一个简单,低成本的固态超快速高压开关的设计
Ziwen Zhou1, Yifan Li1, Zhaojun Liu1
1Tianjin International Center for Nanoparticles and Nanosystems, Tianjin University, 92 Weijin Road, Nankai District, Tianjin 300072, China.
The Review of scientific instruments
|October 20, 2023
概括
这项研究介绍了一种低成本的5000V双极固态超高速高压开关 (UFHVS),用于质谱学. 这种新的设计确保了高精度的离子操纵,具有快速切换时间和最小的电压衰减.
科学领域:
- 电气工程 电气工程
- 分析化学 分析化学
- 材料科学 材料科学 材料科学
背景情况:
- 超高速高压开关 (UFHVS) 对于飞行时间质谱仪中精确的离子控制至关重要.
- 关键性能指标包括可调节的脉冲宽度,高振幅和快速过渡时间,以及成本效益.
研究的目的:
- 开发和展示一个具有成本效益和易于制造的5000V双极固态UFHVS.
- 提高UFHVS在高分辨率质谱学中的性能和适用性.
主要方法:
- 一个双脉冲变压器被用于高低压隔离.
- 系列连接的cascode碳酸场效应晶体管 (SiC FETs) 在推拉配置中使用.
- 实施了一种新的驱动方案,可以在没有变压器磁和的情况下传输长距离驱动信号.
主要成果:
- 开发的UFHVS实现了5000V的输出电压,脉冲宽度为150μs.
- 非常快的上升和下降时间分别为8.5ns和18.3ns.
- 开关显示电压衰减微不足道,确保信号完整性.
结论:
- 提出的UFHVS为高分辨率质谱应用提供了实用和经济的解决方案.
- 该设计成功地平衡了高性能与低成本和易于制造的平衡.
- 这一进步促进了质谱仪中改善的离子加速,减速和时间聚焦.
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