Timed drift compensation for rate volume monitor

Details Timed drift compensation for rate volume monitor Timed drift compensation for rate volume monitor

1987-07-27

1988-08-23

Wayner, William E.

Surgery

Truss

Pad

7386103, 73708, 364571, A61B 508, G01L 1904

Patent

active

047653426

ABSTRACT:
A drift compensating circuit cooperates with an air-pressure-to voltage transducer. The first input of a comparison circuit is connected to the transducer, while a reference voltage is connected to the second input. The reference voltage is provided by an up/down counter and a digital to analog converter. The comparison circuit has an output connected to the up/down counter to cause the counter to count up or down. The counter is enabled at predetermined intervals.

REFERENCES:
patent: 3797479 (1974-03-01), Graham
patent: 3903875 (1975-09-01), Hughes
patent: 4388003 (1983-06-01), Feller
patent: 4528637 (1985-07-01), Smith
patent: 4667516 (1987-05-01), Schulz
patent: 4700174 (1987-10-01), Sutherland et al.

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