-
公开(公告)号：US10539667B2
公开(公告)日：2020-01-21
申请号：US15400807
申请日：2017-01-06
Applicant: General Electric Company
Inventor： Han Peng , Juan Antonio Sabate , Kieran Andrew Wall
Abstract: An ultrasound pulse generator circuit includes a first gate driver electrically coupled to a first gallium nitride (GaN) transistor, a second gate driver electrically coupled to a second GaN transistor, a first snubber circuit, a second snubber circuit, and a transformer. The first snubber circuit and the second snubber circuit each include a respective capacitor and resistor and each snubber circuit is configured to clamp a voltage overshoot when present. Further, the transformer generates an output signal when operated and the third transformer is electrically connected downstream of the first GaN transistor, the second GaN transistor, the first snubber circuit, and the second snubber circuit. In addition, the transformer includes multiple windings.
-
公开(公告)号：US20180329045A1
公开(公告)日：2018-11-15
申请号：US15593370
申请日：2017-05-12
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Han Peng , John Glaser , Kieran Wall , Juan Sabate
CPC classification number: G01S7/5208 , A61B8/4477 , G01S7/5202
Abstract: There is set forth herein an ultrasound signal generating circuit having a control circuit which can include a control circuit having a control signal generating circuit; a low power signal driver circuit for providing a low power ultrasound signal; a high power signal driver circuit for providing a high power ultrasound signal; and a radiofrequency switch configured to transmit the low power ultrasound signal and the high power ultrasound signal to the ultrasound probe, wherein the radiofrequency switch isolates the low power signal driver circuit from the high power signal driver circuit; wherein the ultrasound signal generating circuit is configured so that the radiofrequency switch transmits an output low power ultrasound signal output by the low power signal driver circuit or an output high power ultrasound signal output by the high power signal driver circuit based on an output of the control signal generating circuit.
-
公开(公告)号：US20180196129A1
公开(公告)日：2018-07-12
申请号：US15400807
申请日：2017-01-06
Applicant: General Electric Company
Inventor： Han Peng , Juan Antonio Sabate , Kieran Andrew Wall
CPC classification number: G01S7/5202 , A61B8/4483 , A61B8/5207 , A61B8/54 , A61B8/56 , G01S7/52085
Abstract: An ultrasound pulse generator circuit includes a first gate driver electrically coupled to a first gallium nitride (GaN) transistor, a second gate driver electrically coupled to a second GaN transistor, a first snubber circuit, a second snubber circuit, and a transformer. The first snubber circuit and the second snubber circuit each include a respective capacitor and resistor and each snubber circuit is configured to clamp a voltage overshoot when present. Further, the transformer generates an output signal when operated and the third transformer is electrically connected downstream of the first GaN transistor, the second GaN transistor, the first snubber circuit, and the second snubber circuit. In addition, the transformer includes multiple windings.
-
Patent Agency Ranking
公开(公告)号：US09853555B2
公开(公告)日：2017-12-26
申请号：US14856657
申请日：2015-09-17
Applicant: General Electric Company
Inventor： Ramanujam Ramabhadran , Han Peng , Yehuda Daniel Levy , John Stanley Glaser
IPC: H02M7/5383 , H02M3/335 , H05B37/02 , H02M1/00
CPC classification number: H02M3/33546 , H02M2001/0058 , H05B33/0815 , H05B37/02 , Y02B70/1491
Abstract: A universal power adapter includes a power converter configured to generate an output power based on a switching frequency of the power converter. The universal power adapter also includes a frequency controller operatively coupled to the power converter and configured to control the switching frequency of the power converter. The universal power adapter further includes a switch capacitor circuit having a plurality of capacitive elements, operatively coupled to the power converter. The switch capacitor circuit is configured to switch between the plurality of capacitive elements. The universal power adapter also includes a capacitance controller operatively coupled to the switch capacitor circuit and configured to control the switch capacitor circuit to control switching between the plurality of capacitive elements to maintain a control parameter within a threshold range of.
