GB1254711A - Improvements relating to voltage transient protection - Google Patents

Improvements relating to voltage transient protection

Info

Publication number
GB1254711A
GB1254711A GB3021768A GB3021768A GB1254711A GB 1254711 A GB1254711 A GB 1254711A GB 3021768 A GB3021768 A GB 3021768A GB 3021768 A GB3021768 A GB 3021768A GB 1254711 A GB1254711 A GB 1254711A
Authority
GB
United Kingdom
Prior art keywords
capacitor
load circuit
discharge
arrangement
voltage transient
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
GB3021768A
Inventor
Robert Geoffrey Dancy
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.)
Infineon Technologies Reigate Ltd
Original Assignee
International Rectifier Company Great Britain Ltd
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 International Rectifier Company Great Britain Ltd filed Critical International Rectifier Company Great Britain Ltd
Priority to GB3021768A priority Critical patent/GB1254711A/en
Publication of GB1254711A publication Critical patent/GB1254711A/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
    • H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage

Landscapes

  • Emergency Protection Circuit Devices (AREA)

Abstract

1,254,711. Protective apparatus. INTERNATIONAL RECTIFIER CO. (GREAT BRITAIN) Ltd. 25 Aug., 1969 [25 June, 1968], No. 30217/68. Heading H2H. An arrangement for protecting elements in a load circuit 10, e.g. semi-conductor elements, comprises at least one capacitor 12, connected to the load circuit by way of a rectifier bridge 11, the capacitor 12 having a non-linear resistive component such as one or more Zener diodes 14 connected in parallel therewith, the arrangement being such that the Zener diode 14 discharges the capacitor 12 over a longer period than the period during which the capacitor charges from the load circuit, the characteristics of the Zener diode 14 being such that it passes only a small current under normal conditions of the load circuit 10 and a progressively higher discharge current when the voltage across the capacitor rises due to an over-voltage transient in the load circuit 10. Resistors 13, 16, 17 are provided for current limiting purposes whilst resistor 15 is provided to discharge the capacitor when the apparatus is switched off. More than one capacitor may be provided each with its own discharge circuit and the non-linear resistor may be a selenium diode. A three phase embodiment is described.
GB3021768A 1968-06-25 1968-06-25 Improvements relating to voltage transient protection Expired GB1254711A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3021768A GB1254711A (en) 1968-06-25 1968-06-25 Improvements relating to voltage transient protection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3021768A GB1254711A (en) 1968-06-25 1968-06-25 Improvements relating to voltage transient protection

Publications (1)

Publication Number Publication Date
GB1254711A true GB1254711A (en) 1971-11-24

Family

ID=10304156

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3021768A Expired GB1254711A (en) 1968-06-25 1968-06-25 Improvements relating to voltage transient protection

Country Status (1)

Country Link
GB (1) GB1254711A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4646222A (en) * 1982-07-15 1987-02-24 Tokyo Shibaura Denki Kabushiki Kaisha Inverter provided with an overvoltage clamping circuit
GB2183943A (en) * 1985-11-28 1987-06-10 Danfoss As Protective circuit for the field coil of an electromagnetic flow meter
GB2226195A (en) * 1988-12-15 1990-06-20 Philips Nv A transient protection circuit
FR2678447A1 (en) * 1991-06-26 1992-12-31 Alcatel Cable Device for filtering disturbances on an energy line
EP2360820A1 (en) * 2009-12-31 2011-08-24 Nxp B.V. Surge protection circuit
CN109787203A (en) * 2019-02-28 2019-05-21 厦门方光电子科技有限公司 A kind of lightning protection anti-surge circuit

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4646222A (en) * 1982-07-15 1987-02-24 Tokyo Shibaura Denki Kabushiki Kaisha Inverter provided with an overvoltage clamping circuit
GB2183943A (en) * 1985-11-28 1987-06-10 Danfoss As Protective circuit for the field coil of an electromagnetic flow meter
GB2183943B (en) * 1985-11-28 1989-10-11 Danfoss As Protective circuit for the field coil of an electromagnetic flow meter
GB2226195A (en) * 1988-12-15 1990-06-20 Philips Nv A transient protection circuit
FR2678447A1 (en) * 1991-06-26 1992-12-31 Alcatel Cable Device for filtering disturbances on an energy line
US9007730B2 (en) 2009-12-30 2015-04-14 Nxp B.V. Surge protection circuit
EP2360820A1 (en) * 2009-12-31 2011-08-24 Nxp B.V. Surge protection circuit
CN109787203A (en) * 2019-02-28 2019-05-21 厦门方光电子科技有限公司 A kind of lightning protection anti-surge circuit
CN109787203B (en) * 2019-02-28 2024-04-30 厦门方光电子科技有限公司 Lightning-proof and surge-proof circuit

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