본 발명은 고전압 펄스를 인가하는 펄스 구동 고전압 전원부 없이 고전압 펄스 구동을 가능하게 하는 전계 방출 장치에 관한 것으로, 본 전계 방출 장치는 전계 에미터를 포함하는 제1 전극; 상기 제1 전극과 서로 평행하게 배치되어 상기 전계 에미터에서 방출된 전자를 가속시키는 제2 전극; 상기 제2 전극에 연결되어 상기 전계 에미터의 전계 방출에 필요한 DC 전압을 상기 제2 전극에 인가하는 고전압 전원부; 및 상기 제1 전극에 연결되어 상기 제2 전극에 DC 전압이 인가된 상태에서 상기 제1 전극에 흐르는 전계 방출 전류를 제어하는 전류 제어부를 포함한다. 이에 따라, DC 전압을 인가하는 고전압 전원부와 전계 방출 전류를 제어하는 전류 제어부를 포함함으로써, 제1 전극으로 인가하는 전류를 제어하여 고전압 펄스 구동을 가능하게 할 수 있다.
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