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    • 4. 发明申请
    • Non-flashing brightness adjusting device for non-resistive light-emitting load
    • 非闪烁亮度调节装置,用于非阻燃发光负载
    • US20100253235A1
    • 2010-10-07
    • US12454088
    • 2009-05-12
    • Tsung-Ein Tsai
    • Tsung-Ein Tsai
    • H05B41/36
    • H05B33/0815
    • A non-flashing brightness adjusting device for a non-resistive light-emitting load has a brightness adjuster and a conductive current sustainer. The brightness adjuster has an AC silicon-controlled rectifier (SCR) and an adjustable trigger unit. By adjusting the adjustable trigger unit and setting a trigger angle of the TRIAC, a total output current of the brightness adjuster is adjusted. The conductive current sustainer is connected to the output terminal of the brightness adjuster for a non-resistive light-emitting load to connect. When the trigger angle of the TRIAC is greater than 90 degrees, the conductive current sustainer keeps the current flowing through the anode and cathode of the TRIAC not lower than its threshold current to maintain the conduction of the TRIAC. Therefore, the non-resistive light-emitting load keeps receiving the required working power and does not flash.
    • 用于非阻燃发光负载的非闪光亮度调节装置具有亮度调节器和导电电流保持器。 亮度调节器具有AC可控硅整流器(SCR)和可调触发单元。 通过调整可调触发单元并设置TRIAC的触发角度,调节亮度调节器的总输出电流。 导电电流保持器连接到亮度调节器的输出端,用于连接非阻性发光负载。 当TRIAC的触发角大于90度时,导电电流保持器保持流过TRIAC的阳极和阴极的电流不低于其阈值电流,以保持TRIAC的导通。 因此,非阻性发光负载不断接收所需的工作电力,不会闪烁。
    • 10. 发明申请
    • AC-TO-DC POWER SUPPLY CIRCUIT
    • 交流对直流电源电路
    • US20100238691A1
    • 2010-09-23
    • US12496628
    • 2009-07-01
    • Tsung-Ein Tsai
    • Tsung-Ein Tsai
    • H02M7/06
    • H02M7/103
    • An AC-to-DC power supply circuit has an AC capacitor, a half-wave rectifier, and a filter capacitor. Through the AC capacitor, the half-wave rectifier forms a power supply circuit with an AC power supply for converting AC power to half-wave DC power. The filer circuit further converts the half-wave DC power into low-voltage DC power. The AC-to-DC power supply circuit adjusts the ratio of the AC capacitor and the filter capacitor so that the capacitance ratio matches with the voltage ratio of the half-wave DC power and the lower-voltage DC power. As a consequence, the AC-to-DC power supply circuit does not need to use a large-size transformer and can still effectively convert AC power to low-voltage DC power. This can largely reduce the manufacturing cost.
    • AC-DC电源电路具有AC电容器,半波整流器和滤波电容器。 通过交流电容器,半波整流器形成具有用于将AC电力转换成半波直流电的交流电源的电源电路。 滤波电路还将半波直流功率转换为低压直流电力。 交流 - 直流电源电路调节交流电容器和滤波电容器的比例,使得电容比与半波直流电力和低压直流电力的电压比匹配。 因此,AC到DC电源电路不需要使用大型变压器,并且仍然可以将AC电力有效地转换为低压DC电力。 这可以大大降低制造成本。