Method of detecting heater resistance independent of contact resistance
    13.
    发明授权
    Method of detecting heater resistance independent of contact resistance 失效
    独立于接触电阻检测加热器电阻的方法

    公开(公告)号:US4020416A

    公开(公告)日:1977-04-26

    申请号:US688475

    申请日:1976-05-20

    CPC classification number: G01R27/14

    Abstract: A constant current is applied through a heater by means of an electrical connector which mates with terminal pins of the tube. The applied current causes a voltage across the heater. A first voltage measurement is made across the heater at a first time. After a predetermined time interval has elapsed, a second voltage measurement is made across the heater. The value of the first voltage measurement is substracted from the value of the second voltage measurement and the value of the difference obtained is compared with a predetermined reference value. If the difference value is less than the reference value, a first nominal value of heater resistance is indicated. If the difference value is greater than the reference value, a second nominal value is indicated. The nominal heater resistance values are detected independent of the electrical connector contact resistance.

    Abstract translation: 通过与管的端子引脚相配合的电连接器通过加热器施加恒定电流。 所施加的电流导致加热器两端的电压。 第一次在加热器上进行第一次电压测量。 在经过预定时间间隔之后,跨加热器进行第二电压测量。 将第一电压测量的值从第二电压测量的值减去,并将获得的差值与预定的参考值进行比较。 如果差值小于参考值,则表示加热器电阻的第一标称值。 如果差值大于参考值,则指示第二标称值。 独立于电气连接器接触电阻检测额定加热器电阻值。

    Fabrication of dark heaters
    14.
    发明授权
    Fabrication of dark heaters 失效
    深加热器的制造

    公开(公告)号:US3852105A

    公开(公告)日:1974-12-03

    申请号:US24224072

    申请日:1972-04-07

    Applicant: RCA CORP

    Inventor: HALE J

    CPC classification number: C23C24/00 H01J9/08

    Abstract: In the dip coating of aluminum oxide coated heaters to provide an outer dark coating consisting essentially of tungsten, a coating bath is used which is substantially rheologically stable, i.e., one in which the rate of settling of the tungsten particles is extremely slow.

    Abstract translation: 在氧化铝涂覆的加热器的浸渍涂层中,提供基本上由钨组成的外部暗涂层,使用基本上流变学稳定的涂层浴,即其中钨颗粒的沉降速度非常慢的涂层浴。

    Method of fabricating a dark heater
    15.
    发明授权
    Method of fabricating a dark heater 失效
    制造深色加热器的方法

    公开(公告)号:US3808043A

    公开(公告)日:1974-04-30

    申请号:US25762572

    申请日:1972-05-30

    Applicant: RCA CORP

    Inventor: HALE J MERRITT G

    CPC classification number: H01J9/08 Y10T428/2944 Y10T428/2949

    Abstract: A refractory metal heater wire is first coated in conventional fashion with a first coating of insulating material, e.g., aluminum oxide. The coating is then dried in air at a temperature below which oxidation of the heater wire occurs for a time sufficient to completely remove all solvents from the first coating. Then, a second coating of a darkening material is applied over the first coating. The complete removal of solvents from the first layer prior to the second layer application step reduces penetration of the material of the second layer into the first layer.

    Abstract translation: 首先以常规方式将耐火金属加热丝线涂覆在绝缘材料例如氧化铝的第一涂层上。 然后将涂层在低于该加热丝的氧化的温度下在空气中干燥足以从第一涂层中完全除去所有溶剂的时间。 然后,将第二涂层的变暗材料涂覆在第一涂层上。 在第二层施加步骤之前从第一层完全除去溶剂减少了第二层材料渗透到第一层中。

    Heaters for hollow cathodes
    20.
    发明授权

    公开(公告)号:US11488799B1

    公开(公告)日:2022-11-01

    申请号:US17871511

    申请日:2022-07-22

    Applicant: PIPL LIMITED

    Inventor: Maxym Polyakov

    Abstract: A heater for a hollow cathode and a method for manufacturing the heater for the hollow cathode are provided. An example heater includes a tube and a thickening located at an edge of the tube. The tube has a side wall of a predetermined thickness and a cut in the side wall. The thickening is configured for attaching two electrical current leads. The tube and the thickening are made of a carbon fiber composite.

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