Delta Electronics (shanghai) Co., Ltd

Delta Electronics, Inc.

Opple Lighting Co., Ltd.

Suzhou Opple Lighting Co., Ltd.

Hongbao Wang

Jinfa Zhang

Dezhi Jiao

Liangliang Ren

Zengyi Lu

Hongyuan Jin

Qingjun Wei

Shiwei Liu

Zhenhua Zhou

Yanling Zong

Kang Guo

The present disclosure relates to a road lighting management system, which includes: a smart lighting management cloud platform, lamp poles, lamps installed on the lamp poles, controllers installed in the lamps, and a mobile terminal; in which one lamp or more lamps are installed on each of the lamp poles; the lamps are in one-to-one correspondence with the controllers; the controllers are respectively connected with the lamps and the smart lighting management cloud platform, and the controllers are configured to control the lamps; the mobile terminal is connected with the smart lighting management cloud platform; and both the mobile terminal and the smart lighting management cloud platform are configured for asset management, and control commands are sent by the mobile terminal to the controllers in the lamps according to an instruction of a user.

Road lighting management system

A transformer is disclosed, including a magnetic core, a bobbin, a primary winding wound around the bobbin, at least a first secondary winding and a second secondary winding and at least one turn of coil of the first secondary winding is adjacent to at least one turn of coil of the second secondary winding, and the first secondary winding and the second secondary winding are applied in a full-wave rectifier circuit. A leakage inductance groove is provided between a primary winding groove for winding the primary winding and a secondary winding groove for winding the secondary winding for isolating the primary winding and the secondary winding.

Transformer

The present disclosure provides a control circuit, where the control circuit includes: a signal detection unit, a zero-crossing detection (ZCD) signal acquisition unit, a pulse width modulation (PWM) control signal generation unit, and a signal processing unit; where the signal detection unit, the ZCD signal acquisition unit, the PWM control signal generation unit and the signal processing unit are connected in cascade. The control circuit provided in the present disclosure reduces processing delay of a ZCD signal and improve signal a processing accuracy of a power factor correction (PFC) system.

Control circuit and control method for outputting pulse width modulation control signal with zero-crossing detection

The present disclosure provides a control circuit and a control method, where the control circuit includes: a signal detection unit, a ZCD signal acquisition unit, a signal selection unit, a frequency limiting unit, and a PWM control signal generation unit; where the signal detection unit, the ZCD signal acquisition unit, the signal selection unit, the frequency limiting unit, and the PWM control signal generation unit are connected in cascade. The control circuit and the control method provided in the present disclosure reduce processing delay of a ZCD signal and improve signal processing accuracy of a PFC system.

Control circuit for outputting pulse width modulation control signal with zero-crossing detection

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Shanghai, China

Hongbao Wang