Automatically balanced and tested bridge measurement circuit, an

Details Automatically balanced and tested bridge measurement circuit, an Automatically balanced and tested bridge measurement circuit, an

1993-06-04

1996-01-16

Wieder, Kenneth A.

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

With auxiliary means to condition stimulus/response signals

324706, 324725, G01R 1700

Patent

active

054851009

ABSTRACT:
The output of a bridge measurement circuit is sampled at a time when there is no desired, or expected, bridge output signal, and a balance voltage applied to the bridge measurement circuit is automatically adjusted such that the sample bridge output signal is equivalent to a reference output signal. After the bridge is balanced, the balance voltage is automatically modified by a calibration voltage calculated to provide a known change in the sample bridge output signal, and the sample bridge output signal is compared to a reference output to automatically check the bridge measurement circuit gain. The balance voltage may be automatically modified by multiple calibration voltages, and the sample bridge output signal provides an indication of the linearity of the amplifier gain. The sample bridge output signal is monitored after a change in the balance voltage to automatically provide an indication of the bridge measurement circuit filter cutoff frequency.

REFERENCES:
patent: 3873917 (1975-03-01), Kreuzer
patent: 3928800 (1975-12-01), Strenglein
patent: 4015209 (1977-03-01), Meyer-Ebrecht
patent: 4063447 (1977-12-01), Mathison
patent: 4364027 (1982-12-01), Murooka
patent: 4535857 (1985-08-01), Haze
patent: 4549620 (1985-10-01), Dee et al.
patent: 4926360 (1990-05-01), Spink, Jr.
patent: 4992724 (1991-02-01), Hisanaga et al.
patent: 5197334 (1993-03-01), Guzlak
Daniel H. Sheingold, "Transducer Interfacing Handbook: A Guide to Analog Signal Conditioning"; Mar. 1980, Analog Devices, Inc.; pp. 31-43.
Pacific Perspectives, Pacific Instruments, Inc., 215 Mason Circle, Concord, California 94520, pp. 1-4, Jan. 1994, note p. 2, "APPLICATION".

Affiliated with

Also associated with

Rating

Automatically balanced and tested bridge measurement circuit, an does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Automatically balanced and tested bridge measurement circuit, an, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatically balanced and tested bridge measurement circuit, an will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-312023