Patents by Inventor De-Zhi Jiao
De-Zhi Jiao 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: 9748036Abstract: A transformer includes a primary winding unit, a secondary winding unit and a magnetic core. The primary winding unit includes a first input primary winding part and a first shielding winding part. The first input primary winding part is electrically connected to at least one switch component, and the first input primary winding part is electrically connected to the first shielding winding part. The secondary winding unit is inductively coupled to the primary winding unit, and the first shielding part is disposed between the first input primary winding part and the secondary winding part. Then, the primary winding unit and the secondary winding unit are assembled to the magnetic core.Type: GrantFiled: March 15, 2017Date of Patent: August 29, 2017Assignee: DELTA ELECTRONICS, INC.Inventors: Zhuang Zuo, Jian Zhou, De-Zhi Jiao
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Publication number: 20170186529Abstract: A transformer includes a primary winding unit, a secondary winding unit and a magnetic core. The primary winding unit includes a first input primary winding part and a first shielding winding part. The first input primary winding part is electrically connected to at least one switch component, and the first input primary winding part is electrically connected to the first shielding winding part. The secondary winding unit is inductively coupled to the primary winding unit, and the first shielding part is disposed between the first input primary winding part and the secondary winding part. Then, the primary winding unit and the secondary winding unit are assembled to the magnetic core.Type: ApplicationFiled: March 15, 2017Publication date: June 29, 2017Inventors: Zhuang ZUO, Jian ZHOU, De-Zhi JIAO
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Patent number: 9666354Abstract: A transformer includes a primary winding unit, a secondary winding unit and a magnetic core. The primary winding unit includes a first input primary winding part and a first shielding winding part. The first input primary winding part is electrically connected to at least one switch component, and the first input primary winding part is electrically connected to the first shielding winding part. The secondary winding unit is inductively coupled to the primary winding unit, and the first shielding part is disposed between the first input primary winding part and the secondary winding part. Then, the primary winding unit and the secondary winding unit are assembled to the magnetic core.Type: GrantFiled: August 30, 2013Date of Patent: May 30, 2017Assignee: DELTA ELECTRONICS, INC.Inventors: Zhuang Zuo, Jian Zhou, De-Zhi Jiao
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Publication number: 20150349645Abstract: A power converter controlling method suitable for a power converter is disclosed. The power converter is configured to output a power to a load. The power converter includes a switch. The power converter controlling method includes the following steps. The power outputted from the power converter to the load is detected and a switching frequency of the switch is adjusted according to the power. When the power is greater than a load threshold, the power converter is set to a first working mode, and the switching frequency of the switch is adjusted according to the power in the first working mode. On the other hand, when the power is smaller than or equal to the load threshold, the power converter is set to a burst mode, and the switching frequency is fixed at a setting frequency value in the burst mode.Type: ApplicationFiled: May 20, 2015Publication date: December 3, 2015Inventors: Dong WEI, De-Zhi JIAO, Dao-Fei XU
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Patent number: 9071026Abstract: The present disclosure provides an energy-saving control device, the control method and a power adapter including the energy-saving control device. The energy-saving control device comprises a mechanical switch having a first end and a second end, wherein the second end is an output end of the switch; a controller of which an input terminal is connected to the output end of the mechanical switch and an output terminal outputs a switching control signal; and a power converter for receiving the switching control signal from the controller, wherein the power converter is operated according to the switching control signal. When a connection cable is plugged into or removed from a cable interface, the first end and the second end of the mechanical switch are contacted or separated.Type: GrantFiled: June 18, 2012Date of Patent: June 30, 2015Assignee: DELTA ELECTRONICS (SHANGHAI) CO., LTD.Inventors: Yuan-Qiang Gu, Guo-Jun Wang, De-Zhi Jiao
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Publication number: 20140347159Abstract: A transformer includes a primary winding unit, a secondary winding unit and a magnetic core. The primary winding unit includes a first input primary winding part and a first shielding winding part. The first input primary winding part is electrically connected to at least one switch component, and the first input primary winding part is electrically connected to the first shielding winding part. The secondary winding unit is inductively coupled to the primary winding unit, and the first shielding part is disposed between the first input primary winding part and the secondary winding part. Then, the primary winding unit and the secondary winding unit are assembled to the magnetic core.Type: ApplicationFiled: August 30, 2013Publication date: November 27, 2014Applicant: DELTA ELECTRONICS, INC.Inventors: Zhuang Zuo, Jian Zhou, De-Zhi Jiao
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Publication number: 20140233267Abstract: A power converter and a method of converting power are provided. The power converter includes a resonant converting circuit and a control circuit. The resonant converting circuit converts an input power into an output power, and provides the output power to a load. The control circuit receives a feedback signal corresponding to the output power and the load, and outputs a driving signal according to the feedback signal to drive the resonant converting circuit. The control circuit selectively adjusts a duty period and an operating frequency of the driving signal according to a power required by the load.Type: ApplicationFiled: October 14, 2013Publication date: August 21, 2014Applicant: DELTA ELECTRONICS, INC.Inventors: Hong-Yuan JIN, Jun LIU, De-Zhi JIAO
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Publication number: 20130200724Abstract: The present disclosure provides an energy-saving control device, the control method and a power adapter including the energy-saving control device. The energy-saving control device comprises a mechanical switch having a first end and a second end, wherein the second end is an output end of the switch; a controller of which an input terminal is connected to the output end of the mechanical switch and an output terminal outputs a switching control signal; and a power converter for receiving the switching control signal from the controller, wherein the power converter is operated according to the switching control signal. When a connection cable is plugged into or removed from a cable interface, the first end and the second end of the mechanical switch are contacted or separated.Type: ApplicationFiled: June 18, 2012Publication date: August 8, 2013Applicant: DELTA ELECTRONICS (SHANGHAI) CO., LTD.Inventors: Yuan-Qiang GU, Guo-Jun WANG, De-Zhi JIAO
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Patent number: 7733669Abstract: A resonant converter and burst mode starting method thereof are provided. The resonant converter includes a converting stage, a transformer to induce the output of converting stage from the primary side to the secondary side, a rectifying stage to rectify the output of the transformer, a filtering and load stage to filter the output of the rectifying stage, and a charge pump circuit coupled to the transformer or the rectifying stage. The charge pump circuit is for raising a voltage level of the filtering and load stage to higher than a predetermined value so that a feedback voltage of the resonant converter varies. The burst mode of the resonant converter is than started in accordance with the variance.Type: GrantFiled: July 30, 2007Date of Patent: June 8, 2010Assignee: Delta Electronics, Inc.Inventors: De-Zhi Jiao, Tao Wu, Dong Lin
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Publication number: 20080043494Abstract: A resonant converter and burst mode starting method thereof are provided. The resonant converter includes a converting stage, a transformer to induce the output of converting stage from the primary side to the secondary side, a rectifying stage to rectify the output of the transformer, a filtering and load stage to filter the output of the rectifying stage, and a charge pump circuit coupled to the transformer or the rectifying stage. The charge pump circuit is for raising a voltage level of the filtering and load stage to higher than a predetermined value so that a feedback voltage of the resonant converter varies. The burst mode of the resonant converter is than started in accordance with the variance.Type: ApplicationFiled: July 30, 2007Publication date: February 21, 2008Applicant: DELTA ELECTRONICS, INC.Inventors: DE-ZHI JIAO, TAO WU, DONG LIN