Devices for reading the quantities of electrical charges borne b

Details Devices for reading the quantities of electrical charges borne b Devices for reading the quantities of electrical charges borne b

1984-07-12

1987-06-16

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Electrostatic field

324452, 361220, G01R 2912

Patent

active

046738851

ABSTRACT:
The invention relates to a device for reading the quantities of electrical charges borne by a dielectric sheet using a probe scanning the charged surface of the sheet and connected to an electronic circuit adapted to measure the quantities of charges induced on said probe. This electronic circuit comprises an operational transimpedance amplifier and an analog integrator reset to zero periodically by suitable circuitry.

REFERENCES:
patent: 3013203 (1961-12-01), Allen
patent: 3676769 (1972-07-01), Loepfe
patent: 4050019 (1977-09-01), Nirschl
patent: 4103231 (1978-07-01), Nemcek, Sr.
patent: 4117715 (1978-10-01), Hoenig
patent: 4233562 (1980-11-01), Blythe
patent: 4424481 (1984-01-01), Laroche et al.

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