公开(公告)号：US11612047B2

公开(公告)日：2023-03-21

申请号：US17201221

申请日：2021-03-15

Applicant: Moxtek, Inc.

Inventor： Sreeram Dhurjaty ,  David Hoffman ,  Bob West

IPC: H05G1/12 ,  H05G1/20 ,  H01J35/02

Abstract: It would be advantageous to reduce weight and size of high voltage power supplies, to increase frequency of pulses of high voltage, and to improve control of magnitude of high voltage. The embodiments of high voltage power supplies described herein can solve these problems. The high voltage power supply can be used with an x-ray tube. The high voltage power supply can comprise an array of planar transformers each defining a stage with an AC input and a DC output. Each stage can comprise a pair of flat, coil windings adjacent one another and including a primary winding electrically-coupled to the AC input and configured to induce a current in a secondary winding. At least two stages can be electrically-coupled together in series with the DC output of one stage electrically-coupled to an input of the other stage such that a voltage is amplified across the stages.

公开(公告)号：US12193135B2

公开(公告)日：2025-01-07

申请号：US18082922

申请日：2022-12-16

Applicant: Moxtek, Inc.

Inventor： David Hoffman

IPC: H05G1/10 ,  H01F27/28 ,  H01J35/02 ,  H05K1/03 ,  H05K1/16

Abstract: In an x-ray source, an isolation circuit can isolate bias voltage at a cathode from a bias voltage at an alternating current source (AC source). The isolation circuit can transfer alternating current from the AC source to the cathode. The isolation circuit can be made repeatedly with minimal variation or failed parts, can be light, and can be small. The isolation circuit can include planar transformer(s). Each planar transformer can include a primary trace on a primary circuit board and a secondary trace on a secondary circuit board. The primary trace and the secondary trace can each include a spiral shape. The primary trace can be located in close proximity to the secondary trace such that alternating electrical current through the primary trace will induce alternating electrical current through the secondary trace.

公开(公告)号：US20230232521A1

公开(公告)日：2023-07-20

申请号：US18082922

申请日：2022-12-16

Applicant: Moxtek, Inc.

Inventor： David Hoffman

IPC: H05G1/10 ,  H01J35/02 ,  H01F27/28 ,  H05K1/16 ,  H05K1/03

CPC classification number: H05G1/10 ,  H01F27/2804 ,  H01J35/025 ,  H05K1/032 ,  H05K1/165 ,  H01J2235/02 ,  H05K2201/0154

Abstract: In an x-ray source, an isolation circuit can isolate bias voltage at a cathode from a bias voltage at an alternating current source (AC source). The isolation circuit can transfer alternating current from the AC source to the cathode. The isolation circuit can be made repeatedly with minimal variation or failed parts, can be light, and can be small. The isolation circuit can include planar transformer(s). Each planar transformer can include a primary trace on a primary circuit board and a secondary trace on a secondary circuit board. The primary trace and the secondary trace can each include a spiral shape. The primary trace can be located in close proximity to the secondary trace such that alternating electrical current through the primary trace will induce alternating electrical current through the secondary trace.

公开(公告)号：US20210319972A1

公开(公告)日：2021-10-14

申请号：US17201221

申请日：2021-03-15

Applicant: Moxtek, Inc.

Inventor： Sreeram Dhurjaty ,  David Hoffman ,  Bob West

IPC: H01J35/22 ,  H01J35/02 ,  H01J35/06 ,  H01J35/08

Abstract: It would be advantageous to reduce weight and size of high voltage power supplies, to increase frequency of pulses of high voltage, and to improve control of magnitude of high voltage. The embodiments of high voltage power supplies described herein can solve these problems. The high voltage power supply can be used with an x-ray tube. The high voltage power supply can comprise an array of planar transformers each defining a stage with an AC input and a DC output. Each stage can comprise a pair of flat, coil windings adjacent one another and including a primary winding electrically-coupled to the AC input and configured to induce a current in a secondary winding. At least two stages can be electrically-coupled together in series with the DC output of one stage electrically-coupled to an input of the other stage such that a voltage is amplified across the stages.