Delta Electronics, Inc.

Delta Electronics (shanghai) Co., Ltd

Zi-Ying Zhou

Jian-Ping Ying

Min Zhou

Ke Dai

Ming-Hui Dai

Yu Wang

Jian-Hong Zeng

Wei-Qiang Zhang

Ai-Bin Qiu

An electronic device includes a magnetic element, and a first circuit module. The magnetic element includes a magnetic core set and a winding assembled in the magnetic core set. The first circuit module is coupled to the first winding of the magnetic element. A vertical projection area of the first circuit module has an overlap portion with a vertical projection area of the winding of the magnetic core set on a first plane, and the first plane is a horizontal plane at which the winding is located.

Electronic device

A discharge lamp system includes an AC power source, a rectifier, a power factor correction (PFC) circuit, a half-bridge circuit, and a controller. The AC power source provides an AC power. The rectifier converts the AC power into a DC power. The PFC circuit is electrically coupled to the rectifier and is configured for generating an output voltage. The half-bridge circuit is electrically coupled to the PFC circuit and a discharge lamp, and is configured for converting the output voltage into a voltage required by the discharge lamp. The controller is electrically coupled to the PFC circuit and the half-bridge circuit, and includes a timer for counting time, in which the controller controls the output voltage of the PFC circuit in accordance with a time period counted by the timer.

Discharge lamp system and controlling method of the same

A sampling method with adjusting duty ratios is provided and includes the following steps. A first working pulse signal which has a pulse-width duty ratio D in a switching period Tis provided. A first adjusting period comprising first N successive switching periods of the first working pulse signal is set, wherein N is a natural number larger than 1. A second working pulse signal which has second N successive switching periods with their corresponding pulse-width duty ratio D, D, . . . , Dto drive the switch in the converter circuit is provided and the measured signal is generated, wherein the sum of D, D, . . . , Dsubstantially equals to N&#xb7;D and the second N successive switching periods constitute a second adjusting period.

Sampling method with adjusting duty ratios

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Taoyuan, Taiwan

Zi-Ying Zhou