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中文摘要：
针对多级信号电涌保护电路中瞬态抑制二极管经常会被打坏的问题,研究了由气体放电管、电阻或电感、瞬态抑制二极管组成的BNC型信号电涌保护器的保护电路。使用组合波发生器,取不同退耦电阻和退耦电感值,对保护电路进行冲击放电实验,并且使用电流夹钳测量瞬态抑制二极管中流过的电流,使用示波器采集瞬态抑制二极管两端的电压波形,借以计算并分析瞬态抑制二极管消耗的功率。实验结果表明退耦电阻或电感的取值、充电电压的大小会影响瞬态抑制二极管的脉冲功率,随着气体放电管导通,瞬态抑制二极管消耗的功率会出现突变;研究结果还指出,电阻的电感效应和线路中的电感效应是残压波形中产生负向尖峰的原因,而不是由瞬态抑制二极管本身产生的。
英文摘要：
For multi-level signal surge protection circuit transient suppression diodes often being broken, researching on BNC type protection circuit consisting of gas discharge tubes, resistive or inductive, Transient Voltage Suppressor （TVS）. The protection circuit which takes different decoupling resistor and decoupling inductor values is used to impulse discharge experiments by using combination wave generator. Current flowing via TVS tested by current clamp and voltage waveform of TVS collected by oscilloscope for calculating and analyzing the power consumption of TVS diode. Experimental results show that decoupling resistance or decoupling inductance values and the size of the charging voltage will affect the pulse power of TVS diode. With gas discharge tube conduction,TVS diode power consumption mutations will occur.Furthermore, inductance of resistance and line is the cause of negative spikes in residual pressure waveform, rather than by transient suppression diode itself produces.
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