| Since entering the electrical era, electromagnetic pulse protection become more and more important. Generally speaking, using the gas spark as the protection means for the electromagnetic pulse protection. Typically the gas discharge tube as a first-level of protective equipment, while the PCB gap spark as the second-level protection measure. Suppress electromagnetic pulse through a two-stage protection, in order to achieve the protective effect of device avoiding from electromagnetic pulse. The spark gap can not only as an effective means to lightning electromagnetic pulse protection, while an electronic circuit for electrostatic discharge protection device.The issue with gas spark gap electromagnetic pulse response is modeled as a research target. Under certain atmospheric environment getting response measured data by using different waveforms of electromagnetic pulses acting on different physical parameters characteristic of the gas spark gap. Statistical analysis of the law of the gas discharge spark gap under electromagnetic pulses and getting Optimization design of PCB gas spark gap. Its contents include:Research the response characteristics of gas discharge and statistical research under electromagnetic pulses. By electromagnetic pulse generator, to produce different types of electromagnetic pulse, testing response of gas discharge tube, and analyzing the results statistically.By the same rectangular electromagnetic of pulse effect in experiments, getting response time waveform of gas discharge, by means of mathematical analysis, summed up its response, basing on a large number of experiments with the gas discharge response time, statistical analysis to obtain the distribution characteristics. Through a series of experimental studies and analysis, finally get the conclusion:response time of gas spark gap under the nanosecond electromagnetic pulse response of normal distribution That conclusion will provide reference for the design of electromagnetic pulse protection circuit and electrostatic discharge protection circuit.Design the structure of the full-wave simulation and optimization of PCB gas spark gap. By conducting PCB spark gap structure of the full-wave simulation, simulating the gas breakdown process works of spark gaps. By researching PCB gas spark gap discharge characteristics and the relationship between structure and material properties. By researching the impact of gas breakdown voltage and the response time and different structural properties at tip voltage distribution of the electromagnetic pulse excitation, transmission lines of different material.By computational electromagnetic simulation and experimental testing methods, exploration the design methods of PCB gap spark in breakdown voltage, fast response, and the lower capacitance. |
