Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Magnetic saturation
Reexamination Certificate
2005-07-05
2005-07-05
Nguyen, Vinh (Department: 2829)
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Magnetic saturation
C324S126000
Reexamination Certificate
active
06914422
ABSTRACT:
A current control that employs a magnetic amplifier and an active feedback circuit. The feedback circuit establishes the effective operating current of the amplifier at a fixed point. The magnetic amplifier includes a pair of oppositely wound gate windings, a bias winding and a control winding. The gate windings are driven by an oscillator driver that generates a gate winding current and a gate winding voltage. A reference voltage and the gate winding voltage are applied to a feedback amplifier and the feedback circuit. When the gate winding voltage becomes equal to the reference voltage, the feedback circuit is stable and the gate winding current is set to a desired zero current operating point.
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Baxter Donald L.
Nguyen David C.
Wheeler Kenneth B.
Kobert Russell M.
Miller John A.
Nguyen Vinh
Northrop Grumman Corporation
Warn, Hoffmann, Miller & LaLone, P.C.
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