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离子火箭的阴极一触持极间形成的低气压下弧光自持放电.伏安特性曲线是负阻曲线.若用稳压电源作触持极电源.有烧坏电源和阴极的危险:如采用稳流电源.则具有自挖作用.能维持弧光自持放电。文章详细介绍了触持极稳流电源的电路原理。对稳流型触持极电源进行了实验.一次电源在±20%范围内波动.电源输出稳定度优于1%。效率达80%.根据阴极性能、气体的种类、密度等情况的变化.选职稳流电源的稳流点.即弧光自持放电的工作点.调整稳流点.只需调整采样电阻.工作可靠.
Ion rocket cathode and a low voltage between the formation of a self-sustaining arc discharge. Volt-ampere characteristic curve is a negative resistance curve. If the power supply for the power supply with a very stable. Burned power and the cathode danger: Flow power is self-digging can maintain the arc self-sustained discharge. The article details the circuit principle of the very steady flow power supply. Experiments have been carried out on a steady flow type of power supply, with a power supply fluctuating within ± 20%. The output stability of the power supply is better than 1%. The efficiency of 80% .According to the cathode performance, the type of gas, density and other changes.Selected current steady flow power supply steady flow point.Aluminum self-sustaining discharge operating point.Remove the steady flow point.Only need to adjust the sampling resistance. Reliable work. .