-
公开(公告)号：US10585155B2
公开(公告)日：2020-03-10
申请号：US15634598
申请日：2017-06-27
Applicant: General Electric Company
Inventor： Ruxi Wang , Xiaohu Liu , Han Peng , Fengfeng Tao , Juan Antonio Sabate
IPC: G01R33/385 , G01R33/36 , G01R33/422
Abstract: This disclosure regards a magnetic resonance imaging system including a scanner, and gradient drivers. The scanner is to be implemented within a scan room that is shielded from electromagnetic interference. Gradient coils are designed to create a linear gradient in the magnetic field generated in the scanner by a primary magnet. These coils are energized by gradient drivers. The gradient drivers use transformers and other electrical devices in a switching stage configured to generate pulse-width-modulated power. The transformers may have non-magnetic cores to facilitate implementing the gradient drivers within the scan room. The gradient drivers also use a filtering stage which uses inductors and other electrical devices to smooth the pulse-width-modulated power. The inductors within the filters may have non-magnetic cores to facilitate implementing the gradient driver within the scan room. Additionally, an inductor with a hollow wire may be used to circulate fluid to facilitate cooling the gradient driver.
-
公开(公告)号：US10374591B2
公开(公告)日：2019-08-06
申请号：US15397443
申请日：2017-01-03
Applicant: General Electric Company
Inventor： Ramanujam Ramabhadran , Sayan Acharya , Han Peng , Maja Harfman Todorovic , Ahmed Elasser , Robert Thomas
IPC: H01L29/16 , H01L29/20 , H01L29/24 , H03K17/06 , H03K17/16 , H01L29/778 , H03K17/0812
Abstract: Systems and methods provided herein relate to a gate drive circuit for controlling operation of a wide bandgap semiconductor switch. The systems and methods receive a control signal and configuring an operation signal configured to activate a wide bandgap switch (WBG switch). A profile of the operation signal being based on electrical characteristics of first and second shaping circuits. The systems and methods further deliver the operation signal to the WBG switch.
-
公开(公告)号：US20180372819A1
公开(公告)日：2018-12-27
申请号：US15634598
申请日：2017-06-27
Applicant: General Electric Company
Inventor： Ruxi Wang , Xiaohu Liu , Han Peng , Fengfeng Tao , Juan Antonio Sabate
IPC: G01R33/385 , G01R33/36
CPC classification number: G01R33/3852 , G01R33/36 , G01R33/3856 , G01R33/422
Abstract: This disclosure regards a magnetic resonance imaging system including a scanner, and gradient drivers. The scanner is to be implemented within a scan room that is shielded from electromagnetic interference. Gradient coils are designed to create a linear gradient in the magnetic field generated in the scanner by a primary magnet. These coils are energized by gradient drivers. The gradient drivers use transformers and other electrical devices in a switching stage configured to generate pulse-width-modulated power. The transformers may have non-magnetic cores to facilitate implementing the gradient drivers within the scan room. The gradient drivers also use a filtering stage which uses inductors and other electrical devices to smooth the pulse-width-modulated power. The inductors within the filters may have non-magnetic cores to facilitate implementing the gradient driver within the scan room. Additionally, an inductor with a hollow wire may be used to circulate fluid to facilitate cooling the gradient driver.
-
公开(公告)号：US20170085186A1
公开(公告)日：2017-03-23
申请号：US14856657
申请日：2015-09-17
Applicant: General Electric Company
Inventor： Ramanujam Ramabhadran , Han Peng , Yehuda Daniel Levy , John Stanley Glaser
CPC classification number: H02M3/33546 , H02M2001/0058 , H05B33/0815 , H05B37/02 , Y02B70/1491
Abstract: A universal power adapter includes a power converter configured to generate an output power based on a switching frequency of the power converter. The universal power adapter also includes a frequency controller operatively coupled to the power converter and configured to control the switching frequency of the power converter. The universal power adapter further includes a switch capacitor circuit having a plurality of capacitive elements, operatively coupled to the power converter. The switch capacitor circuit is configured to switch between the plurality of capacitive elements. The universal power adapter also includes a capacitance controller operatively coupled to the switch capacitor circuit and configured to control the switch capacitor circuit to control switching between the plurality of capacitive elements to maintain a control parameter within a threshold range of.
-
-
-
-
-
-
-
Search Results
8
records
(took 0.014 seconds)
