GB439755A - Improvements in or relating to thermionic valve arrangements - Google Patents

Improvements in or relating to thermionic valve arrangements

Info

Publication number
GB439755A
GB439755A GB24467/34A GB2446734A GB439755A GB 439755 A GB439755 A GB 439755A GB 24467/34 A GB24467/34 A GB 24467/34A GB 2446734 A GB2446734 A GB 2446734A GB 439755 A GB439755 A GB 439755A
Authority
GB
United Kingdom
Prior art keywords
cathode
conductors
coaxial
valve
input
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
GB24467/34A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB439755A publication Critical patent/GB439755A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/06—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
    • G03C1/08—Sensitivity-increasing substances
    • G03C1/10—Organic substances
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B9/00—Generation of oscillations using transit-time effects
    • H03B9/01—Generation of oscillations using transit-time effects using discharge tubes

Abstract

439,755. Thermionic valves; valve amplifying circuits. GREIG, J., 16, Lincoln Road, Wembley, Middlesex. Aug. 24, 1934, No. 24467. [Classes 39 (i) and 40 (v)] An arrangement for amplifying very high - frequency oscillations comprises a thermionic valve having coaxial circular cylindrical electrodes at least one of which is a screening electrode, and having its input and output circuits formed by conductors of circular cross-section which are coaxial with the electrodes of the valve, the ratio of the diameters of the coaxial conductors being made the same as that of the corresponding electrodes. The valve shown comprises a cathode C, control grid CG, screen grid SG and an anode A forming the outer wall of the envelope. The input circuit comprises coaxial tubes GL, CLI to the nodal points of which direct current connections GC, HC are made. The input from a transmission line PTL is stepped up by the coil L and applied to symmetrical points on the grid conductor. The output circuit is formed in a similar manner by the extensions AL, SL of the anode and screen respectively. An additional extension CL of the cathode projecting within the tube SL permits adjustment of the high frequency potential of the screen relative to the cathode to ensure stable operation. The external conductors are connected through annular seals to the internal electrode leads which may be cylinders or wire cages. The cathode may be pure tungsten or coated with dull-emitting material, and is provided with an internal heater, (not shown), not necessarily in the evacuated space. The conductors are preferably made telescopic to enable tuning to be effected.
GB24467/34A 1939-11-13 1934-08-24 Improvements in or relating to thermionic valve arrangements Expired GB439755A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE218656X 1939-11-13

Publications (1)

Publication Number Publication Date
GB439755A true GB439755A (en) 1935-12-13

Family

ID=5831433

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24467/34A Expired GB439755A (en) 1939-11-13 1934-08-24 Improvements in or relating to thermionic valve arrangements

Country Status (4)

Country Link
US (1) US2278947A (en)
CH (1) CH218656A (en)
FR (1) FR872133A (en)
GB (1) GB439755A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE757509C (en) * 1938-06-30 1953-02-02 Emi Ltd Ultra short wave amplifier

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2461137A (en) * 1946-09-04 1949-02-08 Eastman Kodak Co Photographic emulsions sensitized with n, n-alkylenecyanine dyes
JPS5969754A (en) 1982-10-14 1984-04-20 Fuji Photo Film Co Ltd Color photosensitive silver halide material
JPS59116647A (en) 1982-12-13 1984-07-05 Konishiroku Photo Ind Co Ltd Silver halide photosensitive material
JPS59137946A (en) 1983-01-28 1984-08-08 Fuji Photo Film Co Ltd Silver halide photosensitive material
JPS59188641A (en) 1983-04-11 1984-10-26 Fuji Photo Film Co Ltd Silver halide photographic emulsion
JPS60143331A (en) 1983-12-29 1985-07-29 Fuji Photo Film Co Ltd Silver halide photosensitive material
JPS61245151A (en) 1985-04-23 1986-10-31 Konishiroku Photo Ind Co Ltd Silver halide photographic sensitive material
JPS61250643A (en) 1985-04-30 1986-11-07 Konishiroku Photo Ind Co Ltd Silver halide photographic sensitive material
JPS61250645A (en) 1985-04-30 1986-11-07 Konishiroku Photo Ind Co Ltd Silver halide photographic sensitive material
DE3682128D1 (en) 1985-07-17 1991-11-28 Konishiroku Photo Ind PHOTOGRAPHIC SILVER HALOGENID MATERIAL.
DE3684430D1 (en) 1985-12-25 1992-04-23 Fuji Photo Film Co Ltd METHOD FOR PRODUCING AN IMAGE.
DE3782351T2 (en) 1986-03-25 1993-05-27 Konishiroku Photo Ind LIGHT SENSITIVE PHOTOGRAPHIC SILVER HALOGENID MATERIAL USED FOR FAST DEVELOPMENT.
DE69131785T2 (en) 1990-08-20 2000-05-11 Fuji Photo Film Co Ltd Data-preserving photographic film product and method for producing a color image
DE69230387T2 (en) 1991-04-22 2000-06-29 Fuji Photo Film Co Ltd Silver halide photographic materials and methods of processing them
JP2936105B2 (en) * 1991-06-06 1999-08-23 コニカ株式会社 Method for producing silver halide emulsion and silver halide photographic material
JPH05127290A (en) * 1991-11-06 1993-05-25 Konica Corp Silver halide photographic emulsion and silver halide photographic sensitive material formed by using this emulsion
DE69328884T2 (en) 1992-03-19 2000-12-07 Fuji Photo Film Co Ltd Process for the preparation of a silver halide photographic emulsion
JP2824717B2 (en) 1992-07-10 1998-11-18 富士写真フイルム株式会社 Processing method of silver halide photographic material
DE69329173T2 (en) 1992-09-24 2001-01-11 Fuji Photo Film Co Ltd Processing method for black-and-white photosensitive material containing silver halide
US5429919A (en) * 1993-09-30 1995-07-04 Eastman Kodak Company Silver halide photographic elements with increased contrast
US5556738A (en) * 1994-07-18 1996-09-17 Konica Corporation Silver halide photographic element and processing method thereof
US5468588A (en) 1994-10-18 1995-11-21 Minnesota Mining And Manufacturing Company Process for manufacturing diffusion transfer printing plates
JPH08190199A (en) 1994-10-18 1996-07-23 Minnesota Mining & Mfg Co <3M> Photosensitive element
DE4445966A1 (en) * 1994-12-22 1996-06-27 Agfa Gevaert Ag Photographic silver halide material stabilised from desensitisation
JP3473876B2 (en) * 1995-08-09 2003-12-08 富士写真フイルム株式会社 Silver halide photographic emulsion
EP1589372A1 (en) * 2003-01-31 2005-10-26 Konica Corporation Silver halide emulsion, silver halide photographic sensitive material, and method of image formation
JP2007041376A (en) 2005-08-04 2007-02-15 Fujifilm Holdings Corp Silver halide photosensitive material and package including the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE757509C (en) * 1938-06-30 1953-02-02 Emi Ltd Ultra short wave amplifier

Also Published As

Publication number Publication date
FR872133A (en) 1942-05-30
US2278947A (en) 1942-04-07
CH218656A (en) 1941-12-31

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