Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1988-03-07
1989-08-29
Miller, Stanley D.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307101, 307412, 328155, 342372, 333 241, H03K 301, H03B 304
Patent
active
048620149
ABSTRACT:
A device-implemented method for driving a ferrimagnetic load (10), such as a phase shifter in an antenna array, which precisely meters the amount of magnetic flux imparted to the load (10) by sensing the voltage applied to a winding and integrating the sensed voltage over time. The time intergrated voltage is proportional to the magnetic flux imparted to the load (10) and is constantly compared to a preprogrammed value stored in a memory (18). When the sensed voltage reaches the preprogrammed value, the voltage is removed from the load (10) so that a metered amount of magnetic flux, proportional to the preprogrammed value, remains in the load (10). The load (10) is initially reset by delivering current in one direction through its winding until saturation is reached. The load (10) is set with a metered amount of magnetic flux by delivering current in the opposite direction through the winding. A current sensing circuit (68) senses the point at which the load (10) becomes saturated during the reset cycle and also senses current flow through the winding during the set cycle in order to prevent a current overload.
REFERENCES:
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patent: 3521079 (1970-07-01), Kuck
patent: 3626425 (1971-12-01), Strenglein
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patent: 4469961 (1984-09-01), Milberger et al.
International Search Report, Application No. PCT/US 87/01591, Filing date Jul. 1, 1987.
Harrington William A.
Myers Terrence L.
Hughes Aircraft Company
Karambelas A. W.
Miller Stanley D.
Roseen Richard
Runk Thomas A.
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