Measurement circuit with improved accuracy

Details Measurement circuit with improved accuracy Measurement circuit with improved accuracy

2006-06-20

2006-06-20

Hollington, Jermele (Department: 2829)

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With rotor

Reexamination Certificate

active

07064535

ABSTRACT:
A measurement circuit for measuring input voltages in an automatic test system includes a pedestal source, a differential amplifier, and a feedback amplifier. The differential amplifier measures a “residue,” i.e., a difference between an input signal and a pedestal signal from the pedestal source, which is programmed to equal an expected input voltage. The feedback amplifier boosts the residue before it is presented to the differential amplifier, and thus allows the differential amplifier to be operated at lower gain than is typically used in conventional topologies. Consequently, the effect of the errors in the differential amplifier are reduced.

REFERENCES:
patent: 5189362 (1993-02-01), Doble
patent: 5424663 (1995-06-01), Wong
patent: 5485292 (1996-01-01), Wong et al.
patent: 5514972 (1996-05-01), DeMoor et al.
patent: 5977824 (1999-11-01), Sparks
patent: 6914425 (2005-07-01), Leip
patent: WO 93/24993 (1993-12-01), None
International Search Report, Mailing Date Nov. 2, 2004.

Affiliated with

Also associated with

Rating

Measurement circuit with improved accuracy does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Measurement circuit with improved accuracy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Measurement circuit with improved accuracy will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3661373