ES339974A1 - Improvements in or relating to Power Supplies for Electron Beam Furnaces - Google Patents

Improvements in or relating to Power Supplies for Electron Beam Furnaces

Info

Publication number
ES339974A1
ES339974A1 ES339974A ES339974A ES339974A1 ES 339974 A1 ES339974 A1 ES 339974A1 ES 339974 A ES339974 A ES 339974A ES 339974 A ES339974 A ES 339974A ES 339974 A1 ES339974 A1 ES 339974A1
Authority
ES
Spain
Prior art keywords
electron beam
switch
circuit
winding
current
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
ES339974A
Other languages
Spanish (es)
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.)
Libbey Owens Ford Glass Co
Original Assignee
Libbey Owens Ford Glass Co
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 Libbey Owens Ford Glass Co filed Critical Libbey Owens Ford Glass Co
Publication of ES339974A1 publication Critical patent/ES339974A1/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/14—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas designed for spraying particulate materials
    • B05B7/1404—Arrangements for supplying particulate material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current 
    • G05F1/46—Regulating voltage or current  wherein the variable actually regulated by the final control device is DC
    • G05F1/52—Regulating voltage or current  wherein the variable actually regulated by the final control device is DC using discharge tubes in series with the load as final control devices
    • 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
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/0007—Details of emergency protective circuit arrangements concerning the detecting means
    • H02H1/0015—Using arc detectors
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Electron Sources, Ion Sources (AREA)
  • Particle Accelerators (AREA)

Abstract

A fraction of the voltage across an electron beam furnace is compared with an adjustable reference 84 and the error passed through an isolating circuit (even nos 90-98) to a transistor voltage regulator which normally supplies a positive bias to a grid 20 through a switch 22. When the voltage across a current sensing resistor 46 exceeds a level determined by a trigger circuit 24 switch 22 is opened and a negative cut off bias 112 is applied to the grid 20 through a resistor 110. After a delay determined by a circuit 114, switch 22 is reclosed. Electron beam current is controlled through a tranductor 122 having a power winding (not shown) a control winding 124 and winding 126 the output of which is compared with a reference 128, the difference between which controls the filament current through circuits 132, 134. The trigger circuit 24 is protected against excessive voltages by diodes 118, 120. The filament current may be alternatively controlled by evaporation rate or target temperature. The arrangement may be multiplied to supply a plurality of furnaces.
ES339974A 1966-05-02 1967-04-28 Improvements in or relating to Power Supplies for Electron Beam Furnaces Expired ES339974A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US54665166A 1966-05-02 1966-05-02

Publications (1)

Publication Number Publication Date
ES339974A1 true ES339974A1 (en) 1968-05-16

Family

ID=24181392

Family Applications (1)

Application Number Title Priority Date Filing Date
ES339974A Expired ES339974A1 (en) 1966-05-02 1967-04-28 Improvements in or relating to Power Supplies for Electron Beam Furnaces

Country Status (10)

Country Link
AT (1) AT283514B (en)
BE (1) BE697663A (en)
CH (1) CH474177A (en)
DE (1) DE1588867A1 (en)
DK (1) DK124850B (en)
ES (1) ES339974A1 (en)
GB (1) GB1177292A (en)
LU (1) LU53437A1 (en)
NL (1) NL6706160A (en)
SE (1) SE334690B (en)

Also Published As

Publication number Publication date
AT283514B (en) 1970-08-10
NL6706160A (en) 1967-11-03
SE334690B (en) 1971-05-03
LU53437A1 (en) 1967-06-19
BE697663A (en) 1967-10-02
CH474177A (en) 1969-06-15
GB1177292A (en) 1970-01-07
DK124850B (en) 1972-11-27
DE1588867A1 (en) 1970-10-29

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