GB803890A - Improvements in or relating to lightning arresters comprising a gas discharge tube - Google Patents

Improvements in or relating to lightning arresters comprising a gas discharge tube

Info

Publication number
GB803890A
GB803890A GB18476/56A GB1847656A GB803890A GB 803890 A GB803890 A GB 803890A GB 18476/56 A GB18476/56 A GB 18476/56A GB 1847656 A GB1847656 A GB 1847656A GB 803890 A GB803890 A GB 803890A
Authority
GB
United Kingdom
Prior art keywords
bridge
gas discharge
june
electrodes
discharge tube
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
GB18476/56A
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Publication of GB803890A publication Critical patent/GB803890A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H01J17/38—Cold-cathode tubes
    • H01J17/40—Cold-cathode tubes with one cathode and one anode, e.g. glow tubes, tuning-indicator glow tubes, voltage-stabiliser tubes, voltage-indicator tubes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0059—Arc discharge tubes

Landscapes

  • Thermistors And Varistors (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

803,890. Cold-cathode tubes. TELEFONAKTIEBOLAGET, L. M. ERICSSON. June 14, 1956 [June 14, 1955], No. 18476/56. Class 39(1). A gas discharge tube, intended for use as a lightning or surge voltage arrestor, comprises two electrodes 1 and 2, arranged to form a discharge path, and a bridge 6 extending along the length of the path and spaced from the electrodes 1 and 2 for reducing the ignition delay of the tube. The bridge is made of a composition including an electrically conductive material, such as aluminium, tantalum, titanium or zirconium in powder form, and a binder such as sodium or potassium silicate, which forms a thin insulating layer on the surface of each of the metal grains by a chemical reaction. The material used for the bridge should have a non-linear voltage/current characteristic. When a surge voltage with a steep front appears, there will be a great number of very small discharges between the metal grains in the bridge, so that ionization is produced simultaneously at all points in the discharge path, thereby reducing the ignition delay. A small quantity of radium may be added to the electrode material for the same purpose.
GB18476/56A 1955-06-14 1956-06-14 Improvements in or relating to lightning arresters comprising a gas discharge tube Expired GB803890A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE803890X 1955-06-14

Publications (1)

Publication Number Publication Date
GB803890A true GB803890A (en) 1958-11-05

Family

ID=20342658

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18476/56A Expired GB803890A (en) 1955-06-14 1956-06-14 Improvements in or relating to lightning arresters comprising a gas discharge tube

Country Status (1)

Country Link
GB (1) GB803890A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4131806A1 (en) * 1990-09-25 1992-04-02 Yazaki Corp DISCHARGE TUBES AND METHOD FOR THE PRODUCTION THEREOF

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4131806A1 (en) * 1990-09-25 1992-04-02 Yazaki Corp DISCHARGE TUBES AND METHOD FOR THE PRODUCTION THEREOF

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