Patents by Inventor Shiu-Hui Lee
Shiu-Hui Lee has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240223184Abstract: A circuit and a method for improving efficiency by use of external inductor for temperature control, wherein the operating temperature of a field effect transistor is calculated by the inductor voltage. The change in operating temperature is used to adjust and control the voltage of the variable voltage gate drive module. When the operating temperature rises, the input voltage of the gate increases accordingly; when the operating temperature decreases, the input voltage of the gate decreases accordingly, thereby achieving the efficiency of regulating light and heavy loads.Type: ApplicationFiled: July 17, 2023Publication date: July 4, 2024Inventors: Wen Nan HUANG, Ching Kuo CHEN, Shiu Hui LEE, Hsiang Chi MENG, Chih Ming YU
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Patent number: 11804834Abstract: An electromagnetic interference regulator by use of capacitive parameters of the field-effect transistor for detecting the induced voltage and the induced current of the field-effect transistor to determine whether the operating frequency of the field-effect transistor is within the preset special management frequency of electromagnetic interference. When the basic frequency and the multiplied frequency exceed the limit, the content of the external capacitor unit can be adjusted to assist the products using field-effect transistors to maintain excellent electromagnetic interference adjustment capabilities under various loads, thereby optimizing the characteristics of electromagnetic interference.Type: GrantFiled: November 23, 2021Date of Patent: October 31, 2023Assignee: POTENS SEMICONDUCTOR CORP.Inventors: Wen Nan Huang, Ching Kuo Chen, Shiu Hui Lee, Hsiang Chi Meng, Cho Lan Peng, Chuo Chien Tsao
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Publication number: 20230038599Abstract: An electromagnetic interference regulator by use of capacitive parameters of the field-effect transistor for detecting the induced voltage and the induced current of the field-effect transistor to determine whether the operating frequency of the field-effect transistor is within the preset special management frequency of electromagnetic interference. When the basic frequency and the multiplied frequency exceed the limit, the content of the external capacitor unit can be adjusted to assist the products using field-effect transistors to maintain excellent electromagnetic interference adjustment capabilities under various loads, thereby optimizing the characteristics of electromagnetic interference.Type: ApplicationFiled: November 23, 2021Publication date: February 9, 2023Applicant: Potens Semiconductor Corp.Inventors: Wen Nan Huang, Ching Kuo Chen, Shiu Hui Lee, Hsiang Chi Meng, Cho Lan Peng, Chuo Chien Tsao
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Publication number: 20230039285Abstract: A hybrid metal-oxide semiconductor field-effect transistor with variable gate impedance and an implementation method thereof, wherein the hybrid metal-oxide semiconductor field-effect transistor has the characteristic of changing the on-resistance according to different drive voltages. By use of a feedback loop and a variable gate drive voltage generator which can vary the generated gate drive voltage based on different loads, the present disclosure can still adjust the gate drive voltage under different load conditions without requiring a plurality of metal-oxide semiconductor field-effect transistors in series/parallel to achieve the lowest power loss.Type: ApplicationFiled: November 23, 2021Publication date: February 9, 2023Inventors: Wen Nan HUANG, Ching Kuo CHEN, Shiu Hui LEE, Tung Ming LAI, Cho Lan PENG, Chuo Chien TSAO
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Patent number: 10594221Abstract: A power supply device and a power supply method are provided. The power supply device is configured to generate a first feedback signal according to an output power source, and operate in a skip mode (or called burst mode) according to the first feedback signal. The power supply device is configured to obtain an overall efficiency according to an input power and an output power, and obtain a difference between the overall efficiency and a preset efficiency. When an output current value of the output power source is within a predetermined range and the difference is greater than a first value, the power supply device generates a second feedback signal and stops operating in the skip mode according to the second feedback signal.Type: GrantFiled: September 26, 2019Date of Patent: March 17, 2020Assignee: Chicony Power Technology Co., Ltd.Inventors: Wen-Nan Huang, Shiu-Hui Lee
