Geophone testing apparatus

Details Geophone testing apparatus Geophone testing apparatus

1985-05-15

1988-06-28

Tarcza, Thomas H.

Communications, electrical: acoustic wave systems and devices

Testing, monitoring, or calibrating

H04B 1700

Patent

active

047544384

ABSTRACT:
The invention is an apparatus for obtaining a step function response signal from a geophone, comprising: (1) a controllable source of current; (2) a means for producing a switching pulse; (3) an electronic connecting means for applying current from the source to the geophone, while the pulse is being produced; and (4) an electronic connecting means for conducting the response signal from the geophone to a data acquisition system, after the pulse has been produced. Preferably, a time delay means is used to delay the connecting of the signal to the data acquisition system, for a time after the pulse has been produced.

REFERENCES:
patent: 3858169 (1974-12-01), Bardeen
patent: 4003018 (1977-01-01), McCormick
patent: 4043175 (1977-08-01), Fredriksson et al.
patent: 4296483 (1981-10-01), Haill
patent: 4391124 (1983-07-01), Drost et al.
patent: 4392213 (1983-07-01), Kung et al.
Schilling et al, Electronic Circuits, 1979, pp. 798-800.

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