Sampling rate converting method and apparatus
    71.
    发明授权
    Sampling rate converting method and apparatus 失效
    采样率转换方法和装置

    公开(公告)号:US5719571A

    公开(公告)日:1998-02-17

    申请号:US715430

    申请日:1996-09-18

    IPC分类号: H03H17/00 H03H17/06

    CPC分类号: H03H17/0685

    摘要: A sampling rate converting method and apparatus for converting the sampling frequency of a 1-bit digital data obtained by a .SIGMA..DELTA. modulator to 32 kHz, 48 kHz, 96 kHz or 192 kHz without producing jitter. A decimation filter 3 decimates the sampling frequency of 1-bit digital data of 2.8224 MHz supplied from an input terminal 2 by 1/21-tuple decimation. An interpolation filter 4 oversamples the frequency of the output of the decimation filter 3 by quintuple oversampling with an integer ratio of 1:5. A decimation filter 5 decimates the frequency of the output of the interpolation filter 4 by 1/21-tuple decimation with an integer ratio of 21:1.

    摘要翻译: 用于将由SIGMA DELTA调制器获得的1位数字数据的采样频率转换为32kHz,48kHz,96kHz或192kHz而不产生抖动的采样率转换方法和装置。 抽取滤波器3对从输入端子2提供的1 / 212424MHz的1位数字数据的采样频率进行1/2抽取。 内插滤波器4通过五比特过采样以1:5的整数比过滤抽取滤波器3的输出频率。 抽取滤波器5以21:1的整数比抽取内插滤波器4的输出的频率1/2/2元抽取。

    Cash handling machine
    73.
    发明授权
    Cash handling machine 失效
    现金处理机

    公开(公告)号:US4628192A

    公开(公告)日:1986-12-09

    申请号:US797944

    申请日:1985-11-14

    申请人: Tadao Suzuki

    发明人: Tadao Suzuki

    摘要: The cash handling machine with a cash containing device housed within a safe and a receipt printer mounted on the safe comprises a cash carrying device for carrying cash from the cash containing device to an operation panel cash outlet and a receipt carrying device for carrying a printed receipt to an operation panel receipt outlet. Since the receipt carrying device is pivotally supported by the receipt printer at one end thereof and disposed obliquely between the receipt printer and the receipt outlet, it is possible to bring the receipt outlet into close proximity to the cash outlet in the operation panel even where the safe wall is sufficiently thick for crime prevention. Therefore, the user can readily take both the discharged cash and receipt simultaneously. Further, the receipt carrying device can be moved backward for easy access thereto in case of receipt jamming trouble.

    摘要翻译: 具有装在保险箱内的现金收纳装置的现金处理机和安装在保险箱上的收据打印机包括用于从现金收纳装置携带现金到操作面板现金出口的现金携带装置和用于携带打印收据的收据携带装置 到操作面板收据出口。 由于收据承载装置在其一端由收据打印机枢轴支撑并且倾斜地布置在收据打印机和收据出口之间,所以可以使收据出口靠近操作面板中的现金出口,即使在 安全墙足够厚,可以预防犯罪。 因此,用户可以同时容易地同时收取已发放的现金和收据。 此外,收据携带装置可以向后移动,以便在接收到卡纸故障的情况下容易接近。

    Pulse width modulated signal amplifier
    74.
    发明授权
    Pulse width modulated signal amplifier 失效
    脉宽调制信号放大器

    公开(公告)号:US4134076A

    公开(公告)日:1979-01-09

    申请号:US857176

    申请日:1977-12-02

    摘要: A pulse width modulated signal amplifier includes an integrator having a positive or non-inverted input terminal supplied with a modulating signal, such as, an audio signal, and an inverted input terminal supplied with a rectangular wave signal as a carrier, a high gain amplifier receiving the output of the integrator and producing a pulse width modulated signal, a pulse power amplifier receiving the pulse width modulated signal, a low pass filter receiving the output of the pulse power amplifier and producing an amplified demodulated signal corresponding to the original modulating signal and which is supplied to an output terminal, and a negative feedback circuit connected between the output terminal of the pulse power amplifier and the inverted input terminal of the integrator.

