冷陰極觸發(fā)管宏模型設(shè)計

為了解決在EDA軟件中無法仿真觸發(fā)管的問題，基于Spice語法提出了一個冷陰極充氣觸發(fā)管宏模型。基于氣體放電的米克公式，模型對觸發(fā)管的自擊穿特性進(jìn)行了描述，在PSpice軟件中用一個表格宏模型和電壓控制模塊來反映觸發(fā)管的觸發(fā)特性和正向?qū)ㄟ^程，并且把影響觸發(fā)管自擊穿特性的非電物理因素諸如管內(nèi)氣壓、主電極距離和管內(nèi)氣體電離參數(shù)轉(zhuǎn)化為電壓后引入模型。經(jīng)過相關(guān)的測試電路驗證后表明：該模型能反映觸發(fā)管的基本特性，可以達(dá)到觸發(fā)管的精度要求，能夠初步滿足相關(guān)電路的分析與研究工作。

Abstract:

?In order to solve the problems of simulating the trigatron in the EDA, a practical macro model of cold cathode trigatron is developed based on Spice syntax. In the model, the properties of self breakdown is depicted according to the Mick formula of the gas discharge theories , and the triggering and forward conducting process of this device are described by a table macro model and a voltage controlled part in the PSpice. Also, some factors, such as atmospheric pressure of the gap, the distance between primary electrodes and the ionization coefficient of the gas, which are not the electrical variables but affect the self breakdown property greatly, are analyzed, and then introduced into the macro model by changing them into electrical parameters. Experiment results of simulation tests indicate that the model performs well, and can be used for the corresponding circuit analysis and research work.