Electric gas ignitor utilizing a fiber ignition element
    1.
    发明授权
    Electric gas ignitor utilizing a fiber ignition element 失效
    电气点火器利用纤维点火元件

    公开(公告)号:US4206492A

    公开(公告)日:1980-06-03

    申请号:US658447

    申请日:1976-02-17

    IPC分类号: F02B75/02 H01C3/00

    CPC分类号: H01C3/00 F02B2075/027

    摘要: An electric gas ignitor is disclosed having a gas igniting fiber comprising a core of conductive refractory material and an outer, high strength, oxidation resistant coating. One aspect of the invention concerns a primary current path defined by at least a portion of the fiber core and comprising a material having a highly uniform resistance per unit length. A substantially uniform temperature distribution is thereby promoted on the fiber surface and the formation of localized "hot spots" is inhibited. The primary current path is preferably an anisotropic material having a preferred crystal orientation which uniformly conducts electricity along the fiber length.A second aspect of the invention is directed to the inclusion of a diffusion-barrier material between the fiber core and the oxidation-resistant coating to prevent diffusion of the core and coating, which changes the fiber operating temperature and decreases its operating life. The diffusion-barrier material is preferably refractory, closely packed, dense and, more perferably, is an anisotropic material having its preferred crystal orientation in a direction which inhibits the diffusion while forming the primary current path of the fiber.

    摘要翻译: 公开了一种具有包含导电耐火材料芯和外部高强度抗氧化涂层的气体点燃纤维的电气点火器。 本发明的一个方面涉及由光纤芯的至少一部分限定的初级电流路径,并且包括每单位长度具有高均匀电阻的材料。 从而在纤维表面上促进了基本均匀的温度分布,并且抑制了局部“热点”的形成。 初级电流路径优选为具有沿纤维长度均匀导电的优选晶体取向的各向异性材料。 本发明的第二方面涉及在纤维芯和抗氧化涂层之间包含扩散阻挡材料,以防止芯和涂层的扩散,这改变了纤维的工作温度并降低了其使用寿命。 扩散阻挡材料优选是耐火的,紧密堆积的,致密的,并且更优选的是在形成纤维的初级电流路径的同时抑制扩散的方向上具有其优选的晶体取向的各向异性材料。

    Radioactive starting aids for electrodeless light sources
    2.
    发明授权
    Radioactive starting aids for electrodeless light sources 失效
    用于无电极光源的放射性助剂

    公开(公告)号:US4247800A

    公开(公告)日:1981-01-27

    申请号:US8807

    申请日:1979-02-02

    CPC分类号: H01J65/06

    摘要: Radioactive materials are used to assist in starting a discharge in an electrodeless light source. The radioactive emissions predispose on the inner surface of the lamp envelope loosely bound charges which thereafter assist in initiating discharge. The radioactive material can be enclosed within the lamp envelope in gaseous or non-gaseous form. Preferred materials are krypton 85 and americium 241. In addition, the radioactive material can be dispersed in the lamp envelope material or can be a pellet imbedded in the envelope material. Finally, the radioactive material can be located in the termination fixture. Sources of alpha particles, beta particles, or gamma rays are suitable. Because charges accumulate with time on the inner surface of the lamp envelope, activity levels as low as 10.sup.-8 curie are effective as starting aids.

    摘要翻译: 放射性物质用于协助在无电极光源中开始放电。 放射性排放易于在灯管的内表面松动地捆扎,此后有助于启动放电。 放射性物质可以以气态或非气态形式封装在灯管内。 优选的材料是氪85和ium 241。此外,放射性物质可以分散在灯管材料中,或者可以是嵌入包封材料中的颗粒。 最后,放射性物质可以位于终端夹具中。 α粒子,β粒子或γ射线的来源是合适的。 因为电荷在灯管内表面积累的电荷,所以低至10-8居里的活性水平作为助燃剂是有效的。

