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公开(公告)号：DE1286558B
公开(公告)日：1969-01-09
申请号：DEI0032583
申请日：1966-12-22
Applicant: IBM
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公开(公告)号：JPS6286636A
公开(公告)日：1987-04-21
申请号：JP22642785
申请日：1985-10-11
Applicant: NEC CORP , MIYAGI NIPPON DENKI KK
Inventor： MASUKO KAZUNORI , TAGATA TSUGINORI
IPC: H01J3/06
Abstract: PURPOSE:To realize miniaturization and economization, by sending each channel- synchronous pulse in conformity with channel-signified code input,with a fundamental pulse as a base, from only a digital circuit. CONSTITUTION:A circuit 12, in which a pulse for initial setting is made by a fundamental pulse d sent from a synchronous pulse-generating device and the first clock e, and a counter 14, in which channel-signified code inputs k-k are read with a pulse obtained in this circuit and the code inputs are counted down with the second clock 1 to output the carry signal as a channel- synchronous pulse, are provided. Because a pulse corresponding to the channel- synchronous pulse is sent from a circuit composed of only digital circuits comprising a logic circuit and a counter by changing a channel-signified code in this way, the circuit is suitable for integration and its operation at a high speed and economization can be realized.
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Patent Agency Ranking
公开(公告)号：NL8500786A
公开(公告)日：1986-10-16
申请号：NL8500786
申请日：1985-03-19
Applicant: PHILIPS NV
Abstract: @ A method of manufacturing a CRT comprising the step of adjusting of the location and/or the angle orientation of the gun with respect to the axis of the envelope.The adjustment is carried out by means of a structure (15) connected to the gun assembly (32), which consists of magnetically half hard material and is magnetized as a multipole, and a device having magnetic field-sensitive sensors (20, 21, 22, 23) provided around the envelope (1) at the level of the structure (15), the desired location and orientation of the gun assembly being adjusted by rotating and translating (x, y) the gun assembly and observing the field observed by the sensors (20, 21, 22, 23), after which the gun assembly is connected in the envelope, and after which the structure is preferably demagnetized. As a result of this a very accurate adjustment in the tube is obtained.
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公开(公告)号：DE3317779A1
公开(公告)日：1983-11-17
申请号：DE3317779
申请日：1983-05-16
Applicant: RCA CORP
Inventor： HALE JOHN RICHARD , ALEXANDER ROBERT JOHN
Abstract: The present invention is an improvement in an electron gun assembly. Such a gun assembly includes a plurality of indirectly heated cathode assemblies and at least two spaced successive electrodes having aligned apertures therein for passage of a plurality of electron beams. The cathode assemblies include a plurality of cathode heaters which are attached to at least two electrically insulating support rods by a plurality of heater bead straps. Each of the heater bead straps includes a main body portion having a distal end and a proximal end. The proximal end has a bifurcated portion comprising a pair of closely spaced apart grasping members for embedment into one of the insulating support rods. At least one member of the pair of grasping members is angulated with respect to the main body portion to increase the retention of the heater bead straps to the insulating support rods.
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公开(公告)号：DE2647727A1
公开(公告)日：1977-05-05
申请号：DE2647727
申请日：1976-10-22
Applicant: VARIAN ASSOCIATES
Inventor： PREIST DONALD HENRY
Abstract: A grid-controlled electron tube is constructed with a common anode and an array of individual cathode-grid modules. The simple modules can be built with greater accuracy than large, complex electrodes. The modules can be individually tested before final assembly, and can be individually replaced in case of a failure during construction or later operation. In a preferred embodiment, the cathode is a cylindrical filament surrounded by a coaxial grid, each grid turn being mounted to a common support on the side opposite the anode. In a tetrode embodiment, additional focusing bars at the sides of the grid direct electrons into beams which pass between large screen-grid wires.
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公开(公告)号：DE2121407A1
公开(公告)日：1971-11-11
申请号：DE2121407
申请日：1971-04-30
Applicant: UNION CARBIDE CORP
Abstract: 1329228 Electron guns UNION CARBIDE CORP 30 April 1971 [1 May 1970] 12369/71 Heading H1D An electron gun for a welding apparatus comprises a thermionic cathode 15, Fig. 1, disposed opposite an apertured main anode 19 and heated by electrons from a glow discharge between an auxiliary cathode 1 and anode 7. The auxiliary cathode is preferably concave in order to focus the emitted electrons on to the main cathode, and the radius of the concavity is preferably twice the cathode radius. The auxiliary anode 7 surrounds the auxiliary cathode and may be connected to the main cathode by a lead 17. In Fig. 1, the auxiliary discharge is produced by a 10KV potential within an insulated enclosure 5 in a gas pressure of 10- 20 microns, and the main gun operates at 60KV in a gas pressure of 0À1 microns. Back-firing is prevented by (a) feeding the gas through a bubbler unit 25 and/or through an insulated tube connected to a gas bottle which is insulated from earth, (b) providing a flange 9 on the pilot anode 7 outside the insulator 2 to move the field stress outside the chamber C, (c) providing an insulating or conductive baffle (not shown) below the gas exhaust apertures 27, (d) providing a control ring 11 in contact with the Faraday dark space and preferably connected to the anode through a high resistance 12, the gas inlet and exhaust apertures passing through the ring. The power of the main beam may be controlled either by controlling the auxiliary discharge or, if the emitting cathode 15 is insulated from the main cathode electrode 16, by altering the bias between these two members. In a modification, Fig. 4 (not shown), the main cathode structure is secured to the bottom of a cup-shaped conductor which forms the wall of the auxiliary discharge chamber. In a further modification, Fig. 5 (not shown), an inner wire mesh or solid cup is attached to the control ring and spaced by a gap or by insulating material from the cup-shaped conductor. Opposite the main cathode the mesh cup has an opening in which a tube may be inserted. The diameter of the opening is such that the main beam can pass through it but fringing electrons are intercepted, and the effect is to stabilize the focus against the effects of changes in pressure.
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公开(公告)号：CH125081A
公开(公告)日：1928-03-16
申请号：CH125081D
申请日：1927-01-27
Applicant: SIEMENS SCHUCKERTWERKE GMBH
Inventor： BESCHRAENKTER HAFTUNG SIEMENS-
IPC: H01J3/06
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