| 微震仪放大器级间耦合电路对初动的影响 |
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| 引用本文： | 陈洪军.微震仪放大器级间耦合电路对初动的影响[J].地震地磁观测与研究,1992,13(4):69-75. |
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| 作者姓名： | 陈洪军 |
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| 作者单位： | 南通地震台 中国江苏省 |
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| 摘 要： | 本文通过对RC耦合电路的初动特牲进行理论推导,并对67-1和DDF-2放大器耦合电路进行验算,得出结果:DD-1地震仪初动特性不及熏烟记录地震仪,主要是由放大器级间耦合电路时间常数偏小所致。实验表明,增大DDF-2放大器的耦合电容,可以明显改善初动特性,但RC时间常数过大,因过渡过程的作用,波形失真也相应增大。
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| 关 键 词： | 耦合电路 放大器级间 地震仪 |
EFFECT OF COUPLED CIRCUITS BETWEEN AMPLIFIER STAGES ON SEISMIC ONSET |
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| Chen Hongjun Nantong Seismic Station,Jiangsu Province,Natong ,China.EFFECT OF COUPLED CIRCUITS BETWEEN AMPLIFIER STAGES ON SEISMIC ONSET[J].Seismological and Geomagnetic Observation and Research,1992,13(4):69-75. |
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| Authors: | Chen Hongjun Nantong Seismic Station Jiangsu Province Natong China |
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| Institution: | Chen Hongjun Nantong Seismic Station,Jiangsu Province,Natong 226006,China |
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| Abstract: | We derived theoretically the onset featurw of RC coupled circuits, calculatedand checked the coupled circuits of the 67-1 amplifier and DDF-2 amplifier.wefound that the onset feature of DD-1 seismograph is inferior to that of recordingon smoked paper because the time constant of the coupled circuits between ampli-fiers is somewhat too small. We also found that if we increased the couplingcapacity of the DDF-2 amplifier, the onset feature clearly improved, while thewaveform distortion would increase correspondingly. |
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| Keywords: | Onset feature Coupled circuits Amplifier stage |
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