    Electrodeless light source having rare earth molecular continua
    3.
    发明授权
    Electrodeless light source having rare earth molecular continua 失效
    具有稀土分子连续性的无电极光源

    公开(公告)号:US4206387A

    公开(公告)日:1980-06-03

    申请号:US941811

    申请日:1978-09-11

    IPC分类号: H01J65/04 H05B41/16 H05B41/24

    CPC分类号: H01J65/048

    摘要: An electrodeless lamp apparatus includes an electrodeless, light-transmitting, envelope for housing a rare-earth compound fill, and a termination fixture, electrodelessly coupled to the envelope, adapted to create an electrical condition for exciting the fill.The fill can include mercury and a noble gas, such as argon.The rare-earth compound is preferably a rare-earth halide, such as dysprosium iodide and holmium iodide.The fill can include a halide of mercury, such as HgBr.sub.2.One example of a fill is Hg/DyI.sub.3 /HoI.sub.3 /CsI/HgBr.sub.2 /Ar.A second example of a fill is Hg/NdI.sub.3 /DyI.sub.3 /CsI/Ar.A third example of a fill is Hg/Pr/DyI.sub.3 /HgI.sub.2 /CsI/HgBr.sub.2 /Ar.A fourth example of a fill is Hg/Yb/CsCl/HgCl.sub.2 /Ar.

    摘要翻译: 无电极灯装置包括用于容纳稀土化合物填充物的无电极,透光的外壳,以及无电极耦合到外壳的终端固定装置,适于创建用于激发填充物的电气条件。

    Solid state microwave power source for use in an electrodeless light
source
    4.
    发明授权
    Solid state microwave power source for use in an electrodeless light source 失效
    用于无电极光源的固态微波电源

    公开(公告)号:US4070603A

    公开(公告)日:1978-01-24

    申请号:US705324

    申请日:1976-07-14

    IPC分类号: H01J65/04 H05B41/16 H05B41/24

    CPC分类号: H05B41/24 H01J65/044

    摘要: A solid state microwave power source for providing microwave power to excite an electrodeless lamp is designed so as to provide an acceptable impedance matching characteristic during lamp warm-up when the lamp impedance is high and changing with temperature to provide sufficient power to the lamp during the running state when the lamp impedance is matched to the source. The microwave power source includes a dc power source providing power at variable levels, a microwave oscillator receiving the dc power to produce a microwave signal, and a microwave power amplifier. The oscillator has a transistor in a common base configuration, a microstrip capacitive feedback element to sustain oscillations, and an output impedance matching arrangement formed from microstrip. The microwave signal is amplified in the solid state power amplifier having a power transistor in a common base configuration. An impedance matching section between the amplifier and the input of a termination fixture for the lamp includes a length of transmission line which transforms the input impedance of the fixture to a level at the collector of the power transistor in the amplifier so as to maximize the power delivered to the lamp at reduced power levels while maintaining the collector voltage within a safe limit.

    摘要翻译: 设置用于提供微波功率以激发无电极灯的固态微波功率源,以在灯预热时提供可接受的阻抗匹配特性,当灯阻抗高时,随温度变化,以在灯管期间为灯提供足够的功率 当灯阻抗与源匹配时的运行状态。 微波电源包括提供可变电平的功率的直流电源,接收直流功率以产生微波信号的微波振荡器和微波功率放大器。 振荡器具有公共基极配置的晶体管,用于维持振荡的微带电容反馈元件以及由微带形成的输出阻抗匹配装置。 微波信号在具有公共基本配置的功率晶体管的固态功率放大器中被放大。 放大器和用于灯的终端夹具的输入之间的阻抗匹配部分包括传输线的一段长度,其将固定装置的输入阻抗转换成放大器中的功率晶体管的集电极处的电平,以使功率最大化 在降低功率水平的同时将集电极电压维持在安全限度内。

