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    • 1. 发明授权
    • Prevention of arcing in power supplies
    • 防止电力电弧
    • US06570389B2
    • 2003-05-27
    • US09881996
    • 2001-06-15
    • Prabjit SinghGeorge T. GalyonLenas J. HedlundSteven MazzucaVictor A. RonkenYiping Yao
    • Prabjit SinghGeorge T. GalyonLenas J. HedlundSteven MazzucaVictor A. RonkenYiping Yao
    • G01N2762
    • G01N27/92G01R31/1227G01R31/40
    • A power supply to be tested is placed in a vacuum chamber; the power supply is turned on and gas pressure in the chamber is reduced. As the gas pressure is reduced below 1 atmosphere, the breakdown voltage decreases; when the breakdown voltage decreases to the value of the applied voltage, arcing occurs as long as the applied voltage is greater than a minima. When a site arcs, the site is noted; the power supply is removed from the vacuum chamber; the arc site is conformally coated and the coated cured. Thereafter, the power supply is returned to the vacuum chamber and the test process repeated until the power supply no longer arcs. Thus the partial pressure test can identify the sites that have a possibility of arcing in the field and the design of the power supply modified by use of one or more conformal coatings or by otherwise changing the configuration of the power supply.
    • 要测试的电源放置在真空室中; 电源打开,腔室内的气体压力降低。 当气体压力降低到1个大气压以下时,击穿电压降低; 当击穿电压降低到施加电压的值时,只要施加的电压大于最小值,就会发生放电。 当站点弧时,站点被注意到; 电源从真空室中取出; 电弧部位被保形涂覆并涂覆固化。 此后,电源返回到真空室,重复测试过程,直到电源不再弧。 因此,分压测试可以识别在现场具有电弧可能性的场所,以及通过使用一个或多个保形涂层修改的电源的设计,或通过另外改变电源的配置。