Patents by Inventor Wei-Chi Huang
Wei-Chi Huang 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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Patent number: 8716985Abstract: A power factor correction device comprises a power stage circuit converting input alternating current voltage into input current according to a pulse width modulation signal and outputs the input current to a load generating output voltage on the load, and sampling the input current outputting a correcting current; a current compensating circuit receiving and comparing the correcting current with a reference current signal generating a compensating current signal; a voltage compensating circuit receiving and comparing the output voltage with a reference voltage generating a compensating voltage signal; a multiplication amplifier receiving the compensating current signal and the compensating voltage signal generating an updated reference current signal by multiplying the compensating current signal with the compensating voltage signal; and a pulse width modulation converter receiving the compensating current signal and the compensating voltage signal generating the pulse width modulation signal to synchronizeType: GrantFiled: February 29, 2012Date of Patent: May 6, 2014Assignee: Alpha & Omega Semiconductor, Inc.Inventors: Chung-Ping Ku, Wei-Chi Huang
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Publication number: 20140042924Abstract: A circuit with adjustable phase delay and a feedback voltage includes a delay setting unit and a phase delay signal generator. The delay setting unit generates a delay time according to an external resistor. The phase delay signal generator includes a plurality of phase delay units. Each phase delay unit includes an edge trigger subunit and a signal generation subunit. The edge trigger subunit receives an input signal, and generates a positive edge trigger signal and a negative edge trigger signal according to a positive edge and a negative edge of the input signal, respectively. The signal generation subunit generates and outputs a phase delay signal according to the positive edge trigger signal, the negative edge trigger signal, and the delay time. The phase delay signal lags the input signal for the delay time.Type: ApplicationFiled: March 14, 2013Publication date: February 13, 2014Applicant: LEADTREND TECHNOLOGY CORP.Inventors: Hung-Ching Lee, Yeu-Torng Yau, Wei-Chi Huang
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Publication number: 20130221936Abstract: A power factor correction device comprises a power stage circuit converting input alternating current voltage into input current according to a pulse width modulation signal and outputs the input current to a load generating output voltage on the load, and sampling the input current outputting a correcting current; a current compensating circuit receiving and comparing the correcting current with a reference current signal generating a compensating current signal; a voltage compensating circuit receiving and comparing the output voltage with a reference voltage generating a compensating voltage signal; a multiplication amplifier receiving the compensating current signal and the compensating voltage signal generating an updated reference current signal by multiplying the compensating current signal with the compensating voltage signal; and a pulse width modulation converter receiving the compensating current signal and the compensating voltage signal generating the pulse width modulation signal to synchronizeType: ApplicationFiled: February 29, 2012Publication date: August 29, 2013Inventors: Chung-Ping Ku, Wei-Chi Huang
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Patent number: 8335090Abstract: A solar power supply system includes at least one solar power conversion circuit and an inverter circuit. Each solar power conversion circuit comprises a solar module and a direct current (DC) module. The solar module converts the solar power into the DC signals. The DC module with two-stage conversion comprises a DC transformer circuit and a maximum power point tracking circuit, to boost the DC signals and adjust output power of the solar module to a maximum value. The inverter circuit converts the boosted DC signals output from the solar power conversion circuits into AC signals and combines the AC signals into the AC utility network.Type: GrantFiled: December 30, 2009Date of Patent: December 18, 2012Assignee: Ampower Technology Co., Ltd.Inventors: Wei-Chi Huang, Tsung-Liang Hung, Yu-Hsiao Chao, Chi-Hsiung Lee
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Patent number: 8248749Abstract: An ionic thermal dissipation device includes an ionic wind generation system and a power system. The power system first converts external direct current (DC) power signals into first alternating current (AC) power signals, and boosts, increases voltage, and rectifies the first AC power signals to generate high voltage DC power signals to drive the ionic wind generation system. The power system also detects current signals generated by ion excitation of the ionic wind generation system and voltage signals of the high voltage DC power signals, and regulates the high voltage DC power signals and time of driving the ionic wind generation system according to a first PWM signal and a first analog signal from an electronic device and the detected current signals and voltage signals.Type: GrantFiled: August 27, 2010Date of Patent: August 21, 2012Assignee: Ampower Technology Co., Ltd.Inventors: Wei-Chi Huang, Chi-Hsiung Lee, Yu-Hsiao Chao, Tsung-Liang Hung
