Inductor devices – With electric and/or magnetic shielding means
Patent
1982-07-27
1985-01-29
Pellinen, A. D.
Inductor devices
With electric and/or magnetic shielding means
336 84C, 336177, H01F 1504
Patent
active
044969244
ABSTRACT:
A pulse transformer is used in a radar transmitter to transform a high current pulse at relatively low voltage into a very high voltage pulse which can be used to directly drive a magnetron oscillator. The potential of the output pulse can be of the order of 30 kV and since the transformer is required to operate at very high peak powers of the order of two megawatts, it must be very carefully designed to avoid excessive electrical losses and voltage breakdown. The core material of the transformer consists of a closely wound reel of magnetic material in the form of an elongate tape, which is mechanically fragile. The magnetic core is loosely mounted within a sealed container so that the primary and secondary windings surround it. A conductive shield is placed around the magnetic material so as to protect it from the very large electric fields generated within the transformer. This prevents the ionization of gases which could lead to the rapid deterioration of the magnetic core material.
REFERENCES:
patent: 2901714 (1959-08-01), Baker
patent: 3063135 (1962-11-01), Clark
IEEE Transactions on Instrumentation and Measurement, vol. IM-24, No. 4, pp. 349-352, Dec. 1975.
Pellinen A. D.
Steward Susan
The Marconi Company Limited
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