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Conference Paper
An Active Current-Control Unit Composed of Cascade Transistors for Extremely Stabilizing Emission Currents from Carbon Nanotube Field Emitters
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- Authors
- Jeong-Woong Lee, Hyojin Jeon, Eunsol Go, Yoon-Ho Song, Jin-Woo Jeong, Jun-Tae Kang, Jae-Woo Kim, Young Chul Choi, Sora Park, Sunghee Kim, Ji-Hwan Yeon, Yoon-Ho Song
- Issue Date
- 2017-07
- Citation
- International Vacuum Nanoelectronics Conference (IVNC) 2017, pp.208-209
- Publisher
- IEEE
- Language
- English
- Type
- Conference Paper
- Abstract
- 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 Keywords
- Active current, Carbon nano-tube(CNT), Control Unit, Current Control, Field Emission, High Voltage, Long pulse, X-ray sources, emission current, field emitter, fully vacuum-sealed