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Patent number: 8247996Abstract: A backlight driving system comprises a first inverter circuit, a second inverter circuit, a pulse width modulation (PWM) controller, a frequency regulator and a switch circuit. The pulse width modulation (PWM) controller generates an illumination signal to control the first and second inverter circuits to illuminate first and second backlight units in response to a first enable signal, and generates a maintaining signal to control the first and second inverter circuits to maintain stable lighting of the first and second backlight units in response to a first feedback signal. The frequency regulator controls the PWM controller to generate the illumination signal and the maintaining signal in response to a second enable signal and a second feedback signal, respectively. The switch circuit connects the PWM controller to the second inverter circuit in response to the second enable signal.Type: GrantFiled: March 26, 2010Date of Patent: August 21, 2012Assignee: Ampower Technology Co., Ltd.Inventors: Wei-Chi Huang, Cheng-Ta Lin, Tsung-Liang Hung
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Publication number: 20110308769Abstract: An ionic thermal dissipation device includes an ionic wind generation system and a power system. The power system first converts external direct current (DC) power signals into first alternating current (AC) power signals, and boosts, increases voltage, and rectifies the first AC power signals to generate high voltage DC power signals to drive the ionic wind generation system. The power system also detects current signals generated by ion excitation of the ionic wind generation system and voltage signals of the high voltage DC power signals, and regulates the high voltage DC power signals and time of driving the ionic wind generation system according to a first PWM signal and a first analog signal from an electronic device and the detected current signals and voltage signals.Type: ApplicationFiled: August 27, 2010Publication date: December 22, 2011Applicant: AMPOWER TECHNOLOGY CO., LTD.Inventors: WEI-CHI HUANG, CHI-HSIUNG LEE, YU-HSIAO CHAO, TSUNG-LIANG HUNG
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Publication number: 20110253348Abstract: An ionic thermal dissipation device includes an ionic wind generating system and a power system to drive the ionic wind generating system. The power system first converts external direct current power signals into alternating current (AC) power signals, and boosts the AC power signals. The power system doubles voltage of the boosted AC power signals, and rectifies the boosted AC power signals to generate high voltage direct current power signals to drive the ionic wind generating system. The power system also detects current signals generated by ion excitation of the ionic wind generating system, and regulates the high voltage direct current power signals according to the detected current signals.Type: ApplicationFiled: July 28, 2010Publication date: October 20, 2011Applicant: AMPOWER TECHNOLOGY CO., LTD.Inventors: WEI-CHI HUANG, YU-HSIAO CHAO, TSUNG-LIANG HUNG, CHI-HSIUNG LEE, CHENG-TA LIN
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Publication number: 20110103114Abstract: A solar power supply system includes at least one solar power conversion circuit and an inverter circuit. Each solar power conversion circuit comprises a solar module and a direct current (DC) module. The solar module converts the solar power into the DC signals. The DC module with two-stage conversion comprises a DC transformer circuit and a maximum power point tracking circuit, to boost the DC signals and adjust output power of the solar module to a maximum value. The inverter circuit converts the boosted DC signals output from the solar power conversion circuits into AC signals and combines the AC signals into the AC utility network.Type: ApplicationFiled: December 30, 2009Publication date: May 5, 2011Applicant: AMPOWER TECHNOLOGY CO., LTD.Inventors: WEI-CHI HUANG, TSUNG-LIANG HUNG, YU-HSIAO CHAO, CHI-HSIUNG LEE
