Current sensor

Details Current sensor Current sensor

1989-08-24

1991-04-16

Wieder, Kenneth

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Magnetic saturation

324126, 323356, 323357, G01R 3300

Patent

active

050086120

ABSTRACT:
A current sensing apparatus includes a first transformer having a core which is cyclically driven into forward and reverse saturation, and a second transformer having a separate core. The sensing apparatus includes circuitry for separating the sensed current component from the magnetizing current in the secondary winding of the first transformer. The apparatus may also include correction circuitry to cancel the effects of ripple current on the output due to both the magnetization current and errors due to the presence of the ripple cancellation circuitry itself. The present sensing apparatus provides electrical isolation between the primary circuit and the sensing circuit, has wide bandwidth, and is sensitive to temperature, temperature gradient, mechanical forces, aging (creep) and noise.

REFERENCES:
patent: 4000473 (1976-12-01), Saito et al.
patent: 4243931 (1981-01-01), dela Cruz
patent: 4482862 (1984-11-01), Leehey
patent: 4616174 (1986-10-01), Jorgensen
patent: 4841236 (1989-06-01), Miljanic et al.
Patent Abstracts of Japan, vol. 2, No. 94 (E-78) (4521) Aug. 5, 1978 of JP-A-53 59821.

Affiliated with

Also associated with

Rating

Current sensor does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-423538