Power supply switching circuit and method
    1.
    发明申请
    Power supply switching circuit and method 失效
    电源开关电路及方法

    公开(公告)号:US20050285190A1

    公开(公告)日:2005-12-29

    申请号:US11143852

    申请日:2005-06-02

    IPC分类号: G06F1/26 H01L29/94 H02J9/06

    CPC分类号: G06F1/266 H02J9/061

    摘要: A power supply switching circuit includes an input terminal (2) for receiving a signal from a motherboard, an output terminal (4) to output a control signal, a first Bipolar Junction Transistor (BJT) (5), and a second BJT (7). A base of the first BJT is connected to the input terminal via a base bleeder circuit. A collector of the first BJT is connected to a stand-by power supply terminal (10) via a collector resistor. A base of the second BJT is connected to the collector of the first BJT. A collector of the second BJT is connected to a system power supply terminal (12) via a collector resistor. The collector of the second BJT is connected to the output terminal. Emitters of the first and second BJTs are grounded.

    摘要翻译: 电源开关电路包括用于接收来自主板的信号的输入端子(2),输出控制信号的输出端子(4),第一双极结晶体管(BJT)(5)和第二BJT(7) )。 第一个BJT的基极通过基极泄放电路连接到输入端。 第一BJT的集电极通过集电极电阻连接到备用电源端子(10)。 第二个BJT的基座连接到第一个BJT的收集器。 第二BJT的集电极通过集电极电阻连接到系统电源端子(12)。 第二BJT的集电极连接到输出端子。 第一和第二BJT的发射器是接地的。

    Power supply switching circuit and method
    2.
    发明授权
    Power supply switching circuit and method 失效
    电源开关电路及方法

    公开(公告)号:US07205808B2

    公开(公告)日:2007-04-17

    申请号:US11143852

    申请日:2005-06-02

    IPC分类号: H03K5/1536 H03K17/13

    CPC分类号: G06F1/266 H02J9/061

    摘要: A power supply switching circuit includes an input terminal (2) for receiving a signal from a motherboard, an output terminal (4) to output a control signal, a first Bipolar Junction Transistor (BJT) (5), and a second BJT (7). A base of the first BJT is connected to the input terminal via a base bleeder circuit. A collector of the first BJT is connected to a stand-by power supply terminal (10) via a collector resistor. A base of the second BJT is connected to the collector of the first BJT. A collector of the second BJT is connected to a system power supply terminal (12) via a collector resistor. The collector of the second BJT is connected to the output terminal. Emitters of the first and second BJTs are grounded.

    摘要翻译: 电源开关电路包括用于接收来自主板的信号的输入端子(2),输出控制信号的输出端子(4),第一双极结晶体管(BJT)(5)和第二BJT(7) )。 第一个BJT的基极通过基极泄放电路连接到输入端。 第一BJT的集电极通过集电极电阻连接到备用电源端子(10)。 第二个BJT的基座连接到第一个BJT的收集器。 第二BJT的集电极通过集电极电阻连接到系统电源端子(12)。 第二BJT的集电极连接到输出端子。 第一和第二BJT的发射器是接地的。

    Polyphase source detecting circuit
    3.
    发明授权
    Polyphase source detecting circuit 失效
    多相源检测电路

    公开(公告)号:US07796048B2

    公开(公告)日:2010-09-14

    申请号:US11957498

    申请日:2007-12-17

    CPC分类号: G01R31/42

    摘要: A polyphase source detecting circuit configured for detecting a polyphase source having at least two phase sources includes at least two sampling circuit and an alarm circuit. Each sampling circuit has a control switch. A control terminal of the control switch of each sampling circuit is connected to one of the phase sources of the polyphase source respectively. The alarm circuit has a first transistor, a first LED, and a second LED. The anodes of the first and second LEDs are connected to a power supply. The cathode of the first LED is connected to the gate of the first transistor and connected to ground via the control switches of the sampling circuits in turn. The cathode of the second LED is connected to the drain of the first transistor. The source of the first transistor grounded.

