Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent
1975-04-30
1976-08-24
Corcoran, Robert J.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Frequency of cyclic current or voltage
324 43R, G01R 3314
Patent
active
039769356
ABSTRACT:
Apparatus for measuring the internal field intensity H of a magnetic body having opposite poles surfaces includes an elongated magnetic potential measuring coil, one end of which is placed in contact with one of the pole surfaces of the body being measured, while the body is subjected to a magnetic field of variable intensity generated by an iron-free coil having lines of force passing through the body in directions perpendicular to the pole surfaces of the body being measured, the other end of the measuring coil being placed at a location which is uninfluenced by the magnetic potential at either of the poles of the body in one example and, in another example, being placed in contact with the other pole surface of the body. Values for B may also be measured by a second coil at the same time.
REFERENCES:
patent: 1204489 (1916-11-01), Rogowski
patent: 2861241 (1958-11-01), Leonard et al.
patent: 3365660 (1968-01-01), Steingroever
patent: R19600 (1935-06-01), Hermann
Margerison et al.; Some Uses of the Magnetic Potentiometer etc., Jour. of Scien. Inst., Aug., 1946, pp. 182-184.
Magnetik Elektro-Physik Publication; 1972, pp. 14, 15, 19 & 20.
Corcoran Robert J.
Elektro-Physik Hans Nix & Dr.-Ing. E. Steingroever KG
Mitchell, Jr. George H.
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