Buzzer-driving apparatus
    14.
    发明申请
    Buzzer-driving apparatus 失效
    蜂鸣器驱动装置

    公开(公告)号:US20020180593A1

    公开(公告)日:2002-12-05

    申请号:US10128964

    申请日:2002-04-24

    Abstract: A pulse signal, having a buzzer-driving frequency, for driving a buzzer (3) is generated by a free running timer of a timer management section of a microcomputer (1). The timer management section operates independently of software processing of the microcomputer (1). A transistor (2) is turned on and off by the pulse signal having the buzzer-driving frequency. Accordingly, electricity flows through the buzzer (3). The buzzer (3) in turn, generates a sound.

    Abstract translation: 具有蜂鸣器驱动频率的用于驱动蜂鸣器(3)的脉冲信号由微计算机(1)的定时器管理部分的自由运行定时器产生。 定时器管理部分独立于微计算机(1)的软件处理工作。 晶体管(2)由具有蜂鸣器驱动频率的脉冲信号导通和截止。 因此,电流通过蜂鸣器(3)。 蜂鸣器(3)依次产生声音。

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