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公开(公告)号：US4206492A
公开(公告)日：1980-06-03
申请号：US658447
申请日：1976-02-17
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。
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公开(公告)号：US4189661A
公开(公告)日：1980-02-19
申请号：US959823
申请日：1978-11-13
申请人： Paul O. Haugsjaa , Edward F. White
发明人： Paul O. Haugsjaa , Edward F. White
CPC分类号： H01J65/044 , H01J65/046
摘要： An electrodeless fluorescent light source has an electrodeless lamp mounted in a termination fixture which includes an inner conductor and an outer conductor disposed around the inner conductor and is coupled to a high frequency power source. Power is coupled to an ultraviolet-producing low pressure discharge in the electrodeless lamp which acts as a termination load within the termination fixture. A phosphor coating on the inner surface of the electrodeless lamp emits visible light upon excitation by ultraviolet radiation. Alternatively, the phosphor coating can be on the inner surface of a transparent envelope which forms part of the termination fixture. In this case, the phosphor coated envelope can be removable from the light source. The light source can be dimmed by reducing the microwave power input. Frequency of operation is typically from 902 MHz to 928 MHz.
摘要翻译： 无电极荧光光源具有安装在终端固定装置中的无电极灯，其包括设置在内导体周围的内导体和外导体，并与高频电源耦合。 功率耦合到无极灯中的紫外线产生的低压放电，其作为终端固定装置内的终端负载。 无电极灯的内表面上的荧光体涂层在通过紫外线辐射激发时发出可见光。 或者，磷光体涂层可以在构成终端固定装置的一部分的透明封套的内表面上。 在这种情况下，可以从光源移除磷光体涂层的外壳。 通过减少微波功率输入可以使光源变暗。 操作频率通常为902 MHz至928 MHz。
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23.发明授权Continuous automatic starting assist UV circuit for microwave powered electrodeless lamps 失效连续自动启动辅助紫外线电路，用于微波供电的无电光源
公开(公告)号：US4053814A
公开(公告)日：1977-10-11
申请号：US705328
申请日：1976-07-14
CPC分类号： H01J65/044 , H05B41/24
摘要： A starting assist control circuit for an electrodeless light source in which a UV source for assisting in starting an electrodeless lamp is coupled in series with the DC supply for a microwave power source for the lamp so that a reduced DC voltage is supplied to the microwave power source at lamp starting. An electronic circuit is provided which continuously decreases the DC current through the UV source and increases the DC voltage for the microwave power source in relation to the amount of light generated by the electrodeless lamp. More specifically, the emitter and collector of a transistor are coupled across the UV source to provide a shunt path and the potential of the base of the transistor is controlled by a photosensitive resistor which senses the amount of light from the lamp. As the lamp generates increased light, the transistor becomes more conductive, thereby continuously decreasing current to the UV source and increasing voltage to the microwave power source.
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公开(公告)号：US4002944A
公开(公告)日：1977-01-11
申请号：US632439
申请日：1975-11-17
CPC分类号： H01J65/046
摘要： In a light source excited with power at a high frequency, an electrodeless lamp is located in a termination fixture comprising an inner and outer conductor, the lamp being located at the end of the inner conductor. An internal tuning element is located within the fixture for creating a resonant condition when the lamp is to be started to create a maximum electric field for initiating breakdown and excitation of the fill material within the lamp. The tuner may comprise a variable capacitance coupled in parallel across the conductors at the power input end of the fixture or a variable inductance connected across the conductors at the lamp end of the fixture.
摘要翻译： 在以高频激励的光源中，无电极灯位于包括内部和外部导体的终端固定器中，该灯位于内部导体的端部。 内部调谐元件位于固定装置内，用于当灯启动时产生共振条件，以产生用于启动灯内的填充材料的击穿和激发的最大电场。 调谐器可以包括在固定装置的电力输入端处的导体上并联耦合的可变电容或者在固定装置的灯端处连接在导体上的可变电感。
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公开(公告)号：US4002943A
公开(公告)日：1977-01-11
申请号：US598089
申请日：1975-07-22
申请人： Robert J. Regan , Paul O. Haugsjaa
发明人： Robert J. Regan , Paul O. Haugsjaa
摘要： A tunable microwave cavity permits adjustment of the penetration of a power coupling probe into the main cavity by adjusting a grounded element of the cavity. A pair of conductive tubes are in telescoping relationship and have mutually engaging threads so that a rotation of one tube causes one tube to pass over the other. A first one of the tubes is mounted to the main cavity and around an aperture in the cavity wall. A power coupling connector is mounted with the second tube, and a rotating electrical contactor is disposed between the outer conductor of the connector and the second tube so that the connector does not rotate with the second tube. A power coupling probe affixed to the end of the inner conductor of the connector assumes various penetration depths within the main cavity in response to a rotation of the second tube. The cavity may be used in a light source including a high frequency power source and an electrodeless lamp disposed in the main cavity.
摘要翻译： 可调谐微波腔允许通过调节空腔的接地元件来调节功率耦合探针到主腔中的穿透度。 一对导电管呈伸缩关系并且具有相互接合的螺纹，使得一个管的旋转导致一个管超过另一个管。 管中的第一个安装到主腔和围绕腔壁中的孔。 电源耦合连接器安装有第二管，并且旋转电接触器设置在连接器的外导体和第二管之间，使得连接器不与第二管旋转。 固定到连接器内导体端部的电力耦合探头响应于第二管的旋转而在主空腔内呈现各种穿透深度。 空腔可以用在包括设置在主腔中的高频电源和无电极灯的光源中。
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