公开(公告)号：US20150195889A1

公开(公告)日：2015-07-09

申请号：US14290669

申请日：2014-05-29

Applicant: DELTA ELECTRONICS, INC.

Inventor： Ching-Ho CHOU ,  Yung-Chuan LU ,  Yen-Yu CHEN

IPC: H05B37/02

CPC classification number: H05B41/2828 ,  H05B37/02

Abstract: A fluorescent electronic ballast including: a rectifier circuit, for receiving an AC power supply and converting the AC power supply into a DC power supply; an inverter circuit, coupled to a fluorescent driver circuit, for converting the DC power supply into a high-frequency AC power supply for driving a fluorescent; and a detection protection circuit, coupled to the rectifier circuit and the inverter circuit, for detecting the DC power supply provided by the rectifier circuit, and cutting off the electric connection between a control chip of the inverter circuit and all of power supply when the voltage of the direct current power supply is lower than a predetermined value, wherein the power supply at least includes the direct current power supply provided by the rectifier circuit.

Abstract translation: 一种荧光电子镇流器，包括：整流器电路，用于接收AC电源并将AC电源转换成DC电源; 耦合到荧光驱动电路的逆变器电路，用于将DC电源转换成用于驱动荧光的高频AC电源; 以及与整流电路和逆变器电路耦合的检测保护电路，用于检测由整流电路提供的直流电源，并且当电压为5V时，切断逆变电路的控制芯片与所有电源之间的电连接 所述直流电源低于预定值，其中所述电源至少包括由所述整流电路提供的直流电源。

公开(公告)号：US20210092814A1

公开(公告)日：2021-03-25

申请号：US16848836

申请日：2020-04-15

Applicant: DELTA ELECTRONICS, INC.

Inventor： Ching-Ho CHOU ,  Yung-Chuan LU

IPC: H05B45/34 ,  H05B45/38

Abstract: An operating method for a light-emitting diode (LED) power supply includes the following operations: controlling an output voltage to be a first voltage by a control circuit; detecting a load current by a detection circuit; maintaining the output voltage as the first voltage by a constant voltage control circuit when the load current is greater than zero, changing the output voltage from the first voltage to a second voltage by the control circuit when the load current is equal to zero, and the second voltage being greater than the first voltage.

公开(公告)号：US20240130014A1

公开(公告)日：2024-04-18

申请号：US18155509

申请日：2023-01-17

Applicant: DELTA ELECTRONICS, INC.

Inventor： Ching-Ho CHOU ,  Yung-Chuan LU

IPC: H05B45/10 ,  H05B45/3725

CPC classification number: H05B45/10 ,  H05B45/3725

Abstract: A LED power supply with bi-level dimming receives an input voltage to supply power to an LED lamp, and adjusts the brightness of the LED lamp according to whether an external detection switch is triggered to be turned on. The LED power supply includes a conversion circuit, a switch, and an oscillation circuit. The conversion circuit converts the input voltage into an output voltage, and provides the output voltage to supply power to the LED lamp so as to control the LED lamp to provide a first brightness. The oscillation circuit provides a dimming signal with a fixed frequency and a duty cycle to the switch when the external detection switch is turned on so as to turn on and turn off the switch. The switch correspondingly adjusts the output voltage according to the dimming signal to control the LED lamp to provide a second brightness.

公开(公告)号：US20240130013A1

公开(公告)日：2024-04-18

申请号：US18152446

申请日：2023-01-10

Applicant: DELTA ELECTRONICS, INC.

Inventor： Ching-Ho CHOU ,  Yung-Chuan LU

IPC: H05B45/10 ,  H05B45/355

CPC classification number: H05B45/10 ,  H05B45/355

Abstract: A bi-level dimming LED power supply equipment adjusts the brightness of a plurality of LED lights according to whether an external detection switch is triggered turned on. The LED power supply equipment includes a plurality of LED power supplies, and the LED power supplies respectively include an input end and an output end. The input end receives an input voltage, and the output end includes a bus positive end, a bus negative end and a dimming end. The dimming end is commonly coupled to a first end of the external detection switch, and one of the bus positive end or the bus negative end is commonly coupled to a second end of the external detection switch and one end of the LED lights, and the other one of the bus positive end or the bus negative end is respectively coupled to the other ends of the LED lights.

公开(公告)号：US20170142794A1

公开(公告)日：2017-05-18

申请号：US15141419

申请日：2016-04-28

Applicant: Delta Electronics, Inc.

Inventor： Ching-Ho CHOU ,  Yung-Chuan LU

IPC: H05B33/08 ,  H05B41/298 ,  H05B41/392

CPC classification number: H05B33/0845 ,  H05B33/0815 ,  H05B33/0887 ,  H05B37/02 ,  H05B41/2828 ,  H05B41/2983 ,  H05B41/3921

Abstract: A dimmable instant-start ballast for a plurality of LED lamps and/or a plurality of fluorescent lamps is provided, which includes an isolated dimming interface, a duty control device, a dimming switch, and an inverter circuit. The isolated dimming interface receives a dimming signal to generate a dimming voltage. The duty control device generates an operation signal according to the dimming voltage. The dimming switch periodically couples a first node to a ground according to the operation signal. The inverter circuit receives a rectified voltage and is coupled to the first node. When the first node is coupled to the ground terminal, the inverter circuit provides a lamp current for the LED lamps and/or the fluorescent lamps.