Method and apparatus for testing a plurality of geophones

Details Method and apparatus for testing a plurality of geophones Method and apparatus for testing a plurality of geophones

1976-02-09

1977-01-11

Wilbur, Maynard R.

Communications: electrical

Selective

Having electron beam device

73 1DV, 340 5C, G01V 116

Patent

active

040030180

ABSTRACT:
A method and apparatus for testing a plurality of geophones disposed in either a series or series-parallel arrangement for both their activity and distortion. The activity of geophones is checked by applying a plurality of constant amplitude current pulses to the geophones and measuring the peak value of the resulting voltage. The distortion of the geophones is measured by applying a constant amplitude sinusoidal current to the geophones and detecting the harmonics of the resulting voltage.

REFERENCES:
patent: 3858169 (1974-12-01), Bardeen
patent: 3903505 (1975-09-01), Tims

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