GB1078919A - Non-inductive wire configurations - Google Patents

Non-inductive wire configurations

Info

Publication number
GB1078919A
GB1078919A GB44997/64A GB4499764A GB1078919A GB 1078919 A GB1078919 A GB 1078919A GB 44997/64 A GB44997/64 A GB 44997/64A GB 4499764 A GB4499764 A GB 4499764A GB 1078919 A GB1078919 A GB 1078919A
Authority
GB
United Kingdom
Prior art keywords
wire
winding
layer
adjacent
cathode heater
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
GB44997/64A
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.)
Varian Medical Systems Inc
Original Assignee
Varian Associates Inc
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 Varian Associates Inc filed Critical Varian Associates Inc
Publication of GB1078919A publication Critical patent/GB1078919A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02—Main electrodes
    • H01J1/13—Solid thermionic cathodes
    • H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
    • H01J1/22—Heaters
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating

Abstract

1,078,919. Cathode heaters; ohmic resistors. VARIAN ASSOCIATES. Nov. 4, 1964 [Dec. 23, 1963], No. 44997/64. Headings H1D and H1S. A non-inductive wire configuration for a cathode heater or a resistor comprises two adjacent spirally-wound layers of wire, wherein current flow in adjacent wire turns of each layer, and in adjacent wire turns of the two layers, is in opposite directions. In particular, a cathode heater for a klystron may comprise a two layer, double spiral formed by arranging a single continuous wire as shown in Fig. 5c, and winding the loop end 52 and the free ends 54 spirally in the same direction about the posts 56, 58. A two-layer cylindrical cathode heater as shown in Fig. 7 may be formed by bending a wire in half and winding a double helix on a first cylindrical surface and then reversely winding a second double helix on a second cylindrical surface coaxial with the first.
GB44997/64A 1963-12-23 1964-11-04 Non-inductive wire configurations Expired GB1078919A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US332685A US3259784A (en) 1963-12-23 1963-12-23 Non-inductive wire configurations

Publications (1)

Publication Number Publication Date
GB1078919A true GB1078919A (en) 1967-08-09

Family

ID=23299378

Family Applications (1)

Application Number Title Priority Date Filing Date
GB44997/64A Expired GB1078919A (en) 1963-12-23 1964-11-04 Non-inductive wire configurations

Country Status (3)

Country Link
US (1) US3259784A (en)
GB (1) GB1078919A (en)
NL (1) NL6413608A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10211947A1 (en) * 2002-03-18 2003-10-16 Siemens Ag Thermionic emitter, especially for x-ray tubes, has magnetic field compensation arrangement with current generating magnetic field that substantially compensates field generated by heating current

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3610971A (en) * 1969-04-15 1971-10-05 Electrodynamic Gravity Inc All-electric motional electric field generator
US4084077A (en) * 1977-05-10 1978-04-11 Igor Antonovich Porazhinsky Cathode assembly of electron beam welding gun
US4176293A (en) * 1978-02-17 1979-11-27 Varian Associates, Inc. Thermionic cathode heater having reduced magnetic field
GB2192751B (en) * 1986-07-14 1991-02-13 Denki Kagaku Kogyo Kk Method of making a thermionic cathode structure.
JP2817451B2 (en) * 1991-06-25 1998-10-30 日本電気株式会社 Cathode for electron tube

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US443256A (en) * 1890-12-23 Making hair-springs for watch-balances
US786257A (en) * 1900-05-14 1905-04-04 George Westinghouse Electric heater and method of manufacturing same.
US1402889A (en) * 1920-09-21 1922-01-10 Potstada George Electric heating element
US2396949A (en) * 1940-09-05 1946-03-19 Harries John Henry Owen Electron discharge tube
US2516930A (en) * 1944-04-14 1950-08-01 Sperry Corp Filament forming method
US2905852A (en) * 1954-06-15 1959-09-22 Bell Telephone Labor Inc Electron discharge device
US2731541A (en) * 1954-07-09 1956-01-17 Oxy Catalyst Inc Catalytic structure and apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10211947A1 (en) * 2002-03-18 2003-10-16 Siemens Ag Thermionic emitter, especially for x-ray tubes, has magnetic field compensation arrangement with current generating magnetic field that substantially compensates field generated by heating current

Also Published As

Publication number Publication date
NL6413608A (en) 1965-06-24
US3259784A (en) 1966-07-05

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