Direct current power circuit
    2.
    发明授权
    Direct current power circuit 失效
    直流电源电路

    公开(公告)号:US4442397A

    公开(公告)日:1984-04-10

    申请号:US342669

    申请日:1982-01-25

    CPC分类号: G05F1/468

    摘要: A DC power circuit comprises a first control means which is provided between a DC power source and a pair of output terminals for controlling voltages as well as currents supplied to a load from the DC power source. An output current detector detects the output current from the DC power source, and provides a first control potential proportional to the detected current. On the other hand, an output voltage detector is coupled between the pair of output terminals for detecting the voltage applied to the load, and provides a second control potential proportional to the detected voltage. A second control means selectively assumes one of two stable states in response to external control. A third control means receives the first and second control potentials, and responds to the state of the second control means for controlling the first control means based on the received two control potentials.

    摘要翻译: 直流电源电路包括第一控制装置,其设置在DC电源和一对输出端子之间,用于控制电压以及从DC电源提供给负载的电流。 输出电流检测器检测来自直流电源的输出电流,并提供与检测到的电流成比例的第一控制电位。 另一方面,输出电压检测器耦合在该对输出端子之间,用于检测施加到负载的电压,并提供与检测到的电压成比例的第二控制电位。 第二控制装置选择性地假设响应于外部控制的两个稳定状态之一。 第三控制装置接收第一和第二控制电位,并且响应于第二控制装置的状态,用于基于所接收的两个控制电位来控制第一控制装置。

    Time base correction apparatus
    3.
    发明授权
    Time base correction apparatus 失效
    时基校正装置

    公开(公告)号:US5142377A

    公开(公告)日:1992-08-25

    申请号:US288825

    申请日:1988-12-23

    IPC分类号: H04N9/79 H04N9/88 H04N9/896

    CPC分类号: H04N9/88 H04N9/7904 H04N9/896

    摘要: A time base correction apparatus includes a feedback loop for performing time base correction of an input signal by detecting a time base error component of the input signal and a filter having an amplitude characteristic approximating an open loop characteristic of the feedback loop for receiving the time base error component. The input signal whose time base error is corrected by the feedback loop is treated by time base correction by a feed forward operation using an output signal of the filter. With this feature, a time base error which was not removed by the feedback loop is further corrected, and an effective time base correction is performed also for high frequencies.

    摘要翻译: 时基校正装置包括用于通过检测输入信号的时基误差分量来执行输入信号的时基校正的反馈回路和具有近似反馈回路的开环特性的幅度特性的滤波器,用于接收时基 错误组件。 通过反馈回路修正时基误差的输入信号,通过使用滤波器的输出信号的前馈运算进行时基校正。 利用该特征,进一步校正未被反馈环路去除的时基误差,并且对于高频也执行有效的时基校正。

    Switching power source with inrush current limiting circuit
    4.
    发明授权
    Switching power source with inrush current limiting circuit 失效
    具有浪涌电流限制电路的开关电源

    公开(公告)号:US5032968A

    公开(公告)日:1991-07-16

    申请号:US496298

    申请日:1990-03-20

    CPC分类号: H02M3/335

    摘要: A switching power source having a rectifier circuit and smoothing capacitor for obtaining a d.c. power from an a.c. input, an oscillator circuit constructed of a serial circuit of a primary winding of a power transformer and a switching element for intermittently turning on and off the d.c. power, the power transformer having another winding of the power transformer for detecting the oscillation state of the oscillator circuit, and a rush current preventing circuit constructed of a parallel circuit of a resistor and a thyristor for turning on the thyristor upon reception of a signal from another winding, the rush current preventing circuit being connected at the input side of the rectifier circuit or between the output side of the rectifier circuit and the smoothing capacitor, the switching power source comprising a detector circuit for generating a signal when the interception period of the a.c. input exceeds a first setting time; and an oscillation stopping circuit for stopping the operation of the oscillator circuit for a second setting time in response to the signal from the detector circuit, and when the a.c. input is supplied at the time other than while the operation of the oscillator circuit is being stopped for the second setting time in response to the signal from the detector circuit, directly starting the operation of the oscillator circuit after a lapse of at least the second setting time after the time when the a.c. input was supplied.

    摘要翻译: 一种具有整流电路和平滑电容器的开关电源,用于获得直流 来自a.c.的权力 输入,由电力变压器的初级绕组的串联电路构成的振荡器电路和用于间歇地打开和关闭直流电的开关元件。 电力变压器具有用于检测振荡器电路的振荡状态的电力变压器的另一个绕组,以及由电阻器和晶闸管的并联电路构成的冲击电流防止电路,用于在接收到来自 另一绕组,所述冲击电流防止电路连接在所述整流电路的输入侧或所述整流电路的输出侧与所述平滑电容器之间,所述开关电源包括检测器电路,所述检测器电路在所述截止期间产生信号 ac 输入超过第一设定时间; 以及振荡停止电路,用于响应于来自检测器电路的信号而停止振荡器电路的操作第二设定时间,以及当a.c. 响应于来自检测器电路的信号,在除了振荡器电路的操作停止第二设定时间之外的时间提供输入,直到经过至少第二设置之后开始振荡器电路的操作 时间之后的时间 提供输入。

    Battery charging device
    5.
    发明授权
    Battery charging device 失效
    电池充电装置

    公开(公告)号:US4680528A

    公开(公告)日:1987-07-14

    申请号:US835935

    申请日:1986-03-04

    IPC分类号: H02J7/04 H02J7/00

    CPC分类号: H02J7/0024 Y10S320/12

    摘要: A battery charging device which is so designed that whether or not the battery is connected in position can be detected by utilizing a current detecting circuit instead of a mechanically-structured component, such as a switch.

    摘要翻译: 可以通过利用电流检测电路来代替诸如开关的机械结构的部件来检测电池充电装置,以使得电池是否连接在位。