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Patent number: 10096990Abstract: A surge voltage protection apparatus includes a surge voltage absorbing component, a ground component, an electrical status sensing circuit and a control unit. The surge voltage absorbing component receives a surge voltage, so that the electrical status sensing circuit senses an electrical status between the surge voltage absorbing component and the ground component to obtain an electrical data. The electrical status sensing circuit sends the electrical data to the control unit. After the control unit receives the electrical data, the control unit determines the electrical data. When the electrical data is greater than an electrical data predetermined value, the control unit informs a power supply apparatus that the electrical data is greater than the electrical data predetermined value, so that the power supply apparatus is turned off to protect the power supply apparatus.Type: GrantFiled: January 13, 2016Date of Patent: October 9, 2018Assignee: CHICONY POWER TECHNOLOGY CO., LTD.Inventors: Wen-Nan Huang, Ching-Guo Chen, Shiu-Hui Lee
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Patent number: 9835690Abstract: An AC inrush current testing device is disclosure. The AC inrush current testing device includes a grid voltage peak point calculator, a grid voltage period and timing detector, a switch, an autotransformer, and a main relay. The grid voltage period and timing detector is connected to an AC power source and the grid voltage peak point calculator. A movable contact of the switch is connected to the AC power source. A first winding of the autotransformer is connected to the AC power source, a second winding of the autotransformer, and a first stationary contact of the switch. A third winding of the autotransformer is connected to a second stationary contact of the switch and the second winding. The main relay is electrically connected to the grid voltage peak point calculator, the second winding, and the third winding. A method for testing AC inrush current is further disclosed.Type: GrantFiled: October 16, 2015Date of Patent: December 5, 2017Assignee: CHICONY POWER TECHNOLOGY CO., LTD.Inventors: Wen-Nan Huang, Ming-Tsan Lin, Ching-Guo Chen, Shiu-Hui Lee, Chih-Ming Yu, Hsin-Chang Yu, Chang-Li Hsieh
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Patent number: 9772384Abstract: An AC input voltage detecting device includes a first input, a second input, a determining unit, a first voltage-detecting unit, and a second voltage-detecting unit. The first input and the second input are electrically connected to a neutral line and a live line of an AC power, respectively. The determining unit includes a first power switch, a second power switch, and an output, the first and second power switch are electrically connected in series, and the output is coupled to the second power switch. The first voltage-detecting unit is electrically connected to the first input and the first power switch, the second voltage-detecting unit is electrically connected to the second input and the second power switch. A signal for indicating that the AC power supplies normally is generated from the determining unit while the voltages conducted by the live line and the neutral line are normal.Type: GrantFiled: December 1, 2015Date of Patent: September 26, 2017Assignee: Chicony Power Technology Co., Ltd.Inventors: Wen-Nan Huang, Ming-Tsan Lin, Ching-Guo Chen, Shiu-Hui Lee, Hsiao-Chih Ku, Chih-Ming Yu, Hsin-Chang Yu
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Patent number: 9768681Abstract: A filtering module includes a first inductor and a first capacitor. The first inductor has a first inductance varied by varying the current into the first inductor. The first capacitor is electrically connected to the first inductor. The filtering bandwidth of the filtering module is varied by varying the current into the filtering module.Type: GrantFiled: January 27, 2016Date of Patent: September 19, 2017Assignee: CHICONY POWER TECHNOLOGY CO., LTD.Inventors: Wen-Nan Huang, Ching-Guo Chen, Shiu-Hui Lee, Ching-Chou Tseng
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Publication number: 20170214316Abstract: A filtering module includes a first inductor and a first capacitor. The first inductor has a first inductance varied by varying the current into the first inductor. The first capacitor is electrically connected to the first inductor. The filtering bandwidth of the filtering module is varied by varying the current into the filtering module.Type: ApplicationFiled: January 27, 2016Publication date: July 27, 2017Inventors: Wen-Nan HUANG, Ching-Guo CHEN, Shiu-Hui LEE, Ching-Chou TSENG
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Publication number: 20170201088Abstract: A surge voltage protection apparatus includes a surge voltage absorbing component, a ground component, an electrical status sensing circuit and a control unit. The surge voltage absorbing component receives a surge voltage, so that the electrical status sensing circuit senses an electrical status between the surge voltage absorbing component and the ground component to obtain an electrical data. The electrical status sensing circuit sends the electrical data to the control unit. After the control unit receives the electrical data, the control unit determines the electrical data. When the electrical data is greater than an electrical data predetermined value, the control unit informs a power supply apparatus that the electrical data is greater than the electrical data predetermined value, so that the power supply apparatus is turned off to protect the power supply apparatus.Type: ApplicationFiled: January 13, 2016Publication date: July 13, 2017Inventors: Wen-Nan HUANG, Ching-Guo CHEN, Shiu-Hui LEE
