Alternating current comparator bridge for resistance measurement

Details Alternating current comparator bridge for resistance measurement Alternating current comparator bridge for resistance measurement

1980-04-07

1982-03-30

Krawczewicz, Stanley T.

Electricity: measuring and testing

Conductor identification or location

Inaccessible

324DIG1, G01R 2702

Patent

active

043226795

ABSTRACT:
The ac current comparator bridge measures the resistance of an unknown resistor at 50-60 Hz with an accuracy in the order of 10 parts per million. The current in the unknown resistor is compared, using a current comparator, to the current in a reference resistor for the in-phase component, and to the current in a reference capacitor for the quadrature component or phase defect. Once an ampere-turn balance is achieved in the comparator by adjusting the winding turns, the unknown resistor's values are a function of the reference resistor, the reference capacitor, the voltage sources driving the currents through the unknown resistor and the references, as well as the turns of the windings.

REFERENCES:
patent: 1856202 (1932-05-01), Wilson
patent: 3142015 (1964-07-01), Kusters et al.
patent: 3188562 (1965-06-01), Kusters et al.
patent: 3523247 (1970-08-01), Clifford et al.
patent: 3849727 (1974-11-01), Kusters et al.
patent: 4238726 (1980-12-01), Ichijo

Affiliated with

Also associated with

Rating

Alternating current comparator bridge for resistance measurement does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Alternating current comparator bridge for resistance measurement, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Alternating current comparator bridge for resistance measurement will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-384569