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    • 1. 发明授权
    • Charging circuit
    • 充电电路
    • US06853219B2
    • 2005-02-08
    • US10467453
    • 2002-12-10
    • Katsuyoshi AiharaTakaaki NozakiRyoji Iwakura
    • Katsuyoshi AiharaTakaaki NozakiRyoji Iwakura
    • G04C10/00H02J7/35H03K5/153H02J1/00
    • H02J7/35G04C10/00Y02E10/566
    • Charging a storage cell requires the electromotive force exerted at a photogenerating cell in addition to the voltage equal to or higher than the forward on voltage developed at an backflow preventing diode. Therefore, the charging is inefficient. Moreover, the area of the backflow preventing diode must be large in consideration for a current supply from the photogenerating cell at a high intensity of illumination.A charging circuit, constructed using a differential amplifier, which has a power supply therefor separated from another power supply, is used as a direction-of-current detecting circuit that detects the direction of current from a voltage difference between two different power supplies. Consequently, a switch is logically turned on or off depending on whether charging or non-charging is under way. Thus, on voltage to be developed during charging is lowered. Moreover, the size or area of a transistor that acts as a logical circuit is made smaller than that of the backflow preventing diode. Furthermore, the energy of a storage cell included in the charging circuit is hardly consumed in any states.
    • 对存储单元进行充电除了在防逆流二极管上形成的正向电压以外,还需要施加在光生电池上的电动势。 因此,充电效率低下。 此外,考虑到来自光生成单元的高照度强度的电流供应,防回流二极管的面积必须大。1,一种使用差分放大器构成的充电电路,其具有与另一个电源分离的电源 被用作从两个不同电源之间的电压差检测电流方向的电流检测电路。 因此,根据是充电还是不充电,逻辑上开关断开关。 因此,在充电期间要开发的电压降低。 此外,作为逻辑电路的晶体管的尺寸或面积小于防回流二极管的尺寸或面积。 此外,包括在充电电路中的存储单元的能量在任何状态下几乎都不消耗。
    • 2. 发明授权
    • Crystal oscillator circuit using CMOSFETs
    • 使用CMOSFET的晶体振荡器电路
    • US06727769B2
    • 2004-04-27
    • US10157999
    • 2002-05-31
    • Katsuyoshi AiharaRyoji IwakuraTakakazu YanoYukio OtakaShinichi Komine
    • Katsuyoshi AiharaRyoji IwakuraTakakazu YanoYukio OtakaShinichi Komine
    • H03B532
    • H03B5/364H03B5/06
    • A crystal oscillator circuit using CMOSFETs including an oscillator circuit that is constructed of a resonating section and an amplifying section having a CMOSFET, a reference current source circuit for generating a reference current which determines a bias current of the amplifying section, and a control signal generator circuit for controlling the reference current source circuit to make a bias current larger than that in the oscillation status when the oscillator circuit is in the non-oscillation status. As a result, the reference current source circuit constant-current biases the DC bias of the amplifying section without depending on the source voltage. Therefore, it can lower the driving source voltage of the oscillator circuit. Further, only the bias current of the amplifying section is increased during the oscillation starting period of the oscillator circuit, so that the oscillator circuit can provide a stable oscillation with low power, without variations in the source voltage.
    • 一种使用CMOSFET的晶体振荡器电路,包括由谐振部分和具有CMOSFET的放大部分构成的振荡器电路,用于产生确定放大部分的偏置电流的参考电流的参考电流源电路,以及控制信号发生器 用于控制参考电流源电路以在振荡器电路处于非振荡状态时使偏置电流大于振荡状态时的偏置电流。 因此,参考电流源电路恒流偏置放大部分的直流偏压而不依赖于源极电压。 因此,可以降低振荡电路的驱动源电压。 此外,在振荡电路的振荡开始期间,只有放大部分的偏置电流增加,使得振荡器电路能够以低功率提供稳定的振荡,而不会使源极电压发生变化。