Patents by Inventor Po-Nien Ko
Po-Nien Ko 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: 11637399Abstract: A connector combination structure is provided. The connector combination structure includes a first connector and a second connector. The first connector includes a first joint and at least one wedging portion. The second connector includes a housing, a second joint and at least one wedging arm. The second joint and the wedging arm are disposed in the housing. The wedging arm is adapted to be rotated between a first arm position and a second arm position. The first joint is adapted to be inserted into the housing to be connected to the second joint. When the wedging arm is located in the first arm position, the wedging arm is adapted to wedge the wedging portion. When the wedging arm is in the second arm position, the wedging arm is adapted to release the wedging portion.Type: GrantFiled: August 4, 2021Date of Patent: April 25, 2023Assignee: WISTRON NEWEB CORP.Inventors: Che-Min Lin, Po-Nien Ko, Yi-Chieh Wang, Po-Wen Wang
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Publication number: 20220216648Abstract: A connector combination structure is provided. The connector combination structure includes a first connector and a second connector. The first connector includes a first joint and at least one wedging portion. The second connector includes a housing, a second joint and at least one wedging arm. The second joint and the wedging arm are disposed in the housing. The wedging arm is adapted to be rotated between a first arm position and a second arm position. The first joint is adapted to be inserted into the housing to be connected to the second joint. When the wedging arm is located in the first arm position, the wedging arm is adapted to wedge the wedging portion. When the wedging arm is in the second arm position, the wedging arm is adapted to release the wedging portion.Type: ApplicationFiled: August 4, 2021Publication date: July 7, 2022Inventors: Che-Min LIN, Po-Nien KO, Yi-Chieh WANG, Po-Wen WANG
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Publication number: 20150022120Abstract: A switchable constant current constant voltage supply unit outputs a constant current to drive a plurality of light emitting diode apparatuses when voltages of the light emitting diode apparatuses are not greater than a threshold voltage detected by a voltage detection unit. The switchable constant current constant voltage supply unit outputs a constant voltage to drive the light emitting diode apparatuses when the voltages of the light emitting diode apparatuses detected by the voltage detection unit are greater than the threshold voltage. Moreover, the light emitting diode apparatus includes a positive temperature coefficient thermistor or a polymeric positive temperature coefficient thermistor.Type: ApplicationFiled: June 2, 2014Publication date: January 22, 2015Applicant: Energy Pro Technology Co., LTD.Inventor: Po-Nien KO
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Publication number: 20140168905Abstract: The electric box includes a box body, a control assembly and a protection structure. The box body has a chamber. The control assembly is received in the chamber. The protection structure includes a protector and at least one passing hole located on a side of the box body and communicating with the chamber. The protector is received in the chamber and located on a side of the control assembly. The protector is provided with at least one through hole corresponding to the at least one passing hole. The passing hole and through hole are used for being passed by a wire.Type: ApplicationFiled: December 16, 2012Publication date: June 19, 2014Applicant: ENERGY PRO TECHNOLOGY CO., LTD.Inventor: Po-Nien KO
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Patent number: 8569967Abstract: A LED backlight module includes a substrate, a heat-dissipating plate, a LED string and a backlight driving circuit. The LED string includes plural LEDs. The LED string further includes a positive driving terminal, a negative driving terminal and a connecting terminal. A positive output terminal, a negative output terminal and a zero voltage terminal of the backlight driving circuit are respectively connected with the positive driving terminal, the negative driving terminal and the heat-dissipating plate, so that a positive driving voltage and a negative driving voltage are generated by the backlight driving circuit to drive illumination of the LED string. A first number of LEDs of the LED string are electrically connected between the connecting terminal and the positive driving terminal. A second number of LEDs of the LED string are electrically connected between the connecting terminal and the negative driving terminal.Type: GrantFiled: January 28, 2011Date of Patent: October 29, 2013Assignee: Delta Electronics, Inc.Inventors: Shih-Hsien Chang, Po-Nien Ko
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Patent number: 8373304Abstract: A current-sharing supply circuit includes a current providing circuit, a first output rectifier circuit, a second output rectifier circuit, a first current-sharing transformer, a second current-sharing transformer, a first current-sharing circuit and a second current-sharing circuit. By adjusting the equivalent impedance values of the first current-sharing circuit, the second current-sharing circuit, the primary winding coil of the first current-sharing transformer and the primary winding coil of the second current-sharing transformer, the first output current and the second output current are substantially identical.Type: GrantFiled: July 6, 2010Date of Patent: February 12, 2013Assignee: Delta Electronics, Inc.Inventors: Shih-Hsien Chang, Po-Nien Ko
