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    • 17. 发明申请
    • CONTROL CIRCUIT OF LIGHT-EMITTING ELEMENT
    • 发光元件的控制电路
    • US20110260651A1
    • 2011-10-27
    • US13092746
    • 2011-04-22
    • Yoshio FujimuraShinichi YamamotoFeng Xu
    • Yoshio FujimuraShinichi YamamotoFeng Xu
    • H05B37/02
    • H05B33/0809H05B33/0815Y02B20/347
    • A control circuit of a light-emitting element comprises a rectifying unit (30), a switching element (38), a transformer (48) having a first winding (L1) which generates a magnetic field using a current controlled by switching of the switching element (38), a second winding (L2) which is magnetically coupled to the first winding (L1) and which generates a current flowing to an LED (102), and a third winding (L3) which is magnetically coupled to the first winding (L1) and which generates a voltage (Sfbk), and an averaging capacitor (32) which averages a voltage derived by superposing a voltage (Srec) rectified by the rectifying unit (30) and the voltage (Sfbk), and a voltage averaged by the averaging capacitor (32) is applied to the first winding (L1), so that light is emitted from the LED (102).
    • 发光元件的控制电路包括整流单元(30),开关元件(38),具有第一绕组(L1)的变压器(48),该第一绕组(L1)使用通过切换开关控制的电流产生磁场 元件(38),与第一绕组(L1)磁耦合并产生流向LED(102)的电流的第二绕组(L2),以及第三绕组(L3),其被磁耦合到第一绕组 (S1)并产生电压(Sfbk),平均电容器(32)对由整流单元(30)整流的电压(Srec)和电压(Sfbk)进行叠加而得到的电压平均化, 通过平均电容器(32)施加到第一绕组(L1),使得从LED(102)发射光。
    • 19. 发明授权
    • Ultrasonic actuator which acts on a rotor to rotate the rotor
    • 作用于转子以旋转转子的超声波致动器
    • US07772744B2
    • 2010-08-10
    • US12224986
    • 2007-02-28
    • Minoru IshiguroShinichi YamamotoManabu Aoyagi
    • Minoru IshiguroShinichi YamamotoManabu Aoyagi
    • H01L41/08
    • H02N2/103H02N2/003
    • It is an object to provide a small ultrasonic actuator whose voltage control is easy. The ultrasonic actuator acts on a rotatable rotor to rotate the rotor, the ultrasonic actuator includes: a plate vibrator having one end which contacts the rotor, a corner portion bent at a midpoint in the vibrator, and the other end which is fixed; and a piezoelectric device which contacts a part of the vibrator between the one end and the corner portion, and transmits a vibration to the vibrator by vibrating in response to application of an alternating voltage between one of electrodes provided respectively on both surfaces or the plate vibrator serving as the one of the electrodes and the other of the electrodes.
    • 本发明的目的是提供一种电压控制容易的小型超声波致动器。 超声波致动器作用在可旋转的转子上以使转子旋转,超声波致动器包括:一个板振动器,其一端接触转子,一个拐角部分在振动器的中点弯曲,另一端固定; 以及压电装置,其与所述一端和所述角部之间的所述振动器的一部分接触,并且响应于在分别设置在两个表面上的电极之一或所述板振动器上施加交流电压而振动而向所述振动器传递振动 用作电极和另一个电极中的一个。