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Patent number: 7928668Abstract: A lamp control system driving at least two discharge lamps according to at least two control instructions includes a control circuit, a switch circuit, a transformer resonance circuit, and a source transformer circuit. The control circuit generates a control signal to which the source transformer circuit is electrically connected, transforming the control signal to at least one alternating current (AC) signal, and the transformer resonance circuit is electrically connected to the source transformer circuit and the discharge lamps, transforming the at least one AC signal to one or more electrical signals to respectively drive one or more discharge lamps, the switch circuit, electrically connected to the source transformer circuit and the transformer resonance circuit, drives source transformer circuit output of the at least one AC signals to the transformer resonance circuit.Type: GrantFiled: October 21, 2008Date of Patent: April 19, 2011Assignee: Ampower Technology Co., Ltd.Inventors: Wei-Chi Huang, Chi-Hsiung Lee
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Publication number: 20100289425Abstract: A backlight driving system comprises a first inverter circuit, a second inverter circuit, a pulse width modulation (PWM) controller, a frequency regulator and a switch circuit. The pulse width modulation (PWM) controller generates an illumination signal to control the first and second inverter circuits to illuminate first and second backlight units in response to a first enable signal, and generates a maintaining signal to control the first and second inverter circuits to maintain stable lighting of the first and second backlight units in response to a first feedback signal. The frequency regulator controls the PWM controller to generate the illumination signal and the maintaining signal in response to a second enable signal and a second feedback signal, respectively. The switch circuit connects the PWM controller to the second inverter circuit in response to the second enable signal.Type: ApplicationFiled: March 26, 2010Publication date: November 18, 2010Applicant: AMPOWER TECHNOLOGY CO., LTD.Inventors: WEI-CHI HUANG, CHENG-TA LIN, TSUNG-LIANG HUNG
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Patent number: 7830102Abstract: A light source driving device for driving a light source module (22), includes a power stage circuit (20), a transformer and resonance circuit (21), a current balancing circuit (23), a feedback control circuit (25) and an fault detecting circuit (24). The power stage circuit converts received signals to alternating current (AC) signals. The transformer and resonance circuit converts the AC signals to electrical signals. The current balancing circuit balances current flowing through the light source module. The fault detecting circuit comprises a plurality of inputs (a1), (a2n (n=1, 2, 3, . . . , n)) and an output (b1). One of inputs is connected to one input of the current balancing circuit, other inputs are connected to outputs of the current balancing circuit, and the output outputs a fault signal. The feedback control circuit is used for controlling output of the power stage circuit.Type: GrantFiled: April 10, 2008Date of Patent: November 9, 2010Assignee: Hon Hai Precision Industry Co., Ltd.Inventors: Wei-Chi Huang, Chi-Hsiung Lee
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Publication number: 20090284173Abstract: A lamp control system driving at least two discharge lamps according to at least two control instructions includes a control circuit, a switch circuit, a transformer resonance circuit, and a source transformer circuit. The control circuit generates a control signal to which the source transformer circuit is electrically connected, transforming the control signal to at least one alternating current (AC) signal, and the transformer resonance circuit is electrically connected to the source transformer circuit and the discharge lamps, transforming the at least one AC signal to one or more electrical signals to respectively drive one or more discharge lamps, the switch circuit, electrically connected to the source transformer circuit and the transformer resonance circuit, drives source transformer circuit output of the at least one AC signals to the transformer resonance circuit.Type: ApplicationFiled: October 21, 2008Publication date: November 19, 2009Applicant: AMPOWER TECHNOLOGY CO., LTD.Inventors: WEI-CHI HUANG, CHI-HSIUNG LEE
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Publication number: 20080252231Abstract: A light source driving device for driving a light source module (22), includes a power stage circuit (20), a transformer and resonance circuit (21), a current balancing circuit (23), a feedback control circuit (25) and an fault detecting circuit (24). The power stage circuit converts received signals to alternating current (AC) signals. The transformer and resonance circuit converts the AC signals to electrical signals. The current balancing circuit balances current flowing through the light source module. The fault detecting circuit comprises a plurality of inputs (a1), (a2n (n=1, 2, 3, . . . , n)) and an output (b1). One of inputs is connected to one input of the current balancing circuit, other inputs are connected to outputs of the current balancing circuit, and the output outputs a fault signal. The feedback control circuit is used for controlling output of the power stage circuit.Type: ApplicationFiled: April 10, 2008Publication date: October 16, 2008Applicant: HON HAI PRECISION INDUSTRY CO., LTD.Inventors: WEI-CHI HUANG, CHI-HSIUNG LEE