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公开(公告)号:US20170135170A1
公开(公告)日:2017-05-11
申请号:US14983947
申请日:2015-12-30
Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
Inventor: Che-Min Kung , Tse-Hsu Wu , Jung-Min Hwang , Shun-Yi Yang
IPC: H05B33/08
CPC classification number: H05B33/0845 , H05B33/0809 , H05B33/083
Abstract: A dimming control method and circuit thereof are provided. After receiving a TRIAC signal with at least one positive/negative half cycle waveforms, the turning points of the positive/negative half cycles are detected to obtain the conduction angles of the positive/negative half cycle waveforms. Then, a pulse width modulated signal with the symmetrical positive and negative half cycle waveforms is rebuilt to control a lamp. Therefore, the disclosure can solve the flickering issue of the lamp.
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公开(公告)号:US12137502B2
公开(公告)日:2024-11-05
申请号:US18078347
申请日:2022-12-09
Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
Inventor: Che-Min Kung , Ching-Ran Lee , Shi-Wei Huang , Wen-Tien Tsai
IPC: H05B45/14 , H05B45/3725 , H05B45/48
Abstract: A linear driving module includes: a control circuit, a dimming module, and a low-dropout regulator. The control circuit generates switch signals in response to a change in a pulsed DC voltage. The dimming module receives the pulsed DC voltage. The dimming module includes dimming units. Light-emitting diode units in the dimming units are in a light-on state or a light-off state. The low-dropout regulator receives an input voltage from the dimming unit, and converts the input voltage into a regulated voltage. The input voltage varies with the number of light-emitting diode units in the light-on state. The input voltage is lower than the pulsed DC voltage, and the regulated voltage is lower than the input voltage.
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公开(公告)号:US09348351B2
公开(公告)日:2016-05-24
申请号:US13942872
申请日:2013-07-16
Applicant: Industrial Technology Research Institute
Inventor: Che-Min Kung , Jung-Min Hwang , Wei-Ming Chen , Chi-Chun Huang
CPC classification number: G05F3/02 , H02M3/07 , Y10T307/747
Abstract: The present disclosure relates to a switch circuit. The switch circuit comprises: a plurality of storing elements and a plurality of switch elements. The plurality of switch elements coupled the plurality of storing elements for generating a step-down mode. Moreover, the switch elements, controllers and parts of resistors in the present disclosure are integrated in an integrated circuit so as to effectively reduce size and weight of the driving circuit, advance the circuit suitability, and decrease the development cost of the circuit.
Abstract translation: 本公开涉及一种开关电路。 开关电路包括:多个存储元件和多个开关元件。 多个开关元件耦合多个存储元件以产生降压模式。 此外,本公开的开关元件,控制器和电阻器的部件集成在集成电路中,以便有效地减小驱动电路的尺寸和重量,提高电路适配性,并降低电路的开发成本。
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公开(公告)号:US20240179812A1
公开(公告)日:2024-05-30
申请号:US18078347
申请日:2022-12-09
Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
Inventor: Che-Min Kung , Ching-Ran Lee , Shi-Wei Huang , Wen-Tien Tsai
CPC classification number: H05B45/14 , H05B45/48 , H05B45/3725
Abstract: A linear driving module includes: a control circuit, a dimming module, and a low-dropout regulator. The control circuit generates switch signals in response to a change in a pulsed DC voltage. The dimming module receives the pulsed DC voltage. The dimming module includes dimming units. Light-emitting diode units in the dimming units are in a light-on state or a light-off state. The low-dropout regulator receives an input voltage from the dimming unit, and converts the input voltage into a regulated voltage. The input voltage varies with the number of light-emitting diode units in the light-on state. The input voltage is lower than the pulsed DC voltage, and the regulated voltage is lower than the input voltage.
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公开(公告)号:US10986715B1
公开(公告)日:2021-04-20
申请号:US16702028
申请日:2019-12-03
Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
Inventor: Ching-Ran Lee , Chi-Chun Huang , Che-Min Kung , Wen-Tien Tsai , Yu-Jen Chen
IPC: H05B45/37 , H05B45/395 , H05B45/20 , H05B45/48 , H05B45/00
Abstract: In driving a segmented LED loading, an alternating current (AC) voltage is rectified into a direct current (DC) voltage; the DC voltage is regulated into an input voltage and the input voltage is maintained higher than a lowest voltage used for lighting at least one LED segment of the segmented LED loading; the input voltage and a current flowing through the segmented LED loading is detected to generate a switch control signal and a current control signal; respective operation states of each of a plurality of switches of a LED segment switch module are controlled by the switch control signal to control each LED segment of the segmented LED loading as power-supply state or no-power-supply state; and the current of the segmented LED loading is regulated based on the current control signal.
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公开(公告)号:US09860950B2
公开(公告)日:2018-01-02
申请号:US14983947
申请日:2015-12-30
Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
Inventor: Che-Min Kung , Tse-Hsu Wu , Jung-Min Hwang , Shun-Yi Yang
CPC classification number: H05B33/0845 , H05B33/0809 , H05B33/083
Abstract: A dimming control method and circuit thereof are provided. After receiving a TRIAC signal with at least one positive/negative half cycle waveforms, the turning points of the positive/negative half cycles are detected to obtain the conduction angles of the positive/negative half cycle waveforms. Then, a pulse width modulated signal with the symmetrical positive and negative half cycle waveforms is rebuilt to control a lamp. Therefore, the disclosure can solve the flickering issue of the lamp.
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