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    • 66. 发明授权
    • Delay circuit
    • 延时电路
    • US4539712A
    • 1985-09-03
    • US187842
    • 1979-09-24
    • Tatsuo Ito
    • Tatsuo Ito
    • H03J5/00H03J7/26H03J7/28H03K5/135H03K17/28H04B1/16H04B1/26
    • H03J7/26H03K5/135
    • A delay circuit is disclosed having (32, 34), a flip-flop circuit (36), and circuits (30, 40) for maintaining reset states during the presence of a first signal (Xo, Yo) and a gate circuit (38) inputted with a second signal (Sd) and controlled to open and close by the output from the flip-flop circuit, and capable of obtaining a relatively long time of delay from the end of the first signal to the interruption of the output of the second signal, with ease in a digital manner even if produced as an integrated circuit. The delay circuit is suitable for use with the channel selection circuit in electronic tuning radio receivers.
    • PCT No.PCT / JP79 / 00023 Sec。 371日期1979年9月24日 102(e)1979年9月24日PCT提交1979年1月30日PCT公布。 公开号WO79 / 00564 公开了一种具有(32,34),触发器电路(36)和用于在存在第一信号(Xo,Yo)期间保持复位状态的电路(30,40)的延迟电路 )和输入了第二信号(Sd)的门电路(38),并被触发器电路的输出控制为打开和关闭,并且能够从第一信号的结束获得相对长的延迟时间 第二信号的输出的中断,即使作为集成电路生成,也以数字方式容易地进行。 延迟电路适用于电子调谐无线电接收机中的信道选择电路。
    • 70. 发明授权
    • Motor drive circuit
    • 电机驱动电路
    • US08598824B2
    • 2013-12-03
    • US13191972
    • 2011-07-27
    • Tatsuo ItoYuji Uchiyama
    • Tatsuo ItoYuji Uchiyama
    • H02P7/00H02K17/32
    • H02P7/285
    • A motor drive circuit includes: a drive circuit configured to drive a motor whose coil current decreases with increase in counter electromotive voltage of a motor coil; a detection circuit configured to detect whether or not a current value of the coil current is greater than a predetermined value; a first control circuit configured to control the drive circuit so that the current value of the coil current becomes smaller than or equal to the predetermined value, when it is detected that the current value of the coil current is greater than the predetermined value; and a second control circuit configured to control the first control circuit so that the first control circuit does not control the drive circuit based on a detection result of the detection circuit until a predetermined time has elapsed from a start of supply of the coil current.
    • 电动机驱动电路包括:驱动电路,被配置为驱动线圈电流随着电动机线圈的反电动势电压的增加而减小的电动机; 检测电路,被配置为检测线圈电流的当前值是否大于预定值; 第一控制电路,其被配置为当检测到所述线圈电流的电流值大于所述预定值时,控制所述驱动电路使得所述线圈电流的电流值变得小于或等于所述预定值; 以及第二控制电路,被配置为控制所述第一控制电路,使得所述第一控制电路在从所述线圈电流的供应开始经过预定时间之后,基于所述检测电路的检测结果来控制所述驱动电路。