GB1375211A - - Google Patents

Info

Publication number
GB1375211A
GB1375211A GB348171A GB348171A GB1375211A GB 1375211 A GB1375211 A GB 1375211A GB 348171 A GB348171 A GB 348171A GB 348171 A GB348171 A GB 348171A GB 1375211 A GB1375211 A GB 1375211A
Authority
GB
United Kingdom
Prior art keywords
cathode
gun
arc
discharge
anode
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
GB348171A
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 filed Critical
Priority to GB348171A priority Critical patent/GB1375211A/en
Publication of GB1375211A publication Critical patent/GB1375211A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
    • H01J37/32—Gas-filled discharge tubes
    • H01J37/32009—Arrangements for generation of plasma specially adapted for examination or treatment of objects, e.g. plasma sources
    • H01J37/32018—Glow discharge
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
    • H01J37/02—Details
    • H01J37/24—Circuit arrangements not adapted to a particular application of the tube and not otherwise provided for
    • H01J37/241—High voltage power supply or regulation circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/20—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for electronic equipment

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Power Engineering (AREA)
  • Electron Sources, Ion Sources (AREA)
  • Welding Or Cutting Using Electron Beams (AREA)

Abstract

1375211 Supply circuits for electron guns GENERAL ELECTRIC CO Ltd 28 Jan 1972 [29 Jan 1971] 3481/71 Heading H2H A glow discharge electron gun 1 is supplied by a circuit comprising a capacitance C in series with an inductance L2, so that in the event of an arc discharge occurring in the gun, the capacitor discharges to momentarily reverse the voltage applied to the gun thereby extinguishing the arc discharge. In normal operation, a D.C. supply circuit 6 causes a glow discharge between the cathode 3 and anode 4 of the gun, ions from the discharge bombarding the cathode which emits an electron beam 12 for heating a target 8 in an argon filled enclosure 2. When an arc discharge occurs between the cathode and anode the capacitor C, the capacitance of which is much greater than the self capacitance of the gun, discharges and undergoes damped resonance with the inductor L2 so that the anode 4 becomes negative with respect to the cathode thereby extinguishing the arc. The cathode is therefore protected against excessive arc current.
GB348171A 1972-01-28 1972-01-28 Expired GB1375211A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB348171A GB1375211A (en) 1972-01-28 1972-01-28

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB348171A GB1375211A (en) 1972-01-28 1972-01-28

Publications (1)

Publication Number Publication Date
GB1375211A true GB1375211A (en) 1974-11-27

Family

ID=9759136

Family Applications (1)

Application Number Title Priority Date Filing Date
GB348171A Expired GB1375211A (en) 1972-01-28 1972-01-28

Country Status (1)

Country Link
GB (1) GB1375211A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2456384A1 (en) * 1979-05-08 1980-12-05 Leybold Heraeus Gmbh & Co Kg HIGH VOLTAGE SUPPLY DEVICE FOR ELECTRONIC POWER GUNS
EP2073243A1 (en) * 2007-12-21 2009-06-24 Applied Materials, Inc. Linear electron source, evaporator using linear electron source, and applications of electron sources
EP2088612A1 (en) * 2007-12-21 2009-08-12 Applied Materials, Inc. Method of heating or cleaning a web or foil

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2456384A1 (en) * 1979-05-08 1980-12-05 Leybold Heraeus Gmbh & Co Kg HIGH VOLTAGE SUPPLY DEVICE FOR ELECTRONIC POWER GUNS
EP2073243A1 (en) * 2007-12-21 2009-06-24 Applied Materials, Inc. Linear electron source, evaporator using linear electron source, and applications of electron sources
WO2009080411A1 (en) * 2007-12-21 2009-07-02 Applied Materials, Inc. Linear electron source, evaporator using linear electron source, and applications of electron sources
EP2088612A1 (en) * 2007-12-21 2009-08-12 Applied Materials, Inc. Method of heating or cleaning a web or foil
US8294115B2 (en) 2007-12-21 2012-10-23 Applied Materials, Inc. Linear electron source, evaporator using linear electron source, and applications of electron sources

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Legal Events

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