High voltage DC source including magnetic flux pole and multiple stacked AC to DC converter stages with planar coils
AssigneeVarian Associates, Inc.
InventorJohn A. Collier
Life of this patent
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Abstract
A high voltage high power DC source includes a magnetic flux pole structure responsive to a high frequency, relatively low voltage source inductively coupled to the pole. Multiple AC to DC converters inductively coupled to the pole are connected in series, stacked relationship with each other, to derive the high voltage, high power DC output. Each stage includes a pair of oppositely wound planar coils on opposite sides of a printed circuit board. The printed circuits of the different stages are displaced from each other and a coil driven by the high frequency source.
Claims39
A power supply for deriving a high voltage DC output in response to a source of AC having a lower voltage comprising a magnetic core structure forming an elongated magnetic flux pole having a longitudinal axis, a first coil surrounding said flux pole adapted to be responsive to said source of AC for causing magnetic flux to flow along the longitudinal axis of the flux pole, multiple AC to DC converter stages having DC output terminals connected in stacked series relation with each other, each of said converter stages including a separate planar coil concentric with said flux pole and located in a plane at right angles to the flux pole longitudinal axis, the fist coil and the coil of each stage being at different mutually exclusive, non-overlapping longitudinal positions along the flux pole and positioned so that the magnetic flux flowing longitudinally in the flux pole induces a voltage in the planar coils in planes at right angles to the axis.
A power supply for deriving a high voltage DC output in response to a source of AC having a lower voltage comprising a structure forming an elongated magnetic flux pole having a longitudinal axis, a first coil surrounding said flux pole adapted to be responsive to said source of AC for causing magnetic flux to flow along the longitudinal axis of the flux pole, multiple AC to DC converter stages having DC output terminals connected in stacked series relation with each other, each of said converter stages including a separate planar coil concentric with said flux pole and located in a plane at right angles to the flux pole longitudinal axis, the coil of each stage being at a different longitudinal position along the flux pole and positioned so that the magnetic flux flowing longitudinally in the flux pole induces a voltage in the planar coils in planes at right angles to the axis, the flux pole structure and first coil being approximately at ground potential.
Dependencies are inferred from the claim text.