    摘要翻译: 被配置为检测具有至少两个相位源的多相源的多相源检测电路包括至少两个采样电路和报警电路。 每个采样电路都有一个控制开关。 每个采样电路的控制开关的控制端分别连接到多相源的一个相源。 报警电路具有第一晶体管,第一LED和第二LED。 第一和第二LED的阳极连接到电源。 第一LED的阴极连接到第一晶体管的栅极,并依次通过采样电路的控制开关连接到地。 第二LED的阴极连接到第一晶体管的漏极。 第一个晶体管的源极接地。

    POLYPHASE SOURCE DETECTING CIRCUIT
    4.
    发明申请
    POLYPHASE SOURCE DETECTING CIRCUIT 失效
    多相源检测电路

    公开(公告)号:US20090102673A1

    公开(公告)日:2009-04-23

    申请号:US11957498

    申请日:2007-12-17

    IPC分类号: G08B21/00

    CPC分类号: G01R31/42

    摘要: A polyphase source detecting circuit configured for detecting a polyphase source having at least two phase sources includes at least two sampling circuit and an alarm circuit. Each sampling circuit has a control switch. A control terminal of the control switch of each sampling circuit is connected to one of the phase sources of the polyphase source respectively. The alarm circuit has a first transistor, a first LED, and a second LED. The anodes of the first and second LEDs are connected to a power supply. The cathode of the first LED is connected to the gate of the first transistor and connected to ground via the control switches of the sampling circuits in turn. The cathode of the second LED is connected to the drain of the first transistor. The source of the first transistor grounded.

    摘要翻译: 被配置为检测具有至少两个相位源的多相源的多相源检测电路包括至少两个采样电路和报警电路。 每个采样电路都有一个控制开关。 每个采样电路的控制开关的控制端分别连接到多相源的一个相源。 报警电路具有第一晶体管,第一LED和第二LED。 第一和第二LED的阳极连接到电源。 第一LED的阴极连接到第一晶体管的栅极,并依次通过采样电路的控制开关连接到地。 第二LED的阴极连接到第一晶体管的漏极。 第一个晶体管的源极接地。

    Self-startup circuit for DC fan
    5.
    发明授权
    Self-startup circuit for DC fan 失效
    直流风扇自启动电路

    公开(公告)号:US07205733B2

    公开(公告)日:2007-04-17

    申请号:US11263614

    申请日:2005-10-31

    IPC分类号: H02P1/18

    CPC分类号: H02P1/18 H02P7/2885

    摘要: A self-startup circuit for a DC fan includes a voltage sampling device receiving a first control signal, a comparator, and a self-startup device. The comparator includes two input terminals and an output terminal. One input terminal is connected to an output terminal of the voltage sampling device. The self-startup device has a switching device and a diode connected in parallel. The self-startup device has an input terminal connected to the output terminal of the comparator, and outputs a second control signal for keeping the DC fan rotating even when the first control signal has a very low duty cycle.

    摘要翻译: 用于DC风扇的自启动电路包括接收第一控制信号的电压采样装置,比较器和自启动装置。 比较器包括两个输入端子和一个输出端子。 一个输入端子连接到电压采样装置的输出端子。 自启动装置具有并联连接的开关装置和二极管。 自启动装置具有连接到比较器的输出端子的输入端子,并且即使当第一控制信号具有非常低的占空比时,也输出用于保持直流风扇旋转的第二控制信号。

    Self-startup circuit for DC fan
    6.
    发明申请
    Self-startup circuit for DC fan 失效
    直流风扇自启动电路

    公开(公告)号:US20060091837A1

    公开(公告)日:2006-05-04

    申请号:US11263614

    申请日:2005-10-31

    IPC分类号: H02P1/18

    CPC分类号: H02P1/18 H02P7/2885

    摘要: A self-startup circuit for a DC fan includes a voltage sampling device receiving a first control signal, a comparator, and a self-startup device. The comparator includes two input terminals and an output terminal. One input terminal is connected to an output terminal of the voltage sampling device. The self-startup device has a switching device and a diode connected in parallel. The self-startup device has an input terminal connected to the output terminal of the comparator, and outputs a second control signal for keeping the DC fan rotating even when the first control signal has a very low duty cycle.

    摘要翻译: 用于DC风扇的自启动电路包括接收第一控制信号的电压采样装置,比较器和自启动装置。 比较器包括两个输入端子和一个输出端子。 一个输入端子连接到电压采样装置的输出端子。 自启动装置具有并联连接的开关装置和二极管。 自启动装置具有连接到比较器的输出端子的输入端子,并且即使当第一控制信号具有非常低的占空比时,也输出用于保持直流风扇旋转的第二控制信号。

    Start-up circuit for DC fan
    7.
    发明授权
    Start-up circuit for DC fan 失效
    直流风扇启动电路

    公开(公告)号:US07598690B2

    公开(公告)日:2009-10-06

    申请号:US11247343

    申请日:2005-10-11

    IPC分类号: H02P25/08

    CPC分类号: H02P7/288 H02P1/18

    摘要: A start-up circuit which decreases a start-up current and stabilizes running of a DC fan. The start-up circuit includes a digital-analog converter for convert a digital control signal from a control chip to an analog control signal, a voltage sampling device connected to an output terminal of the digital-analog converter, a comparator, a switching device for controlling start-up of the DC fan, and a feedback device adjusting current passing through the switching device. The comparator includes two input terminals and an output terminal. One input terminal is connected to an output terminal of the voltage sampling device. The switching device is connected to the output terminal of the comparator. An output signal of the switching device is inputted to the other input terminal of the comparator via the feedback device.

