High performance linear LED driving circuit

    公开(公告)号:US09967929B1

    公开(公告)日:2018-05-08

    申请号:US15412435

    申请日:2017-01-23

    IPC分类号: H05B37/00 H05B37/02 H05B33/08

    摘要: A high performance linear driving circuit converting an AC voltage of an external power supply into a DC output current and then outputs the DC current to at least one LED includes a detection unit, a control unit and a current unit. In a 180-degree phase sine wave period of the AC voltage, the total current of the output current is formed by a first working section, an energy saving section and a second working section, and the detection unit detects at least a voltage value of the AC voltage or a current value of the output current to generate a detection signal, and drives the control unit to modulate the duty cycle and current value of the first working section, energy saving section and second working section, and the amounts of current of the first and second working sections are greater than that of the energy saving section.

    Electromagnetic coupling multi-output control circuit
    3.
    发明授权
    Electromagnetic coupling multi-output control circuit 有权
    电磁耦合多输出控制电路

    公开(公告)号:US08853970B1

    公开(公告)日:2014-10-07

    申请号:US13855123

    申请日:2013-04-02

    摘要: Disclosed is an electromagnetic coupling multi-output control circuit having a detection unit, a switching unit and a coupling unit, and the coupling unit is coupled to a side of a transformer of a power driving device to sense and produce a second driving voltage, such that the transformer has a multi-output function. The switching unit is provided for receiving and outputting the second driving voltage to a second driving load, and the detection unit is provided for detecting the second driving voltage to produce a detection value, so that the switching unit analyzes the detection value and switches outputting a frequency of the second driving voltage to stabilize the voltage value of the second driving voltage, so as to flexibly increase the number of output voltages of the power driving device while lowering the cost and expand the scope of applicability.

    摘要翻译: 公开了具有检测单元,开关单元和耦合单元的电磁耦合多输出控制电路,并且耦合单元耦合到功率驱动装置的变压器的侧面以感测和产生第二驱动电压,例如 变压器具有多输出功能。 开关单元用于将第二驱动电压接收并输出到第二驱动负载,并且检测单元用于检测第二驱动电压以产生检测值,使得开关单元分析检测值并切换输出 第二驱动电压的频率,以稳定第二驱动电压的电压值,从而在降低成本的同时灵活地增加电力驱动装置的输出电压的数量并扩大适用范围。

    LED element with color light enhancement function
    4.
    发明授权
    LED element with color light enhancement function 有权
    LED元件具有色光增强功能

    公开(公告)号:US09013108B1

    公开(公告)日:2015-04-21

    申请号:US14103125

    申请日:2013-12-11

    IPC分类号: H05B37/00 H05B33/08

    CPC分类号: H05B33/0824 H05B33/0857

    摘要: An LED element with a color light enhancement function is a two-terminal element for receiving a driving current to emit light and includes at least one blue LED chip, at least one red LED chip and a three-way compensator. The three-way compensator intercepts a driving current passing through the blue LED chip depending on a proportion value according to a change of working temperature and adjusts the amount of current flowing into the red LED chip. If the working temperature exceeds a default value, an input terminal of the three-way compensator is triggered to intercept the driving current and generate and output a set current to the red LED chip to compensate an attenuation of the red LED chip caused by high temperature. The LED element will not be changed its intensity after a prolonged period of usage.

    摘要翻译: 具有彩色光增强功能的LED元件是用于接收驱动电流以发光的两端元件,并且包括至少一个蓝色LED芯片,至少一个红色LED芯片和三路补偿器。 根据工作温度的变化,三路补偿器根据比例值截取通过蓝色LED芯片的驱动电流,并调节流入红色LED芯片的电流量。 如果工作温度超过默认值,触发三通补偿器的输入端截取驱动电流,并产生并输出一个设定电流到红色LED芯片,以补偿由高温引起的红色LED芯片的衰减 。 LED元件在长时间使用后不会改变其强度。

    Multi-segment LED driving circuit
    5.
    发明授权
    Multi-segment LED driving circuit 有权
    多段LED驱动电路

    公开(公告)号:US08901854B1

    公开(公告)日:2014-12-02

    申请号:US13889535

    申请日:2013-05-08

    IPC分类号: H05B33/08

    CPC分类号: H05B33/083

    摘要: Disclosed is a multi-segment LED driving circuit used in an AC operating mode for outputting a drive current to drive a plurality of serially connected LED strings. The LED driving circuit includes at least one detection part, at least one comparison part and at least one adjusting part. The detection part detects an input voltage and an output voltage at both ends of each string and its next string to form a detected value provided for the comparison part to compare the detected value with a reference value to turn on or off the adjusting part so as to control the strings through which the drive current passes and then sequentially drives the strings to emit light. The LED driving circuit can adjust the load of the circuit immediately based on the change of voltage value of the AC power to ensure the stability of the drive current.

    摘要翻译: 公开了一种多段LED驱动电路,其用于AC操作模式,用于输出驱动电流以驱动多个串联LED串。 LED驱动电路包括至少一个检测部,至少一个比较部和至少一个调整部。 检测部分检测每个串的两端的输入电压和输出电压及其下一个串,以形成为比较部分提供的检测值,以将检测值与参考值进行比较,以打开或关闭调节部件,以便 以控制驱动电流通过的串,然后顺序地驱动串来发光。 LED驱动电路可以根据交流电源的电压值的变化立即调整电路的负载,保证驱动电流的稳定。