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Patent number: 8374010Abstract: A power supply circuit for receiving an input voltage to drive a plurality of loads is disclosed. The power supply circuit comprises a plurality of switch circuits, a plurality of power conversion circuits and a phase delay circuit. The plurality of switch circuits are connected with the plurality of loads, respectively. The plurality of power conversion circuits are connected with the plurality of loads and the plurality of switch circuits, respectively, for converting the input voltage into a plurality of driving voltages and transmitting the plurality of driving voltages to the plurality of loads, respectively, when the plurality of switch circuits are conducted.Type: GrantFiled: July 14, 2010Date of Patent: February 12, 2013Assignee: Delta Electronics, Inc.Inventors: Shih-Hsien Chang, Po-Nien Ko
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Publication number: 20120293072Abstract: A frequency-variable dimming control apparatus for a plurality of light-emitting diodes (LEDs) and a method for operating the same are disclosed. The frequency-variable dimming control apparatus is provided for dimming the LEDs. The frequency-variable dimming control apparatus includes a DC/AC converter, a resonance circuit, a transformer, a current-sensing unit, and a control unit. The DC/AC converter receives and converts a DC input voltage into an AC voltage. The resonance circuit is electrically connected to the DC/AC converter to receive and converter the AC voltage into a resonance voltage. The transformer receives the resonance voltage and outputs an AC driven voltage. The current-sensing unit is electrically connected to a secondary-side winding of the transformer to output a current frequency signal. The control unit is electrically connected to the current-sensing unit and the DC/AC converter to receive a dimming control signal for dimming the LEDs.Type: ApplicationFiled: September 23, 2011Publication date: November 22, 2012Inventors: Shih-Hsien CHANG, Po-Nien Ko
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Publication number: 20120268024Abstract: A current-sharing backlight driving circuit for light-emitting diodes and a method for operating the same are disclosed. The current-sharing backlight driving circuit includes a class-E converter and a plurality of power processing units. The class-E converter receives a DC input voltage and produces an AC output voltage. The AC output voltage outputted from the class-E converter is converted into a DC driven voltage thorough the power processing units, thus driving the light-emitting diodes and providing a current-sharing backlight operation.Type: ApplicationFiled: June 9, 2011Publication date: October 25, 2012Inventors: Shih-Hsien CHANG, Po-Nien KO
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Patent number: 8080947Abstract: A current-sharing transformer includes a magnetic core assembly, a primary winding coil and multiple secondary winding coils. The magnetic core assembly includes a main magnetic post and multiple minor magnetic posts. The primary winding coil is wound around the main magnetic post. The secondary winding coils wound around respective minor magnetic posts. The secondary winding coils are connected to respective DC loads through respective rectifier circuits. The magnetic paths between respective minor magnetic posts and the main magnetic post are equal, so that the magnitudes of currents passing through the DC loads are balanced by the current-sharing transformer.Type: GrantFiled: June 24, 2009Date of Patent: December 20, 2011Assignee: Delta Electronics, Inc.Inventors: Shih-Hsien Chang, Po-Nien Ko
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Publication number: 20110187269Abstract: A LED backlight module includes a substrate, a heat-dissipating plate, a LED string and a backlight driving circuit. The LED string includes plural LEDs. The LED string further includes a positive driving terminal, a negative driving terminal and a connecting terminal. A positive output terminal, a negative output terminal and a zero voltage terminal of the backlight driving circuit are respectively connected with the positive driving terminal, the negative driving terminal and the heat-dissipating plate, so that a positive driving voltage and a negative driving voltage are generated by the backlight driving circuit to drive illumination of the LED string. A first number of LEDs of the LED string are electrically connected between the connecting terminal and the positive driving terminal. A second number of LEDs of the LED string are electrically connected between the connecting terminal and the negative driving terminal.Type: ApplicationFiled: January 28, 2011Publication date: August 4, 2011Applicant: DELTA ELECTRONICS, INC.Inventors: Shih-Hsien Chang, Po-Nien Ko
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Patent number: 7944090Abstract: A multi-output power conversion circuit is provided for converting an input voltage into a standby voltage and a first output voltage. The multi-output power conversion circuit includes a transformer, a power switching circuit, a first rectifier-filter circuit, a second rectifier-filter circuit, a first switching circuit, a voltage-adjusting circuit, a feedback circuit and a power control circuit. The feedback circuit is connected to the first rectifier-filter circuit, the second rectifier-filter circuit and the system circuit. The feedback circuit generates a feedback voltage according to a power-status signal issued by the system circuit. The power control circuit is interconnected between the power switching circuit and the feedback circuit for controlling on/off statuses of the power switching circuit according to the feedback voltage. The feedback circuit generates the feedback voltage according to the power-status signal and selectively according to the first DC voltage or the second DC voltage.Type: GrantFiled: March 30, 2009Date of Patent: May 17, 2011Assignee: Delta Electronics, Inc.Inventors: Shih-Hsien Chang, Po-Nien Ko
