FILAMENT POWER SUPPLY FOR ELECTRON ACCELERATOR AND ELECTRON ACCELERATOR

    公开(公告)号:EP3648327A1

    公开(公告)日:2020-05-06

    申请号:EP19205907.9

    申请日:2019-10-29

    IPC分类号: H02M3/156 H01J1/13 H05G1/10

    摘要: The present disclosure provides a filament power supply for an electron accelerator and an electron accelerator. The filament power supply includes: a rectifier circuit configured to convert a power frequency AC voltage signal into a DC voltage signal; an inverter circuit configured to convert the DC voltage signal into an AC voltage signal and output the AC voltage signal; a sampling circuit configured to sample at least one of a current or a voltage of the AC voltage signal to obtain at least one of a current sampling signal or a voltage sampling signal; a pulse width modulation control chip configured to adjust a duty cycle of a pulse width modulation signal output by the pulse width modulation control chip until a voltage of the current sampling signal is equal to that of a reference current signal, or a voltage of the voltage sampling signal is equal to that of a reference voltage signal; and a modulation circuit configured to modulate the power frequency AC voltage signal according to the pulse width modulation signal to obtain a modulation signal and output the power frequency AC voltage signal and the modulation signal to the inverter circuit to trigger the inverter circuit to convert the DC voltage signal into the AC voltage signal.

    EP0951585A4 -
    6.
    发明公开
    EP0951585A4 - 失效
    EP0951585A4 - Google专利

    公开(公告)号:EP0951585A4

    公开(公告)日:1999-11-10

    申请号:EP97947406

    申请日:1997-11-04

    IPC分类号: H01J1/13 H01J1/30 C25B11/00

    摘要: A metal surface (1) is coated with a heterocyclic multidentate ligand compound (2), reducing work-function and facilitating the emission of electrons.

    摘要翻译: 金属表面(1)涂有杂环多齿配体化合物(2),降低了功函数并促进了电子的发射。

    Method and apparatus for quickly heating a vacuum tube cathode
    8.
    发明公开
    Method and apparatus for quickly heating a vacuum tube cathode 失效
    Verfahren undGerätzur schnellen Heizung der Kathode einerVakuumröhre。

    公开(公告)号:EP0214798A2

    公开(公告)日:1987-03-18

    申请号:EP86306503.3

    申请日:1986-08-21

    IPC分类号: H01J1/13

    CPC分类号: H01J1/135 H01J1/13 H01J23/04

    摘要: Disclosed are a method and apparatus for rapidly heating a thermionic vacuum tube cathode, thereby enabling the vacuum tube to be placed in useful operation shortly after the tube is switched on. Rapid heating of the cathode is achieved by passing current through the cathode, thereby directly heating it. Simultaneously, the cathode is also heated by an indirect radiant heater and by electron bombardment by electrons emitted from the heater. When the cathode reaches its operating temperature, the direct heating current and the electron bombardment are stopped and the cathode is maintained at its operating temperature by the indirect heater alone. Cathode warm-up times of less than 1 second may be attained using this invention.

    摘要翻译: 公开了一种用于快速加热热离子真空管阴极的方法和装置,从而使真空管能够在管接通之后立即进行有用的操作。 通过使电流通过阴极来实现阴极的快速加热,从而直接加热阴极。 同时,阴极也被间接辐射加热器加热,并通过从加热器发射的电子进行电子轰击。 当阴极达到其工作温度时,直接加热电流和电子轰击停止,阴极通过间接加热器单独维持在其工作温度。 使用本发明可以获得小于1秒的阴极预热时间。