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    • 44. 发明授权
    • Overcharge prevention circuit and semiconductor device
    • 过充电防止电路和半导体器件
    • US08988840B2
    • 2015-03-24
    • US13612130
    • 2012-09-12
    • Makoto MitaniKotaro Watanabe
    • Makoto MitaniKotaro Watanabe
    • H02H3/20H02H9/04H02J7/00
    • H02J7/00H02J7/0029H02J2007/0037Y02E10/566
    • Provided is an overcharge prevention circuit for clamping a voltage value of an electric power generation unit in an overcharged state to a constant value, in which the number of elements is small and which does not consume electric power unnecessarily. The overcharge prevention circuit includes: a backflow prevention diode; a clamping transistor having a gate connected to a cathode of the backflow prevention diode, a source connected to an anode thereof, and a drain connected to an overcharge prevention switch. Upon detection of overcharge, a current is discharged via the clamping transistor and the overcharge prevention switch, thereby clamping a potential of the electric power generation unit to around a voltage of an electricity storage unit.
    • 提供了一种过充电防止电路,用于将过充电状态的发电单元的电压值钳位到元件数量少且不消耗电力的恒定值。 过充电防止电路包括:防回流二极管; 钳位晶体管,其具有连接到防逆二极管的阴极的栅极,连接到其阳极的源极和连接到过充电保护开关的漏极。 当检测到过充电时,通过钳位晶体管和过充电保护开关放电,从而将发电单元的电位钳位在蓄电单元的电压附近。
    • 45. 发明授权
    • Oscillation device
    • 振荡装置
    • US08766737B2
    • 2014-07-01
    • US13612217
    • 2012-09-12
    • Masaya MurataKotaro WatanabeMakoto Mitani
    • Masaya MurataKotaro WatanabeMakoto Mitani
    • H03L1/02H03B5/04
    • G05F1/567
    • A constant voltage circuit which can realize a low consumption current, and a crystal oscillation circuit using the constant voltage circuit. The constant voltage circuit is provided with a temperature characteristic regulation element, in order to minimize a difference between a negative slope of a voltage response of a constant voltage to a temperature change and a negative slope of a voltage response of the smallest operation voltage that can oscillate in the crystal oscillation circuit to the temperature change, so that the consumption current of the crystal oscillation circuit is decreased. When the constant current generated by the constant voltage circuit is decreased, the consumption current of the constant voltage circuit is decreased, and the consumption current of the whole oscillation device is decreased.
    • 可以实现低功耗电流的恒压电路和使用恒压电路的晶体振荡电路。 恒压电路设置有温度特性调节元件,以便最小化恒定电压的电压响应的负斜率与温度变化的负斜率与最小工作电压的电压响应的负斜率之间的差异 在晶体振荡电路中振荡到温度变化,使得晶体振荡电路的消耗电流降低。 当由恒压电路产生的恒定电流减小时,恒压电路的消耗电流降低,整个振荡器件的消耗电流降低。