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Publication number: 20110012881Abstract: A power supply circuit for receiving an input voltage to drive a plurality of loads is disclosed. The power supply circuit comprises a plurality of switch circuits, a plurality of power conversion circuits and a phase delay circuit. The plurality of switch circuits are connected with the plurality of loads, respectively. The plurality of power conversion circuits are connected with the plurality of loads and the plurality of switch circuits, respectively, for converting the input voltage into a plurality of driving voltages and transmitting the plurality of driving voltages to the plurality of loads, respectively, when the plurality of switch circuits are conducted.Type: ApplicationFiled: July 14, 2010Publication date: January 20, 2011Inventors: Shih-Hsien Chang, Po-Nien Ko
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Publication number: 20110006604Abstract: A current-sharing supply circuit includes a current providing circuit, a first output rectifier circuit, a second output rectifier circuit, a first current-sharing transformer, a second current-sharing transformer, a first current-sharing circuit and a second current-sharing circuit. By adjusting the equivalent impedance values of the first current-sharing circuit, the second current-sharing circuit, the primary winding coil of the first current-sharing transformer and the primary winding coil of the second current-sharing transformer, the first output current and the second output current are substantially identical.Type: ApplicationFiled: July 6, 2010Publication date: January 13, 2011Applicant: DELTA ELECTRONICS, INC.Inventors: Shih-Hsien Chang, Po-Nien Ko
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Publication number: 20110006605Abstract: A current-sharing supply circuit is provided for driving a first set of main DC loads, a first set of minor DC loads, a second set of main DC loads and a second set of minor DC loads. The current-sharing supply circuit includes a current providing circuit, a first output rectifier circuit, a second output rectifier circuit, a first main current-sharing circuit and a second main current-sharing circuit. By adjusting an equivalent impedance value of the first main current-sharing circuit to be impedance matched with that of the first set of main DC loads and that of the first set of minor DC loads, respectively, and adjusting an equivalent impedance value of the second main current-sharing circuit to be impedance matched with that of the second set of main DC loads and that of the second set of minor DC loads, respectively, a first main output current, a first minor output current, a second main output current and a second minor output current passing through these DC loads are substantially identical.Type: ApplicationFiled: July 6, 2010Publication date: January 13, 2011Applicant: DELTA ELECTRONICS, INC.Inventors: Shih-Hsien Chang, Po-Nien Ko
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Publication number: 20100270947Abstract: A current-sharing supply circuit includes a current providing circuit, a current-sharing circuit, a first output rectifier circuit and a second output rectifier circuit. The current providing circuit receives an input voltage and generating a first current or a first voltage, thereby providing electrical energy to a first set of DC loads and a second set of DC loads. The first output rectifier circuit is interconnected between the first set of DC loads and a first output terminal of the current-sharing circuit, thereby generating a first output current to the first set of DC loads. The second output rectifier circuit is interconnected between the second set of DC loads and a second output terminal of the current-sharing circuit, thereby generating a second output current to the second set of DC loads. The first output current and the second output current are balanced by the current-sharing circuit.Type: ApplicationFiled: April 1, 2010Publication date: October 28, 2010Applicant: DELTA ELECTRONICS, INC.Inventors: Shih-Hsien Chang, Po-Nien Ko
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Publication number: 20100270945Abstract: A current-sharing transformer includes a magnetic core assembly, a primary winding coil and multiple secondary winding coils. The magnetic core assembly includes a main magnetic post and multiple minor magnetic posts. The primary winding coil is wound around the main magnetic post. The secondary winding coils wound around respective minor magnetic posts. The secondary winding coils are connected to respective DC loads through respective rectifier circuits. The magnetic paths between respective minor magnetic posts and the main magnetic post are equal, so that the magnitudes of currents passing through the DC loads are balanced by the current-sharing transformer.Type: ApplicationFiled: June 24, 2009Publication date: October 28, 2010Applicant: DELTA ELECTRONICS, INC.Inventors: Shih-Hsien Chang, Po-Nien Ko
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Publication number: 20100133905Abstract: A multi-output power conversion circuit is provided for converting an input voltage into a standby voltage and a first output voltage. The multi-output power conversion circuit includes a transformer, a power switching circuit, a first rectifier-filter circuit, a second rectifier-filter circuit, a first switching circuit, a voltage-adjusting circuit, a feedback circuit and a power control circuit. The feedback circuit is connected to the first rectifier-filter circuit, the second rectifier-filter circuit and the system circuit. The feedback circuit generates a feedback voltage according to a power-status signal issued by the system circuit. The power control circuit is interconnected between the power switching circuit and the feedback circuit for controlling on/off statuses of the power switching circuit according to the feedback voltage. The feedback circuit generates the feedback voltage according to the power-status signal and selectively according to the first DC voltage or the second DC voltage.Type: ApplicationFiled: March 30, 2009Publication date: June 3, 2010Applicant: DELTA ELECTRONICS, INC.Inventors: Shih-Hsien Chang, Po-Nien Ko