Device for direct and continuous receiving and measuring of elec

Details Device for direct and continuous receiving and measuring of elec Device for direct and continuous receiving and measuring of elec

1977-10-07

1980-04-15

Strecker, Gerard R.

Electricity: measuring and testing

Of geophysical surface or subsurface in situ

With radiant energy or nonconductive-type receiver

324335, 324 77C, 324 77E, G01V 312, G01R 2316

Patent

active

041985966

ABSTRACT:
A direct and continuous receiving and measuring device for electrical, magnetic and acoustic signals comprises an amplifier stage and a broadband filtering stage at the input, a local oscillator for supplying a reference signal, a measuring stage, a mixer to which the local oscillator and the broadband filtering stage are connected and a low frequency filtering stage connected to the mixer.
The invention also includes the process of carrying out the measurement.

REFERENCES:
patent: 2268106 (1941-12-01), Blau
patent: 2700753 (1955-01-01), Peterson
patent: 2897442 (1959-07-01), Wright et al.
patent: 2926304 (1960-02-01), Fromm
patent: 3119999 (1964-01-01), Jaffe
patent: 3197704 (1965-07-01), Simon et al.
patent: 3519926 (1970-07-01), Chandos
patent: 3737842 (1973-06-01), Bobrin
patent: 3836960 (1974-09-01), Gehman et al.
patent: 4010413 (1977-03-01), Daniel
Zhestouskii et al., "Simple Spectrum Analyzer for Low . . . Frequencies", Instruments and Experimental Techniques, No. 2 (Mar. 4, 1970), N.Y. USA, pp. 615, 616.

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