检波器不同联结方式的频率特性

FREQUENCY CHARACTERISTICS FOR THE SCHEMES OF CONNECTING GEOPHONES

煤炭工业部煤田地球物理勘探队

本文通过测试及理论推导,在对放大器的输入阴抗和检波器的输出阻抗这两个基本物理量作出正确认识的基础上,重点对检波器在不同联结方式下的振动特性进行了分析,并对“饱和”以及表征检波器——放大器电压传输特性的H(f)参数重新进行了探讨。文中给出的一系列检波器振动特性曲线,为野外检波器联结方案的选择提供了依据。

In this paper, the emphasis is put upon the analysis of vibration behaviours of geophones with different connecting schemes on the basis of correct understanding two basic physical quantities-input impedance of amplifier and output impedance of geophone by way of tests and theoretical derivations."Saturation" and eigengeophone-the parameter H(f) of voltage transmission feature of amplifier are reexamined. A series of vibration characteristics of geophones are presented to provide a foundation for choosing field schemes of connecting geophones.