Working methods for realizing a plurality of hollow cathode circuit connected in parallel and the stable operation of the circuit
2014
A plurality of hollow cathode for realizing a stable parallel operation circuit and operating method of the operating circuit, are used for self-sustaining plasma thruster hollow cathode art. Fire solve difficulties during the hollow cathode used in parallel, steady-state operating current severe unevenness, which leads to a problem of easily extinguished hollow cathode. It includes N units, each comprising a hollow cathode, electrode contact holding power, a diode, heating power and slide rheostat Rl; hollow cathode cathode tubes embedded throttle ring, holds contact with the anode connected to the positive supply pole of the diode, the cathode of the diode as a second output of the unit with the contact holding hollow cathode electrode connected to a hollow cathode tube cathode contact simultaneously with the holding power of the negative electrode, a negative electrode heating power and the resistor R1 has one end connected by sliding, the positive electrode and the hollow cathode heating power supply the heater is connected, through the N main supply pipe branched supply conduit communicate with the hollow cathode tube of the N cathode. The present invention is applied to the plasma thruster.
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