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Patent number: 9692292Abstract: A power supply apparatus includes a main power processing circuit and an alternating current power detection circuit. The alternating current power detection circuit is electrically connected to the main power processing circuit. The alternating current power detection circuit includes a rectifying unit and a frequency processing unit. The rectifying unit is electrically connected to the main power processing circuit. The frequency processing unit is electrically connected to the main power processing circuit and the rectifying unit. The rectifying unit rectifies an alternating current power to obtain a rectified power. When a frequency of the rectified power is greater than a predetermined frequency, the frequency processing unit informs the main power processing circuit, so that the main power processing circuit processes the alternating current power to obtain an output direct current power.Type: GrantFiled: March 10, 2015Date of Patent: June 27, 2017Assignee: Chicony Power Technology Co., Ltd.Inventors: Wen-Nan Huang, Shiu-Hui Lee, Yao-Wen Tsai, Ching-Guo Chen
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Publication number: 20170153295Abstract: An AC input voltage detecting device includes a first input, a second input, a determining unit, a first voltage-detecting unit, and a second voltage-detecting unit. The first input and the second input are electrically connected to a neutral line and a live line of an AC power, respectively. The determining unit includes a first power switch, a second power switch, and an output, the first and second power switch are electrically connected in series, and the output is coupled to the second power switch. The first voltage-detecting unit is electrically connected to the first input and the first power switch, the second voltage-detecting unit is electrically connected to the second input and the second power switch. A signal for indicating that the AC power supplies normally is generated from the determining unit while the voltages conducted by the live line and the neutral line are normal.Type: ApplicationFiled: December 1, 2015Publication date: June 1, 2017Inventors: Wen-Nan HUANG, Ming-Tsan LIN, Ching-Guo CHEN, Shiu-Hui LEE, Hsiao-Chih KU, Chih-Ming YU, Hsin-Chang YU
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Patent number: 9641096Abstract: An energy-saving power supply apparatus includes a bridge rectifier, a diode bypass circuit and a control circuit. The diode bypass circuit is electrically connected to the bridge rectifier. The control circuit is electrically connected to the diode bypass circuit and the bridge rectifier. The bridge rectifier includes a plurality of diodes. After the control circuit receives a power start signal, the control circuit is configured to control the diode bypass circuit, so that a part of the diodes are bypassed to save energy.Type: GrantFiled: June 29, 2015Date of Patent: May 2, 2017Assignee: Chicony Power Technology Co., Ltd.Inventors: Wen-Nan Huang, Shiu-Hui Lee, Chih-Ming Yu, Hsin-Chang Yu, Jhen-Siang Huang, Ming-Chieh Cheng, Chang-Li Hsieh, Jung-Shan Hsieh
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Publication number: 20170108557Abstract: An AC inrush current testing device is disclosure. The AC inrush current testing device includes a grid voltage peak point calculator, a grid voltage period and timing detector, a switch, an autotransformer, and a main relay. The grid voltage period and timing detector is connected to an AC power source and the grid voltage peak point calculator. A movable contact of the switch is connected to the AC power source. A first winding of the autotransformer is connected to the AC power source, a second winding of the autotransformer, and a first stationary contact of the switch. A third winding of the autotransformer is connected to a second stationary contact of the switch and the second winding. The main relay is electrically connected to the grid voltage peak point calculator, the second winding, and the third winding. A method for testing AC inrush current is further disclosed.Type: ApplicationFiled: October 16, 2015Publication date: April 20, 2017Inventors: Wen-Nan HUANG, Ming-Tsan LIN, Ching-Guo CHEN, Shiu-Hui LEE, Chih-Ming YU, Hsin-Chang YU, Chang-Li HSIEH