    摘要翻译: 脉宽调制信号放大器包括积分器,该积分器具有被提供有诸如音频信号的调制信号的正或非反相输入端,以及提供有矩形波信号作为载波的反相输入端,高增益放大器 接收积分器的输出并产生脉冲宽度调制信号,接收脉宽调制信号的脉冲功率放大器,接收脉冲功率放大器输出的低通滤波器,并产生对应于原始调制信号的放大解调信号;以及 连接在脉冲功率放大器的输出端和积分器的反相输入端之间的负反馈电路。

    Switching regulator with feedback system for regulating output current
    75.
    发明授权
    Switching regulator with feedback system for regulating output current 失效
    具有用于调节输出电流的反馈系统的开关稳压器

    公开(公告)号:US4126891A

    公开(公告)日:1978-11-21

    申请号:US751641

    申请日:1976-12-17

    摘要: A switching regulator includes a chopper circuit and a DC-DC converter. A switching signal for use with the chopper circuit is derived from an inverter portion of the DC-DC converter so as not to use an external pulse oscillator. A DC voltage feeback circuit is provided from the output of the DC-DC converter to the chopper circuit so as to stabilize the DC output signal of the DC-DC converter.

    摘要翻译: 开关调节器包括斩波电路和DC-DC转换器。 与斩波电路一起使用的开关信号从DC-DC转换器的反相器部分导出,以便不使用外部脉冲振荡器。 从DC-DC转换器的输出到斩波电路提供直流电压回馈电路,以稳定DC-DC转换器的直流输出信号。

    Push-pull pulse amplifier having improved turn-on and turn-off times
    76.
    发明授权
    Push-pull pulse amplifier having improved turn-on and turn-off times 失效
    推挽脉冲放大器具有改善的导通和关断时间

    公开(公告)号:US4115740A

    公开(公告)日:1978-09-19

    申请号:US850830

    申请日:1977-11-11

    摘要: A pulse amplifier formed of first and second field effect transistors, each exhibiting an inherent input capacitance at its gate electrode, the field effect transistors being connected in push-pull relation whereby their drain or source electrodes are connected to a common output terminal. First and second resistive circuits are connected in a pulse supply circuit to supply pulse signals to the respective gate electrodes of the field effect transistors. Each of the resistive circuits exhibits a higher resistance when a pulse is supplied therethrough to turn the respective field effect transistor ON and a lower resistance when the pulse is terminated to turn the respective field effect transistor OFF. The higher resistance of the resistive circuit cooperates with the inherent input capacitance of the respective field effect transistor to provide a higher discharge time constant to turn that field effect transistor ON and the lower resistance cooperates with the inherent input capacitance of the field effect transistor to provide a lower charge time constant to turn that field effect transistor OFF, whereby the field effect transistors are not ON concurrently. In a preferred embodiment, the field effect transistors are complementary field effect transistors so that a positive-going pulse turns one of those field effect transistors OFF while turning the other ON, and a negative-going pulse turns the one field effect transistor ON while turning the other OFF.

    摘要翻译: 由第一场效应晶体管和第二场效应晶体管构成的脉冲放大器,每个场效应晶体管在其栅极处呈现固有的输入电容,场效应晶体管以推挽方式连接,由此其漏极或源极连接到公共输出端。 第一和第二电阻电路连接在脉冲供电电路中,以向场效应晶体管的各个栅电极提供脉冲信号。 当脉冲被提供通过其中以使各个场效应晶体管导通时,每个电阻电路呈现较高的电阻,并且当脉冲终止时使电阻电阻降低,以使各个场效应晶体管截止。 电阻电路的较高电阻与相应的场效应晶体管的固有输入电容配合,以提供更高的放电时间常数,以使该场效应晶体管导通,并且较低电阻与场效应晶体管的固有输入电容配合,以提供 较低的充电时间常数使该场效应晶体管截止,由此场效应晶体管不是同时导通。 在优选实施例中,场效应晶体管是互补的场效应晶体管,使得正向脉冲将这些场效应晶体管中的一个截止,同时使另一个导通,而负向脉冲使一个场效应晶体管导通,同时转动 另一个OFF。

