高壓脈沖電容分壓器設計

摘要：在介紹電容分壓器基本原理的基礎上，分析了脈沖信號時間與電容分壓器測量系統(tǒng)時間常數(shù)的關系。建立分壓器的等效電路圖，對測量系統(tǒng)進行仿真分析，分析表明電容器中的寄生電感和電容對分壓器的影響較大，當他們達到一定的程度會使系統(tǒng)輸出波形的振動劇烈，上升時間變長，輸出波形失真[1]。電容器中的電阻對分壓器的性能有一定的影響，在設計高壓脈沖電容分壓器時要適當給予考慮。通過改變等效電路中的各個參數(shù)，分析不同參數(shù)對分壓器測量性能的影響，對分壓器的結構進行了優(yōu)化。設計的電容分壓器的分壓比為2100。
關鍵詞：分壓器；電容分壓器；電壓測量；響應時間；

Design of the Capacitor Divider for Measuring of High
Voltage Pulse

Abstract： The relation between the pulse signal’s and the measurement system’s time constant of capacity voltage divider are analyzed on the base of the introduction of fundamental principle of capacity voltage divider. Equivalent circuit  of the voltage divider is established in order to simulate the measurement system, the simulation analysis showed that the resistance and capacitance in the capacity have greater effect on capacity voltage divider .The output waveform of the system will vibrate intensively ,the rising time will become longer ,and the output waveform will be distorted when they reach a certain extent .The resistance of the capacity has a certain influence on the function of voltage divider which should be considered in designing a high voltage pulse capacity voltage divider .The voltage divider’s structure can be optimized by changing the circuit’s  parameters and analyzing the influence of different parameters. The voltage ratio of the designed capacitance voltage divider is 2100.
Key words：potentiometer；capacitor dividervoltage；measure；response time