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
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.
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 (18)
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 |
US5864458A (en) * | 1995-09-14 | 1999-01-26 | Raychem Corporation | Overcurrent protection circuits comprising combinations of PTC devices and switches |
US5864280A (en) * | 1995-09-29 | 1999-01-26 | Littlefuse, Inc. | Electrical circuits with improved overcurrent protection |
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 |
US7843308B2 (en) | 2002-04-08 | 2010-11-30 | Littlefuse, Inc. | Direct application voltage variable material |
-
1967
- 1967-05-18 DE DE19671613895 patent/DE1613895A1/en active Pending
- 1967-06-06 GB GB2595967A patent/GB1172718A/en not_active Expired
Cited By (23)
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 |
JPH0151041B2 (en) * | 1978-12-01 | 1989-11-01 | Raychem Corp | |
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 |
US5849137A (en) | 1995-08-15 | 1998-12-15 | Bourns Multifuse (Hong Kong) Ltd. | Continuous process and apparatus for manufacturing conductive polymer components |
US5849129A (en) | 1995-08-15 | 1998-12-15 | Bourns Multifuse (Hong Kong) Ltd. | Continuous process and apparatus for manufacturing conductive polymer components |
US5666254A (en) * | 1995-09-14 | 1997-09-09 | Raychem Corporation | Voltage sensing overcurrent protection circuit |
US5737160A (en) * | 1995-09-14 | 1998-04-07 | Raychem Corporation | Electrical switches comprising arrangement of mechanical switches and PCT device |
US5689395A (en) * | 1995-09-14 | 1997-11-18 | Raychem Corporation | Overcurrent protection circuit |
US5864458A (en) * | 1995-09-14 | 1999-01-26 | Raychem Corporation | Overcurrent protection circuits comprising combinations of PTC devices and switches |
US5864280A (en) * | 1995-09-29 | 1999-01-26 | Littlefuse, Inc. | Electrical circuits with improved overcurrent protection |
US5880668A (en) * | 1995-09-29 | 1999-03-09 | Littelfuse, Inc. | Electrical devices having improved PTC polymeric compositions |
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 |
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 |