    Surge current protection circuit
    78.
    发明授权
    Surge current protection circuit 失效
    浪涌电流保护电路

    公开(公告)号:US4091434A

    公开(公告)日:1978-05-23

    申请号:US731766

    申请日:1976-10-12

    摘要: A surge current protection circuit includes an input terminal supplied with a rectified alternating voltage, an output terminal to be connected to a load, and a semiconductor controlled rectifier having its anode and cathode electrodes connected in series between the input and output terminals. The collector and emitter electrodes of a control transistor are connected between the gate and cathode electrodes of the rectifier. The base-emitter voltage is supplied with any sharp transients, and the transistor becomes conductive before the rectifier if the transients are sharp enough and of high enough amplitude. Conduction of the transistor prevents the semiconductor controlled rectifier from conducting surge currents and protects circuits connected in series with the rectifier.

    摘要翻译: 浪涌电流保护电路包括提供有整流交流电压的输入端子,要连接到负载的输出端子以及其阳极和阴极电极串联连接在输入和输出端子之间的半导体可控整流器。 控制晶体管的集电极和发射极连接在整流器的栅极和阴极之间。 基极 - 发射极电压提供任何尖锐的瞬变,如果瞬变足够锐利且足够高的幅度,晶体管将在整流器之前导通。 晶体管的导通防止半导体可控整流器传导浪涌电流并保护与整流器串联连接的电路。

    Starting circuit for inverter
    79.
    发明授权
    Starting circuit for inverter 失效
    变频器启动电路

    公开(公告)号:US4047089A

    公开(公告)日:1977-09-06

    申请号:US694713

    申请日:1976-06-10

    摘要: A starting circuit for an inverter includes, at least, a control winding provided in connection with a saturable magnetic core of an input transformer of the inverter, a transistor and a capacitor. When a DC voltage source is activated, a discharge current of the capacitor flows through the collector-emitter circuit of the transistor and the control winding so as to start the switching operation of the inverter. A control circuit is provided for detecting a secondary voltage of the inverter so as to cut off the operation of the starting circuit after the inverter starts.

    摘要翻译: 用于逆变器的启动电路至少包括与逆变器的输入变压器的可饱和磁芯,晶体管和电容器相连的设置的控制绕组。 当直流电压源被激活时,电容器的放电电流流过晶体管和控制绕组的集电极 - 发射极电路,以开始逆变器的开关操作。 提供控制电路,用于检测逆变器的次级电压,以便在变频器起动之后切断起动电路的动作。

    Transistor inverter
    80.
    发明授权
    Transistor inverter 失效
    晶体管逆变器

    公开(公告)号:US4031454A

    公开(公告)日:1977-06-21

    申请号:US691827

    申请日:1976-06-01

    CPC分类号: H02M3/3387

    摘要: A transistor inverter includes a pair of switching transistors each having base, emitter and collector electrodes, each of the collector and emitter circuits of which is connected between a DC voltage source through a primary winding of an output transformer, respectively, the secondary winding of which is connected to a rectifying circuit so as to produce a DC output voltage at its output. The transistor inverter also includes an input transformer with a saturable core and voltage feedback and current feedback circuits. The current feedback circuit has another transformer which controls the amount of current feedback, and the winding ratio of the primary and secondary windings is determined in connection with the current amplification factor of said first and second switching transistors in order to improve a switching speed of the switching transistors.

    摘要翻译: 晶体管反相器包括一对开关晶体管,每个开关晶体管具有基极,发射极和集电极,其集电极和发射极各自分别通过输出变压器的初级绕组连接在直流电压源之间,其次级绕组 连接到整流电路,以在其输出端产生直流输出电压。 晶体管反相器还包括具有饱和磁芯和电压反馈和电流反馈电路的输入变压器。 电流反馈电路具有控制电流反馈量的另一个变压器,并且根据所述第一和第二开关晶体管的电流放大系数来确定初级绕组和次级绕组的绕组比,以便提高开关速度 开关晶体管。