Patents by Inventor Cheng-Te Tsai
Cheng-Te Tsai 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: 12334804Abstract: An improved switching power converting apparatus (10) includes a power converting circuit (102), a sampling circuit (104), a signal gain adjustment circuit (106), a frequency limiting circuit (108) and a pulse width modulation controller (110). The sampling circuit (104) is configured to detect the power converting circuit (102) to obtain a sampled signal (Vs) and transmit the sampled signal (Vs) to the signal gain adjustment circuit (106). The signal gain adjustment circuit (106) is configured to adjust the sampled signal (Vs) to obtain a control signal (Vcon) and transmit the control signal (Vcon) to the frequency limiting circuit (108). The pulse width modulation controller (110) is configured to control an operating frequency of the pulse width modulation controller (110) based on the control signal (Vcon).Type: GrantFiled: February 2, 2023Date of Patent: June 17, 2025Assignee: P-DUKE TECHNOLOGY CO., LTD.Inventors: Hao-Jen Wang, Cheng-Te Tsai, Hsiao-Hua Chi, Lien-Hsing Chen, Chun-Ping Chang, Liang-Jhou Dai
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Publication number: 20240266938Abstract: An improved switching power converting apparatus (10) includes a power converting circuit (102), a sampling circuit (104), a signal gain adjustment circuit (106), a frequency limiting circuit (108) and a pulse width modulation controller (110). The sampling circuit (104) is configured to detect the power converting circuit (102) to obtain a sampled signal (Vs) and transmit the sampled signal (Vs) to the signal gain adjustment circuit (106). The signal gain adjustment circuit (106) is configured to adjust the sampled signal (Vs) to obtain a control signal (Vcon) and transmit the control signal (Vcon) to the frequency limiting circuit (108). The pulse width modulation controller (110) is configured to control an operating frequency of the pulse width modulation controller (110) based on the control signal (Vcon).Type: ApplicationFiled: February 2, 2023Publication date: August 8, 2024Inventors: Hao-Jen WANG, Cheng-Te TSAI, Hsiao-Hua CHI, Lien-Hsing CHEN, Chun-Ping CHANG, Liang-Jhou DAI
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Patent number: 11769625Abstract: A transformer apparatus reducing magnetic field interference includes an iron core, a first side coil unit, a second side coil unit, a first current transmission line, a second current transmission line and a third current transmission line. Both the first side coil unit and the second side coil unit are wound around the iron core. The first side coil unit is connected to the first current transmission line and the second current transmission line. The second current transmission line is connected to the third current transmission line. The first current transmission line includes a first current conduction segment and a first insulation layer. The first insulation layer coats the first current conduction segment. The third current transmission line includes a second current conduction segment and a second insulation layer. The second insulation layer coats the second current conduction segment. The second insulation layer touches the first insulation layer.Type: GrantFiled: December 8, 2020Date of Patent: September 26, 2023Assignee: P-DUKE TECHNOLOGY CO., LTD.Inventors: Lien-Hsing Chen, Cheng-Te Tsai, Sheng-Ken Huang
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Publication number: 20220181075Abstract: A transformer apparatus reducing magnetic field interference includes an iron core, a first side coil unit, a second side coil unit, a first current transmission line, a second current transmission line and a third current transmission line. Both the first side coil unit and the second side coil unit are wound around the iron core. The first side coil unit is connected to the first current transmission line and the second current transmission line. The second current transmission line is connected to the third current transmission line. The first current transmission line includes a first current conduction segment and a first insulation layer. The first insulation layer coats the first current conduction segment. The third current transmission line includes a second current conduction segment and a second insulation layer. The second insulation layer coats the second current conduction segment. The second insulation layer touches the first insulation layer.Type: ApplicationFiled: December 8, 2020Publication date: June 9, 2022Inventors: Lien-Hsing CHEN, Cheng-Te TSAI, Sheng-Ken HUANG
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Patent number: 9614363Abstract: An under voltage protection device includes a voltage detector and a starting unit. The voltage detector includes a diode, a variable resistor, a transistor and a fixed-resistance resistor. The starting unit includes a second transistor. When a voltage of the external voltage source is smaller than a voltage of the diode, a voltage between an emitter node and an collector node of the first transistor is smaller than a threshold voltage present between a gate node of and a source node of the second transistor such that the starting unit is turned off. When the voltage of the external voltage source is larger than the voltage of the diode, the voltage between the emitter node and the collector node is larger than the threshold voltage present between the gate node and the source node such that the starting unit is turned on.Type: GrantFiled: September 25, 2015Date of Patent: April 4, 2017Assignee: Power Mate Technology Co., Ltd.Inventors: Lien-Hsing Chen, Cheng-Te Tsai, Sheng-Ken Huang
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Publication number: 20160094024Abstract: An under voltage protection device includes a voltage detector and a starting unit. The voltage detector includes a diode, a variable resistor, a transistor and a fixed-resistance resistor. The starting unit includes a second transistor. When a voltage of the external voltage source is smaller than a voltage of the diode, a voltage between an emitter node and an collector node of the first transistor is smaller than a threshold voltage present between a gate node of and a source node of the second transistor such that the starting unit is turned off. When the voltage of the external voltage source is larger than the voltage of the diode, the voltage between the emitter node and the collector node is larger than the threshold voltage present between the gate node and the source node such that the starting unit is turned on.Type: ApplicationFiled: September 25, 2015Publication date: March 31, 2016Inventors: LIEN-HSING CHEN, CHENG-TE TSAI, SHENG-KEN HUANG
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Patent number: 9148066Abstract: A miniaturized voltage-transforming device includes a first circuit board and a second circuit board parallel to and separated from each other by a predetermined distance so that there is no physical connection therebetween, and a transformer having a plurality of primary-side pins and a plurality of secondary-side pins, wherein the transformer is located beside the first circuit board and the second circuit board, and has its primary-side pins and secondary-side pins directly or indirectly connected to the first circuit board and the second circuit board physically, so that the transformer is electrically connected to the first circuit board and the second circuit board via the primary-side pins and the secondary-side pins.Type: GrantFiled: August 6, 2012Date of Patent: September 29, 2015Assignee: POWER MATE TECHNOLOGY CO., LTD.Inventors: Lien-Hsing Chen, Li-Hao Liu, Cheng-Te Tsai
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Publication number: 20130328543Abstract: A miniaturized voltage-transforming device includes a first circuit board and a second circuit board parallel to and separated from each other by a predetermined distance so that there is no physical connection therebetween, and a transformer having a plurality of primary-side pins and a plurality of secondary-side pins, wherein the transformer is located beside the first circuit board and the second circuit board, and has its primary-side pins and secondary-side pins directly or indirectly connected to the first circuit board and the second circuit board physically, so that the transformer is electrically connected to the first circuit board and the second circuit board via the primary-side pins and the secondary-side pins.Type: ApplicationFiled: August 6, 2012Publication date: December 12, 2013Inventors: Lien-Hsing CHEN, Li-Hao Liu, Cheng-Te Tsai