Multifuse (Hong Kong) Ltd. Continuous process and apparatus for manufacturing conductive polymer components
US5849137A (en) 1995-08-15 1998-12-15 Bourns Multifuse (Hong Kong) Ltd. Continuous process and apparatus for manufacturing conductive polymer components
US5864458A (en) * 1995-09-14 1999-01-26 Raychem Corporation Overcurrent protection circuits comprising combinations of PTC devices and switches
US5666254A (en) * 1995-09-14 1997-09-09 Raychem Corporation Voltage sensing overcurrent protection circuit
US5689395A (en) * 1995-09-14 1997-11-18 Raychem Corporation Overcurrent protection circuit
US5737160A (en) * 1995-09-14 1998-04-07 Raychem Corporation Electrical switches comprising arrangement of mechanical switches and PCT device
US5880668A (en) * 1995-09-29 1999-03-09 Littelfuse, Inc. Electrical devices having improved PTC polymeric compositions
US5864280A (en) * 1995-09-29 1999-01-26 Littlefuse, Inc. Electrical circuits with improved overcurrent protection
US6059997A (en) * 1995-09-29 2000-05-09 Littlelfuse, Inc. Polymeric PTC compositions
US6023403A (en) 1996-05-03 2000-02-08 Littlefuse, Inc. Surface mountable electrical device comprising a PTC and fusible element
US6020808A (en) 1997-09-03 2000-02-01 Bourns Multifuse (Hong Kong) Ltd. Multilayer conductive polymer positive temperature coefficent device
US6223423B1 (en) 1997-09-03 2001-05-01 Bourns Multifuse (Hong Kong) Ltd. Multilayer conductive polymer positive temperature coefficient device
US6282072B1 (en) 1998-02-24 2001-08-28 Littelfuse, Inc. Electrical devices having a polymer PTC array
US6228287B1 (en) 1998-09-25 2001-05-08 Bourns, Inc. Two-step process for preparing positive temperature coefficient polymer materials
US6582647B1 (en) 1998-10-01 2003-06-24 Littelfuse, Inc. Method for heat treating PTC devices
US6628498B2 (en) 2000-08-28 2003-09-30 Steven J. Whitney Integrated electrostatic discharge and overcurrent device
US7132922B2 (en) 2002-04-08 2006-11-07 Littelfuse, Inc. Direct application voltage variable material, components thereof and devices employing same
US7183891B2 (en) 2002-04-08 2007-02-27 Littelfuse, Inc. Direct application voltage variable material, devices employing same and methods of manufacturing such devices
US7202770B2 (en) 2002-04-08 2007-04-10 Littelfuse, Inc. Voltage variable material for direct application and devices employing same
US7609141B2 (en) 2002-04-08 2009-10-27 Littelfuse, Inc. Flexible circuit having overvoltage protection
US7843308B2 (en) 2002-04-08 2010-11-30 Littlefuse, Inc. Direct application voltage variable material

Also Published As

Publication number Publication date
DE1613895A1 (en) 1971-06-03

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee