公开(公告)号：US10573482B2

公开(公告)日：2020-02-25

申请号：US15418807

申请日：2017-01-30

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Qing Cao ,  Kangguo Cheng ,  Zhengwen Li ,  Fei Liu

IPC: H01J21/08 ,  H01L41/047 ,  H01L41/09 ,  H01L41/29 ,  H01J19/42 ,  H01J9/39 ,  H01J9/18

Abstract: A vacuum transistor includes a substrate and a first terminal formed on the substrate. A piezoelectric element has a second terminal formed on the piezoelectric element, wherein the piezoelectric element is provided over the first terminal to provide a gap between the first terminal and the second terminal. The gap is adjusted in accordance with an electrical field on the piezoelectric element.

公开(公告)号：US5416391A

公开(公告)日：1995-05-16

申请号：US961531

申请日：1992-10-15

Applicant: Paulo N. Correa ,  Alexandra N. Correa

Inventor： Paulo N. Correa ,  Alexandra N. Correa

IPC: H01J17/06 ,  H01J21/08 ,  H01T9/00 ,  H02M3/15 ,  H03K3/37

CPC classification number: H01J17/063 ,  H01J21/08 ,  H01T9/00 ,  H02M3/15

Abstract: A direct current power transducer for driving alternating current devices utilizes a discharge tube connected across a current source, the construction of the tube and characteristics of the source being such as to maintain endogenous pulsed abnormal gas discharge within the tube. The tube is capacitatively coupled to an external load including an alternating current device, typically an electric motor. Electric motors of the asynchronous induction or synchronous types are particularly suitable, but other alternating current devices may be used. By adjustments to the current source, the capacitance in parallel with the discharge tube, and connections to auxiliary electrodes, the pulse repetition frequency of the discharge may be adjusted, thus allowing variable speed control of types of alternating current motor not normally amenable to such control.

Abstract translation: 用于驱动交流设备的直流电力传感器利用连接在电流源上的放电管，管的构造和源的特性使得维持内管内的脉冲异常气体放电。 该管电容耦合到包括交流电装置（通常为电动机）的外部负载。 异步感应或同步类型的电动机是特别合适的，但是可以使用其它交流装置。 通过调节电流源，与放电管并联的电容以及与辅助电极的连接，可以调节放电的脉冲重复频率，从而允许对通常不适合于这种控制的交流电动机的类型进行可变速度控制 。

公开(公告)号：US2787839A

公开(公告)日：1957-04-09

申请号：US22584151

申请日：1951-05-11

Applicant: TAYLOR EDWARD E

Inventor： TAYLOR EDWARD E

IPC: H01J21/08

CPC classification number: H01J21/08

公开(公告)号：US2518121A

公开(公告)日：1950-08-08

申请号：US78143247

申请日：1947-10-22

Applicant: CSF

Inventor： PIERRE CAHOUR ,  VELTE ANDRE J

IPC: H01J1/20 ,  H01J21/08

CPC classification number: H01J1/20 ,  H01J21/08

公开(公告)号：US2506589A

公开(公告)日：1950-05-09

申请号：US62592445

申请日：1945-10-31

Applicant: HALL WAYNE C

Inventor： HALL WAYNE C

IPC: H01J21/08

CPC classification number: H01J21/08

公开(公告)号：US2498479A

公开(公告)日：1950-02-21

申请号：US65757246

申请日：1946-03-27

Applicant: GEN ELECTRIC

Inventor： BENSEN IGOR B

IPC: F16J15/54 ,  H01J21/08 ,  H01J37/02 ,  H01J37/20

CPC classification number: H01J21/08 ,  F16J15/54 ,  H01J37/023 ,  H01J37/20

公开(公告)号：US2484194A

公开(公告)日：1949-10-11

申请号：US58561345

申请日：1945-03-30

Applicant: GREGORY POOLE J

Inventor： STEINHOFF JOHN R

IPC: H01J21/08

CPC classification number: H01J21/08

公开(公告)号：US2465743A

公开(公告)日：1949-03-29

申请号：US65797546

申请日：1946-03-29

Applicant: RCA CORP

Inventor： NORTON LOWELL E

IPC: H01J21/08

CPC classification number: H01J21/08

公开(公告)号：US2443237A

公开(公告)日：1948-06-15

申请号：US52750044

申请日：1944-03-21

Applicant: PATELHOLD PATENTVERWERTUNG

Inventor： ARTHUR GAUDENZI ,  OTTO SCHARLI

IPC: H01J21/08

CPC classification number: H01J21/08

公开(公告)号：US2443021A

公开(公告)日：1948-06-08

申请号：US62795445

申请日：1945-11-10

Applicant: GEN ELECTRIC

Inventor： BENSEN IGOR B

IPC: H01J21/08 ,  H01J37/09 ,  H01J37/15

CPC classification number: H01J37/15 ,  H01J21/08 ,  H01J37/09