H - Electricity – 02 – M
Patent
H - Electricity
02
M
313/23, 336/46,
H02M 7/06 (2006.01) H01F 27/06 (2006.01) H01F 27/36 (2006.01) H01F 30/16 (2006.01) H02M 7/10 (2006.01) H05G 1/10 (2006.01) H05G 1/20 (2006.01) H05G 1/34 (2006.01)
Patent
CA 2030582
59 ABSTRACT OF THE INVENTION A high voltage, high power DC power supply includes a single turn primary winding driven through a resonating capacitor by an AC source having a frequency in excess of about 100kHz. The primary winding includes a pair of concentric cylindrical metal walls having opposite ends electrically connected to each other. A volume between the walls includes plural secondary winding assemblies, having different axial positions along the walls. Each of the assemblies includes an annular magnetic core surrounding the interior wall, a winding on the core and a voltage doubler rectifier. DC voltages developed across each secondary winding assembly by the rectifier are added together to provide the high voltage, high power output. The power supply energizes an X-ray tube having a grounded anode and a cathode at a DC voltage of approximately -150kV, with a power requirement of between 15 and 60kW. The power supply and X-ray tube are mounted on a rotatable gantry including a slip ring assembly for coupling a relatively low voltage excitation source to the power supply.
Communications & Power Industries Inc.
R. William Wray & Associates
Varian Associates Inc.
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