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Patent number: 9584033Abstract: A power supply device includes an output port, a transformer, a power switch, a current sensor, a voltage-dividing controller, a voltage-feedback unit, a voltage comparator, a main controller, and a pulse width modulator. The transformer has two inductances. The power switch is electrically connected to a primary winding of the transformer, the pulse width modulator, and the current sensor coupled to the voltage-dividing controller. The voltage-feedback unit is electrically connected to the voltage-dividing controller, the voltage comparator, and the output port. The main controller is coupled to the pulse width modulator and the voltage comparator.Type: GrantFiled: October 19, 2015Date of Patent: February 28, 2017Assignee: CHICONY POWER TECHNOLOGY CO., LTD.Inventors: Wen-Nan Huang, Ming-Tsan Lin, Ching-Guo Chen, Shiu-Hui Lee, Hsiao-Chih Ku, Chih-Ming Yu, Hsin-Chang Yu
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Publication number: 20160380553Abstract: An energy-saving power supply apparatus includes a bridge rectifier, a diode bypass circuit and a control circuit. The diode bypass circuit is electrically connected to the bridge rectifier. The control circuit is electrically connected to the diode bypass circuit and the bridge rectifier. The bridge rectifier includes a plurality of diodes. After the control circuit receives a power start signal, the control circuit is configured to control the diode bypass circuit, so that a part of the diodes are bypassed to save energy.Type: ApplicationFiled: June 29, 2015Publication date: December 29, 2016Inventors: Wen-Nan HUANG, Shiu-Hui LEE, Chih-Ming YU, Hsin-Chang Yu, Jhen-Siang HUANG, Ming-Chieh CHENG, Chang-Li HSIEH, Jung-Shan HSIEH
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Patent number: 9506961Abstract: A power supply detection apparatus including a base, a couple of longitudinal motion mechanisms, a couple of lateral motion mechanisms, a couple of pin bases and a couple of vertical motion mechanisms is provided. Each lateral motion mechanism is movably arranged on the corresponding longitudinal motion mechanism and thereby driven to move horizontally. Each pin base is driven to move horizontally by the corresponding lateral motion mechanism and a probe is arranged on each pin base. The probe and the perpendicular lateral motion mechanism are moved along respective directions perpendicular with each other. Each vertical motion mechanism is arranged on the corresponding pin base for driving the probe to move vertically. The probes can be thereby moved to automatically detect an electric power status of an electronic component on a circuit board of a power supply.Type: GrantFiled: December 4, 2014Date of Patent: November 29, 2016Assignee: CHICONY POWER TECHNOLOGY CO., LTD.Inventors: Yu-Pu Chiu, Sai-Ting Chou, Hsiao-Chih Ku, Jhen-Siang Huang, Wen-Nan Huang, Ching-Guo Chen, Shiu-Hui Lee
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Publication number: 20160161534Abstract: A power supply detection apparatus including a base, a couple of longitudinal motion mechanisms, a couple of lateral motion mechanisms, a couple of pin bases and a couple of vertical motion mechanisms is provided. Each lateral motion mechanism is movably arranged on the corresponding longitudinal motion mechanism and thereby driven to move horizontally. Each pin base is driven to move horizontally by the corresponding lateral motion mechanism and a probe is arranged on each pin base. The probe and the perpendicular lateral motion mechanism are moved along respective directions perpendicular with each other. Each vertical motion mechanism is arranged on the corresponding pin base for driving the probe to move vertically. The probes can be thereby moved to automatically detect an electric power status of an electronic component on a circuit board of a power supply.Type: ApplicationFiled: December 4, 2014Publication date: June 9, 2016Inventors: Yu-Pu CHIU, Sai-Ting CHOU, HSIAO-CHIH KU, Jhen-Siang HUANG, Wen-Nan HUANG, Ching-Guo CHEN, Shiu-Hui LEE
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Publication number: 20160126825Abstract: A power supply apparatus includes a main power processing circuit and an alternating current power detection circuit. The alternating current power detection circuit is electrically connected to the main power processing circuit. The alternating current power detection circuit includes a rectifying unit and a frequency processing unit. The rectifying unit is electrically connected to the main power processing circuit. The frequency processing unit is electrically connected to the main power processing circuit and the rectifying unit. The rectifying unit rectifies an alternating current power to obtain a rectified power. When a frequency of the rectified power is greater than a predetermined frequency, the frequency processing unit informs the main power processing circuit, so that the main power processing circuit processes the alternating current power to obtain an output direct current power.Type: ApplicationFiled: March 10, 2015Publication date: May 5, 2016Inventors: Wen-Nan HUANG, Shiu-Hui LEE, Yao-Wen TSAI, Ching-Guo CHEN