Amplifying circuit particularly adapted for amplifying a biopote

Details Amplifying circuit particularly adapted for amplifying a biopote Amplifying circuit particularly adapted for amplifying a biopote

1986-12-23

1988-06-14

Mullins, James B.

Amplifiers

With distributed parameter-type coupling means

330 65, 330 66, 330 68, 330 76, 330286, 330292, 330298, 128902, H03F 138, H03F 360

Patent

active

047514710

ABSTRACT:
An amplifying circuit for amplifying a bipotential input signal, including an insulating housing having a conductive input contact mounted on the housing and adapted to engage a human body so that the bipotential input signal applied to the contact; a lead amplifier having inverting and non-inverting inputs, one of which is coupled to the input contact, and an output; first and second diodes connected in parallel inverse polarity across the inputs of the lead amplifier; third and fourth diodes connected in parallel inverse polarity from the inverting input of the lead amplifier to a circuit common potential; and an output resistor connected from the inverting input to the output of the lead amplifier. Portions of the input contact are surrounded by a voltage drive shield connected to the output of the lead amplifier.

REFERENCES:
patent: 3500823 (1970-03-01), Richardson et al.
patent: 3565060 (1971-02-01), Sipple
patent: 3586991 (1971-06-01), Vosteen
patent: 3605728 (1971-09-01), Ogle
patent: 3620208 (1971-11-01), Higley
patent: 3628527 (1971-12-01), West
patent: 3679989 (1972-07-01), Thibodeau
patent: 3744482 (1973-07-01), Kaufman et al.
patent: 3880146 (1975-04-01), Everett et al.
patent: 4200109 (1980-04-01), McMorrow, Jr.
patent: 4235241 (1980-11-01), Tabuchi et al.
patent: 4243044 (1981-01-01), Blancke
patent: 4492932 (1985-01-01), Rusznyak

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