상세정보
학술대회
An Active Current-Control Unit Composed of Cascade Transistors for Extremely Stabilizing Emission Currents from Carbon Nanotube Field Emitters
- 발행일
- 201707
- 출처
- International Vacuum Nanoelectronics Conference (IVNC) 2017, pp.208-209
- 협약과제
- 17JB1500, 신개념의 디지털 엑스선 소스와 이를 활용한 차세대 무압박, 무고통 유방 CT 기술 개발, 송윤호
- 초록
- We propose an advanced active current-control (ACC) unit composed of two cascade transistors for extremely stabilizing field emission currents. The upper transistor connected to the cathode modulates high voltages for field emission while the other one regulates emission current stably. Using the ACC unit developed, very stable emission currents were achieved from the fully vacuum-sealed x-ray tube with carbon nanotube field emitters for long pulse sequence. The advanced ACC unit could provide commercial stability and reliability of field emission x-ray sources even in high voltage and/or high duty environments.
- KSP 제안 키워드
- Active current, Carbon nano-tube(CNT), Control Unit, Current Control, High Voltage, Long pulse, X-ray sources, emission current, field emission, field emitter, fully vacuum-sealed