公开(公告)号：US12149170B2

公开(公告)日：2024-11-19

申请号：US17772579

申请日：2020-04-17

Applicant: NuRay Technology Co., Ltd.

Inventor： Huaping Tang ,  Jinsong Pan ,  Zhanfeng Qin ,  Xiangyu Yin ,  Yangwei Zhan

IPC: H03K17/10 ,  H02M3/158 ,  H01J35/06

Abstract: A power supply circuit and a field emission electron source are provided. The power supply circuit includes: field effect transistors Si coupled in series via drains and sources in sequence, wherein 1≤i≤n, n≥2, and wherein a source of S1 is coupled to a negative electrode of a voltage source, and a drain of Sn is used as an output terminal of the power supply circuit to couple to a load; a first group of diodes D1i coupled in series; a first group of resistors R1j, 2≤j≤n; and a current feedback module configured to adjust an internal resistance of the field effect transistors Si, coupled in series in sequence, so as to cause a current passing through the load to be constant; wherein the field effect transistors Si, 1≤i≤n, operate in a constant current region.

公开(公告)号：US11792908B2

公开(公告)日：2023-10-17

申请号：US17755520

申请日：2020-04-13

Applicant: NuRay Technology Co., Ltd.

Inventor： Huaping Tang ,  Jinsong Pan ,  Yangwei Zhan ,  Zhanfeng Qin ,  Qinghui Zhang ,  Xiangyu Yin

IPC: H05G1/70 ,  H05G1/56 ,  H05G1/26 ,  H01J35/02

CPC classification number: H05G1/70 ,  H05G1/265 ,  H05G1/56 ,  H01J35/025

Abstract: A time-division multiplexing control device applied to a distributed X-ray source includes: a first switch module with a number of first switches that receive a high-voltage signal and a first control signal, selectively turning on one of the plurality of first switches according to the first control signal and sending the high-voltage signal through the first switch turned on; and a cathode control module including a plurality of cathode control stages in one-to-one correspondence with the plurality of first switches, used for receiving the high-voltage signal from the first switch module and sending working state data through a cathode control stage corresponding to the first switch turned on in the plurality of cathode control stages, where each cathode control stage includes a cathode control unit and a cathode.

公开(公告)号：US11830698B2

公开(公告)日：2023-11-28

申请号：US17772568

申请日：2020-04-17

Applicant: NuRay Technology Co., Ltd.

Inventor： Huaping Tang ,  Xiangyu Yin ,  Zhanfeng Qin ,  Jinsong Pan ,  Qinghui Zhang ,  Yangwei Zhan

IPC: G05F1/56 ,  H01J35/06 ,  G05F1/565

CPC classification number: H01J35/065 ,  G05F1/565

Abstract: A power supply circuit and a field emission electron source are provided. The power supply circuit includes: field effect transistors Si coupled in series via drains and sources in sequence, 1≤i≤n, i and n are natural numbers, n≥2, and a source of S1 is coupled to a negative electrode of a voltage source, and a drain of Sn is used as an output terminal of the power supply circuit to couple to a load; a first group of diodes D1i coupled in series; a first group of resistors R1j, 2≤j≤n, and i and j are natural numbers; and a voltage control module configured to adjust an output voltage of the voltage source to cause a current passing through the load to be constant; the field effect transistors Si, 1≤i≤n, operate in a resistive region.