Yingyan He

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Hangzhou, CN

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Patents Grantslast 30 patents

Information Patent Grant
Flyback converter, constant-current control method, and lighting sy...
- Patent number 12,119,749
- Issue date Oct 15, 2024
- JOULWATT TECHNOLOGY CO., LTD.
- Guoqiang Liu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Control circuit and control method for lighting circuit, and lighti...
- Patent number 10,645,780
- Issue date May 5, 2020
- JOULWATT TECHNOLOGY (HANGZHOU) CO., LTD.
- Zhongwu Wu
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Dimming circuit, dimming method and LED driving circuit
- Patent number 10,327,296
- Issue date Jun 18, 2019
- JOULWATT TECHNOLOGY (HANGZHOU)CO., LTD.
- Guoqiang Liu
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

Information Patent Application
POWER SUPPLY CIRCUIT AND LIGHT-EMITTING DIODE (LED) DRIVING SYSTEM...
- Publication number 20230344341
- Publication date Oct 26, 2023
- Joulwatt Technology Co., Ltd.
- Guoqiang LIU
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
FLYBACK CONVERTER, CONSTANT-CURRENT CONTROL METHOD, AND LIGHTING SY...
- Publication number 20230129443
- Publication date Apr 27, 2023
- Joulwatt Technology Co., Ltd.
- Guoqiang LIU
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Control circuit and control method for lighting circuit, and lighti...
- Publication number 20190350055
- Publication date Nov 14, 2019
- JOULWATT TECHNOLOGY (HANGZHOU) CO., LTD.
- Zhongwu WU
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Application
Dimming Circuit, Dimming Method and LED Driving Circuit
- Publication number 20180192491
- Publication date Jul 5, 2018
- Chipone Technology (Beijing) Co., Ltd.
- Guoqiang Liu
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR