Apparatus for determining the number of turns of a magnetic coil

Details Apparatus for determining the number of turns of a magnetic coil Apparatus for determining the number of turns of a magnetic coil

1980-11-28

1984-03-27

Krawczewicz, Stanley T.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

G01R 3102, G01R 3106

Patent

active

044397240

ABSTRACT:
Apparatus for determining the number of turns of a test coil wound on a magnetic core comprising a reference coil with a pre-fixed number of turns wound on a reference core and coupled to a resistive load. The test coil is linked to the reference coil by a single-turn primary supplied with a-c current of substantially constant amplitude. An adjustable resistive load is connected across the test coil. Both load resistors are of low ohmic value, to operate the two coils as heavily-burdened current transformers. The coil voltages are compared by a phase-sensed comparator, and the adjustable resistor is set to produce a null comparison condition. At this condition, the number of turns of the test coil will be proportional to the resistance of the adjustable resistor, and this number is indicated by a calibrated digital read-out device.

REFERENCES:
patent: 3953791 (1976-04-01), Spurr et al.

Affiliated with

Also associated with

Rating

Apparatus for determining the number of turns of a magnetic coil does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus for determining the number of turns of a magnetic coil, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for determining the number of turns of a magnetic coil will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1757958