    Staircase ramp voltage generating apparatus with energy reuse
    8.
    发明授权
    Staircase ramp voltage generating apparatus with energy reuse 失效
    具有能量再利用的楼梯斜坡电压发生装置

    公开(公告)号:US4654542A

    公开(公告)日:1987-03-31

    申请号:US750220

    申请日:1985-07-01

    IPC分类号: G09G3/30 H03K4/02

    摘要: Apparatus for repeatedly generating a staircase ramp voltage pulse on a bus connected to a capacitive load employing a set of DC voltage sources, each producing a voltage of a step in the staircase ramp voltage. A storage capacitor is connected between the output terminal of each voltage source and ground. An FET switch is connected between each of the output terminals and the bus and between ground and the bus. A timing circuit closes each of the FET switches in order to produce a staircase ramp voltage on the bus charging the capacitive load. When it is desired to discharge the capacitive load, the timing circuit then closes the switches in reverse order. Each storage capacitor is charged by the discharging capacitive load to a voltage above the voltage of its associated voltage source. The energy thus stored is used during the next cycle to contribute to the energy required to charge the capacitive load on the bus.

    摘要翻译: 一种用于在连接到使用一组DC电压源的电容性负载的总线上重复产生阶梯斜坡电压脉冲的装置,每一个产生梯级电压中的台阶电压。 存储电容器连接在每个电压源的输出端子和地之间。 每个输出端子和总线之间以及地面和总线之间连接一个FET开关。 定时电路关闭每个FET开关,以便在对容性负载充电的总线上产生阶梯斜坡电压。 当期望放电容性负载时,定时电路然后以相反的顺序闭合开关。 每个存储电容器由放电容性负载充电到高于其相关电压源的电压的电压。 这样存储的能量在下一周期中被使用以有助于为总线上的容性负载充电所需的能量。

    Eccentric termination fixture for an electrodeless light
    9.
    发明授权
    Eccentric termination fixture for an electrodeless light 失效
    用于无电极灯的偏心终端夹具

    公开(公告)号:US3995195A

    公开(公告)日:1976-11-30

    申请号:US632416

    申请日:1975-11-17

    IPC分类号: H01J65/04 H01J61/56

    CPC分类号: H01J65/044 H01J65/046

    摘要: In a light source in which an electrodeless lamp is excited by high frequency power coupled into a lamp termination fixture having an inner and outer conductor, the fixture has a dynamically variable characteristic impedance, thereby facilitating dynamic matching of the variable impedance of the lamp during the lamp-off to lamp-run conditions to the output impedance of the power source. This feature is possible because the position of the inner conductor with respect to the outer conductor is controlled as a function of the heat generated within the fixture. The inner conductor is made of a conductive material having a non-uniform coefficient of thermal expansion. When the fixture is cold, the lamp and the lamp-coupled end of the inner conductor are substantially concentric to the outer conductor thereby creating a high characteristic impedance to match the high starting lamp impedance to the source impedance. When the lamp is running, the inner conductor and lamp become eccentric to the outer conductor due to the heat generated in the fixture, thereby reducing the fixture characteristic impedance to match the lower lamp impedance to the output impedance of the source.

    摘要翻译: 在其中无电极灯被耦合到具有内导体和外导体的灯端接固定器的高频功率激发的光源中,该固定装置具有动态可变的特性阻抗,从而有助于灯的可变阻抗的动态匹配 灯灭灯灯运行条件到电源的输出阻抗。 该特征是可能的,因为内部导体相对于外部导体的位置被控制为在夹具内产生的热的函数。 内导体由具有不均匀热膨胀系数的导电材料制成。 当灯具冷却时,内部导体的灯和灯联接端基本上与外部导体同心,从而产生高的特性阻抗,以使高起动灯阻抗与源阻抗相匹配。 当灯运行时,由于灯具中产生的热量,内部导体和灯变得偏心于外部导体,从而降低灯具特性阻抗,使灯泡的阻抗与源的输出阻抗相匹配。