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微型半导体桥临界爆发及发火电流特性研究 被引量:3
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作者 杨贵丽 焦清介 沈瑞琪 《南京理工大学学报》 EI CAS CSCD 北大核心 2012年第3期476-481,共6页
为获得恒流激励下微型半导体桥的临界爆发和发火电流特性,研究了微型半导体桥换能元和换能元与斯蒂芬酸铅组成的发火件。利用高速示波器测试其在不同激励电流时的电压和电流信号。利用D-最优化法测试其临界爆发电流和临界发火电流。实... 为获得恒流激励下微型半导体桥的临界爆发和发火电流特性,研究了微型半导体桥换能元和换能元与斯蒂芬酸铅组成的发火件。利用高速示波器测试其在不同激励电流时的电压和电流信号。利用D-最优化法测试其临界爆发电流和临界发火电流。实验现象显示微型半导体桥的固态是其稳定态,熔点可作为临界爆发点,并且发火件临界发火属于电热发火。基于傅里叶传热原理,建立了微型半导体桥的稳态导热模型,推导出临界爆发电流和临界发火电流理论计算公式。临界爆发电流与微型半导体桥电阻的平方根成反比,与面积的1/4次方近似成正比。降低电阻或者增大面积可提高发火件的临界发火电流。实验数据验证了计算公式的可行性与合理性。 展开更多
关键词 微型半导体桥 恒流激励 临界爆发电流 临界发火电流
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Electrothermal energy conversion mechanism of micro-scale semiconductor bridge
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作者 杨贵丽 焦清介 +1 位作者 金兆鑫 徐新春 《Journal of Beijing Institute of Technology》 EI CAS 2011年第1期23-29,共7页
The response characteristics of resistance is observed by the analysis of experimental data of micro scale semiconductor bridge (MSCB) under different voltage inputs. Two critical voltages are found. One is called e... The response characteristics of resistance is observed by the analysis of experimental data of micro scale semiconductor bridge (MSCB) under different voltage inputs. Two critical voltages are found. One is called exploding voltage, above which the MSCB can be melted and vaporized without generating a plasma, and the other is called producing a plasma voltage, above which the MSCB is entirely vaporized, and then the current flows through the vapor producing the plasma. Based on the non Fourier heat conduction theory, the electrothermal energy conversion model is es tablished for the stage from heating to exploding, and then the correlation of MSCB and time is ob tained by graphic calculation. Importantly, the critical exploding voltage and exploding time are also derivate. With the comparison between the analytical result from the theoretical model and that from experimental data, it has been demonstrated that the theoretical model is reasonable and feasible for designing the exploding voltage and exploding time. 展开更多
关键词 micro scale semiconductor bridge energy conversion mechanism capacitor discharge critical exploding voltage exploding time
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