    摘要翻译: 一种降低启动电流并稳定直流风扇运行的启动电路。 启动电路包括用于将来自控制芯片的数字控制信号转换为模拟控制信号的数模转换器,连接到数模转换器的输出端的电压采样装置,比较器,用于 控制DC风扇的启动,以及调整通过开关装置的电流的反馈装置。 比较器包括两个输入端子和一个输出端子。 一个输入端子连接到电压采样装置的输出端子。 开关器件连接到比较器的输出端。 开关装置的输出信号通过反馈装置输入到比较器的另一个输入端。

    Start-up circuit for DC fan
    8.
    发明申请

    公开(公告)号:US20060076912A1

    公开(公告)日:2006-04-13

    申请号:US11247343

    申请日:2005-10-11

    IPC分类号: H02P1/18

    CPC分类号: H02P7/288 H02P1/18

    摘要: A start-up circuit which decreases a start-up current and stabilizes running of a DC fan. The start-up circuit includes a digital-analog converter for convert a digital control signal from a control chip to an analog control signal, a voltage sampling device connected to an output terminal of the digital-analog converter, a comparator, a switching device for controlling start-up of the DC fan, and a feedback device adjusting current passing through the switching device. The comparator includes two input terminals and an output terminal. One input terminal is connected to an output terminal of the voltage sampling device. The switching device is connected to the output terminal of the comparator. An output signal of the switching device is inputted to the other input terminal of the comparator via the feedback device.

    Memory detecting circuit
    9.
    发明授权
    Memory detecting circuit 失效
    存储器检测电路

    公开(公告)号:US07715266B2

    公开(公告)日:2010-05-11

    申请号:US12202335

    申请日:2008-09-01

    IPC分类号: G11C7/00

    CPC分类号: G11C5/04 G11C5/143

    摘要: A memory detecting circuit includes five switch elements and two indication devices. A first switch element is connected to a standby power, and also connected to memory sockets of a first channel to receive a first memory detecting signal. A second switch element is connected to the first switch element and the standby power. A third switch element is connected to the second switch element and the standby power, and also connected to memory sockets of a second channel to receive a second memory detecting signal. A fourth switch element is connected to the third switch element and the standby power. A fifth switch element is connected to the fourth switch element and the standby power. When there are memories installed into the memory sockets of the first channel and the second channel, the second indication device indicates that the memories run in a dual channel mode.

    摘要翻译: 存储器检测电路包括五个开关元件和两个指示装置。 第一开关元件连接到备用电源,并且还连接到第一通道的存储器插槽以接收第一存储器检测信号。 第二开关元件连接到第一开关元件和待机电源。 第三开关元件连接到第二开关元件和备用电源,并且还连接到第二通道的存储器插槽以接收第二存储器检测信号。 第四开关元件连接到第三开关元件和待机电源。 第五开关元件连接到第四开关元件和待机电源。 当存储器安装在第一通道和第二通道的存储器插槽中时,第二指示装置指示存储器以双通道模式运行。

    Power-on circuit for computer
    10.
    发明授权
    Power-on circuit for computer 失效
    电脑上电电路

    公开(公告)号:US07683686B2

    公开(公告)日:2010-03-23

    申请号:US12189103

    申请日:2008-08-08

    IPC分类号: G06F1/00

    CPC分类号: G06F1/20 G06F1/26

    摘要: A power-on circuit of a computer includes a heat sink, an SIO chip, a connector, a first electric switch, a second electric switch, and a third electric switch. When the heat sink is installed properly, the heat sink is grounded, and the first electric switch is turned off. After a power-on button is pressed down, a power supply on pin of the SIO chip sends a low level signal to turn off the second electric switch, the third electric switch is turned on, a power supply on pin of the connector is at a low level, and the computer is powered on. When the heat sink is installed improperly, the heat sink is not grounded, the first electric switch is turned on, the third electric switch is turned off, the power supply on pin of the connector is at a high level, and the computer cannot be powered on.

    摘要翻译: 计算机的通电电路包括散热器,SIO芯片,连接器,第一电开关,第二电开关和第三电开关。 当散热器安装正确时,散热器接地,第一个电开关关闭。 按下电源按钮后,SIO芯片的引脚电源发送低电平信号关闭第二个电开关,第三个电气开关打开,连接器引脚上的电源处于 电平低,电脑开机。 当散热器安装不正确时,散热器不接地,第一个电开关打开,第三个电开关关闭,连接器引脚电源处于高电平,电脑不能 打开电源