公开(公告)号：US4967100A

公开(公告)日：1990-10-30

申请号：US286861

申请日：1988-12-20

申请人： Mitsuhiko Okutsu ,  Tadaaki Kariya ,  Kouji Kawamoto ,  Syuzoh Kaneko ,  Yasuhiro Mashiko

发明人： Mitsuhiko Okutsu ,  Tadaaki Kariya ,  Kouji Kawamoto ,  Syuzoh Kaneko ,  Yasuhiro Mashiko

IPC分类号： G09G3/22 ,  G09G3/30 ,  H03K17/567 ,  H03K17/62 ,  H03K17/66

CPC分类号： H03K17/667 ,  H03K17/567 ,  H03K17/6285

摘要： A capacitive load driving apparatus which has a plurality of first switching elements connected between a plurality of parallel loads and a first power source terminal for switching currents which charge the loads. There is furthermore provided a plurality of bipolar transistors connected between connecting points (of the first switching elements and the loads) and a second power source terminal for discharging charges stored in the loads and a plurality of second switching elements connected between a third power source terminal and bases of the bipolar transistor, respectively, for switching base currents supplied from the third power source terminal to the bipolar transistors. In addition, the capacitive load driving apparatus has a logic circuit connected to an input terminal for providing driving signals which turn off selectively one or all of the second switching elements in accordance with a signal from the input terminal, and it has a resistor connected between the third power source terminal and the second switching elements.

摘要翻译： 一种容性负载驱动装置，其具有连接在多个并联负载之间的多个第一开关元件和用于切换对负载充电的电流的第一电源端子。 此外还提供了连接在第一开关元件和负载的连接点之间的多个双极晶体管和用于放电存储在负载中的电荷的第二电源端子以及连接在第三电源端子之间的多个第二开关元件 和双极晶体管的基极，用于将从第三电源端子提供的基极电流切换到双极晶体管。 此外，电容性负载驱动装置具有连接到输入端子的逻辑电路，用于提供根据来自输入端子的信号选择性地关闭第二开关元件中的一个或全部的驱动信号，并且其具有连接在 第三电源端子和第二开关元件。