专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US6003139A Computer system including power supply circuit with controlled output power 失效
标题翻译：计算机系统包括具有受控输出功率的电源电路
公开(公告)号：US6003139A
公开(公告)日：1999-12-14
申请号：US13876
申请日：1998-01-27
申请人： Philip James McKenzie
发明人： Philip James McKenzie
IPC分类号： G05F5/08 , G06F1/26 , G06F1/32
CPC分类号： G06F1/26
摘要： A computer system includes a computer system unit and a power supply circuit. The power supply circuit is coupled to receive input power and generate output power. This circuit includes a circuit to generate a control signal that is related to the power level of the input power. The control signal has a first value relative to the input signal if the input signal exceeds a selected threshold level and the control signal has a second value relative to the input signal if the input signal does not exceed the selective threshold value. The power level of the output power is controlled so that it does not exceed a maximum power level which is based on the level of the control signal.
摘要翻译：计算机系统包括计算机系统单元和电源电路。电源电路被耦合以接收输入功率并产生输出功率。该电路包括用于产生与输入功率的功率电平相关的控制信号的电路。如果输入信号超过所选阈值电平，则控制信号相对于输入信号具有第一值，并且如果输入信号不超过选择性阈值，则控制信号相对于输入信号具有第二值。控制输出功率的功率电平，使其不超过基于控制信号电平的最大功率电平。

2. 发明授权

US5712754A Hot plug protection system 失效
标题翻译：热插拔保护系统
公开(公告)号：US5712754A
公开(公告)日：1998-01-27
申请号：US631963
申请日：1996-04-15
申请人： Chi Kim Sides , Philip James McKenzie , Barry S. Basile
发明人： Chi Kim Sides , Philip James McKenzie , Barry S. Basile
IPC分类号： G06F1/26 , G06F1/30 , G06F3/00 , G06F13/40 , H02H9/00
CPC分类号： G06F13/4081 , H02H9/004
摘要： A protection circuit for a computer system having PCI expansion cards and PCI expansion slots with multiple power rails for supplying power to the PCI expansion cards, the protection circuit including a current monitor that monitors the current levels drawn by the PCI expansion card at each power rail; an inrush current controller for controlling the initial current applied to each of the power rails when an expansion card is initially inserted into an expansion slot; a voltage monitor that monitors the voltage levels applied to selected power rails; and a disconnector for disconnecting the power to the PCI expansion slot when either the current level drawn by the PCI expansion card at any of the power rails goes beyond a selected range or when the voltage levels at any of the selected monitored power rails are below a selected threshold or when commanded by the computer system.
摘要翻译：一种用于具有PCI扩展卡和具有用于向PCI扩展卡供电的多个电源轨的PCI扩展槽的计算机系统的保护电路，该保护电路包括监视由PCI扩展卡在每个电源轨上绘制的当前电平的电流监视器 ; 浪涌电流控制器，用于当扩展卡最初插入到扩展槽中时，控制施加到每个电源轨的初始电流; 一个电压监视器，用于监视施加到所选电源轨的电压电平; 以及用于当PCI扩展卡在任何电源轨下拉出的电流水平超过所选范围时，或者当任何被选择的监视电力轨的电压水平低于一个时，断开与PCI扩展槽的电力的隔离开关选择的阈值或当由计算机系统命令时。

3. 发明授权

US5801522A Power limit circuit for computer system 失效
标题翻译：电脑系统功率限制电路
公开(公告)号：US5801522A
公开(公告)日：1998-09-01
申请号：US720211
申请日：1996-09-26
申请人： Philip James McKenzie
发明人： Philip James McKenzie
IPC分类号： G05F5/08 , G06F1/26
CPC分类号： G06F1/26
摘要： A method for controlling the power level of a computer system or the like provides a dual power range feature which allows a power supply to be used over a wide range of AC input voltages. The power control circuit employs a detector for the RMS voltage of the input power line, and a detector for the AC input current at the power line. These detected levels are applied to a multiplier to provide an indication of power input, multiplier output is compared with a reference to produce a control for the output power of the power supply. The duty cycle of an oscillator for an AC-to-DC conversion for a power factor control circuit within the power supply is the controlled element, using pulse width modulation. A dual power range is provided so that for low AC line voltages, where the AC line current would tend to be high, a lower power limit is in effect, then for higher AC line voltages, where AC line current is proportionally lower for a given power level, a higher power limit is allowed. This is accomplished by a simple and efficient circuit, in an example embodiment; when the RMS voltage of the AC input exceeds a certain level, the values of resistors in a voltage divider within the RMS voltage detector circuit are changed so that a different power limit is provided which is in excess of the first power limit. The switchover from one power limit to another is done by a non-linear switch device such as a diode turning on and adding a resistor in the voltage divider.
摘要翻译：用于控制计算机系统等的功率电平的方法提供双功率范围特征，其允许在宽范围的AC输入电压上使用电源。功率控制电路使用用于输入电力线的RMS电压的检测器和用于电力线上的AC输入电流的检测器。这些检测电平被施加到乘法器以提供功率输入的指示，乘法器输出与参考相比较以产生用于电源的输出功率的控制。用于电源内的功率因数控制电路的AC到DC转换的振荡器的占空比是使用脉宽调制的受控元件。提供双功率范围，使得对于交流线路电流趋于较高的低AC线路电压，实际上功率限制较低，则对于较高的交流线路电压，对于给定的交流线路电流，其中交流线路电流成比例地较低功率级别，允许更高的功率限制。这在一个示例性实施例中通过简单而有效的电路实现; 当AC输入的RMS电压超过一定电平时，RMS电压检测器电路内的分压器中的电阻值被改变，从而提供超过第一功率极限的不同功率限制。从一个功率限制到另一个功率限制的切换是通过非线性开关器件（例如二极管导通）和在分压器中增加一个电阻来完成的。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式