公开(公告)号：US09207208B2

公开(公告)日：2015-12-08

申请号：US14473793

申请日：2014-08-29

Applicant: University of Electronic Science and Technology of China

Inventor： Qishui Zhong ,  Hui Li ,  Dajin Chen ,  Baihua Li

IPC: H03K17/10 ,  G01N27/62 ,  H03K17/691

CPC classification number: G01N27/624 ,  H03K7/08 ,  H03K17/102 ,  H03K17/691

Abstract: An asymmetric waveform pulse generator comprises a metallic oxide semiconductor field effect transistor (MOSFET) bridge circuit, which includes a plurality of MOSFETs for inverting high voltage DC voltage to asymmetric waveform pulses. The asymmetric waveform pulse generator further comprises a pulse-width modulating (PWM) circuit for generating PWM signals, and a plurality of isolation driving circuits corresponding to the plurality of MOSFETs, for controlling switching on/off of the plurality of MOSFETs in the MOSFET bridge circuit based on the PWM signals generated by the PWM circuit. Each of the isolation driving circuits comprises an isolation transformer for isolating the MOSFET bridge circuit from the PWM circuit. A FAIMS ion detector employing the asymmetric waveform pulse generator is also disclosed.

Abstract translation: 非对称波形脉冲发生器包括金属氧化物半导体场效应晶体管（MOSFET）桥接电路，其包括用于将高压DC电压转换为非对称波形脉冲的多个MOSFET。 非对称波形脉冲发生器还包括用于产生PWM信号的脉冲宽度调制（PWM）电路和对应于多个MOSFET的多个隔离驱动电路，用于控制MOSFET桥中的多个MOSFET的导通/截止 基于由PWM电路产生的PWM信号的电路。 每个隔离驱动电路包括用于将MOSFET桥接电路与PWM电路隔离的隔离变压器。 还公开了采用非对称波形脉冲发生器的FAIMS离子检测器。

公开(公告)号：US20140367563A1

公开(公告)日：2014-12-18

申请号：US14473793

申请日：2014-08-29

Applicant: University of Electronic Science and Technology of China

Inventor： Qishui Zhong ,  Hui Li ,  Dajin Chen ,  Baihua Li

IPC: G01N27/62 ,  H02M7/5395 ,  H02M1/32 ,  H01J49/02

CPC classification number: G01N27/624 ,  H03K7/08 ,  H03K17/102 ,  H03K17/691

Abstract: An asymmetric waveform pulse generator comprises a metallic oxide semiconductor field effect transistor (MOSFET) bridge circuit, which includes a plurality of MOSFETs for inverting high voltage DC voltage to asymmetric waveform pulses. The asymmetric waveform pulse generator further comprises a pulse-width modulating (PWM) circuit for generating PWM signals, and a plurality of isolation driving circuits corresponding to the plurality of MOSFETs, for controlling switching on/off of the plurality of MOSFETs in the MOSFET bridge circuit based on the PWM signals generated by the PWM circuit. Each of the isolation driving circuits comprises an isolation transformer for isolating the MOSFET bridge circuit from the PWM circuit. A FAIMS ion detector employing the asymmetric waveform pulse generator is also disclosed.

Abstract translation: 非对称波形脉冲发生器包括金属氧化物半导体场效应晶体管（MOSFET）桥接电路，其包括用于将高压DC电压转换为非对称波形脉冲的多个MOSFET。 非对称波形脉冲发生器还包括用于产生PWM信号的脉冲宽度调制（PWM）电路和对应于多个MOSFET的多个隔离驱动电路，用于控制MOSFET桥中的多个MOSFET的导通/截止 基于由PWM电路产生的PWM信号的电路。 每个隔离驱动电路包括用于将MOSFET桥接电路与PWM电路隔离的隔离变压器。 还公开了采用非对称波形脉冲发生器的FAIMS离子检测器。