Measurement System with large dynamic range

Details Measurement System with large dynamic range Measurement System with large dynamic range

1997-11-11

1999-03-09

Pham, Hoa Q.

Optics: measuring and testing

Photometers

Photoelectric

356226, 356218, 307311, 323226, G01J 146, G05F 1613

Patent

active

058808272

ABSTRACT:
A measurement circuit having high dynamic range includes high-gain and low-gain amplifiers connected in parallel. A shunt feedback circuit is activated to prevent the high-gain amplifier from saturating when the magnitude of an input signal exceeds its dynamic range. The output of the high-gain amplifier is utilized to measure small input signals and the output of the low-gain amplifier is utilized to measure large input signals.

REFERENCES:
patent: 3558917 (1971-01-01), Crouse
patent: 4666301 (1987-05-01), Gruenke
patent: 5260644 (1993-11-01), Curtis

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