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公开(公告)号：US4694194A
公开(公告)日：1987-09-15
申请号：US794920
申请日：1985-11-04
CPC分类号： H02M7/53803 , H02J9/061 , Y10T307/615 , Y10T307/62 , Y10T307/625
摘要： A pulsed power supply having a filter output and a battery backup includes electronic apparatus to sense when the AC source is failing. When the pulsed supply output has the same pulses as that which would be produced by the battery, the supply switches to battery backup mode. As the AC source returns, the supply switches to AC supply mode when the AC is at a level where the pulses produced by the supply would be the same as are actually being produced by the battery backup.
摘要翻译： 具有滤波器输出和电池备用的脉冲电源包括用于感测何时AC电源发生故障的电子设备。 当脉冲电源输出与电池产生的脉冲相同时，电源切换到电池备份模式。 当交流电源返回时，当电源处于电源产生的脉冲与实际由电池备份产生的脉冲相同时，电源切换到交流电源模式。
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2.发明授权Power supply including circuit board with a conductive bracket for electrical ground 有权电源包括电路板，带有电气接地的导电支架公开(公告)号：US06347043B1
公开(公告)日：2002-02-12
申请号：US09551926
申请日：2000-04-19
IPC分类号： H05K700
CPC分类号： H05K9/0064
摘要： A system (e.g., a power supply) is presented which allows a user to electrically couple a common ground electrical potential of a circuit (e.g., a power supply circuit return) to, or electrically isolate the common ground electrical potential from, an earth grounded chassis, without having to open the chassis. The system may include a metal bolt and nut, wherein the nut is coupled to an electrically conductive bracket. The bracket is mounted upon a printed circuit board and electrically coupled to the common ground electrical potential. When an insulating bushing is installed in a hole in the chassis adjacent to the bracket, and a threaded shaft of the bolt extends through aligned holes in the insulating bushing, an insulating member positioned between the bracket and the chassis, and the bracket, and the threaded shaft engages the nut, the bolt holds the insulating bushing in place, and the bracket is electrically isolated from the chassis. When the insulating bushing is replaced with a conductive washer, the bolt and the conductive washer form a conductive electrical path between the bracket and the chassis. Components of the described system may be employed in systems having multiple cabinets (or complex cabinet systems) to achieve a single point of grounding. System components may also be employed to selectively isolate or couple a power supply return to a chassis ground in devices other than power supplies.
摘要翻译： 提出了一种系统（例如电源），其允许用户将电路的公共地电位（例如，电源电路返回）电耦合到或将电接地电位与地电接地 机箱，无需打开机箱。 该系统可以包括金属螺栓和螺母，其中螺母联接到导电支架。 支架安装在印刷电路板上并电耦合到公共地电位。 当绝缘衬套安装在靠近支架的底盘的孔中，并且螺栓的螺纹轴穿过绝缘衬套中的对准孔时，定位在支架和底盘之间的绝缘构件以及托架 螺纹轴接合螺母，螺栓将绝缘套管固定就位，支架与机箱电隔离。 当绝缘衬套被导电垫圈更换时，螺栓和导电垫圈在支架和底盘之间形成导电电路。 所描述的系统的组件可以用于具有多个机柜（或复杂的机柜系统）以实现单点接地的系统中。 还可以采用系统组件来选择性地隔离或耦合除了电源之外的设备中的电源返回到机箱接地。
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公开(公告)号：US4276590A
公开(公告)日：1981-06-30
申请号：US35370
申请日：1979-04-30
CPC分类号： H02J3/46 , H02J1/102 , H02J5/005 , H02M3/3376 , Y10T307/707
摘要： A current sharing modular power system including, in each module, an inverter circuit and means to determine the current to a common load from the module. A difference circuit is provided to determine the difference between the module supplied current and the average of the current supplied by the other modules. The difference is then utilized to vary the pulse width of the inverter output so that the pulses are wider if the current from the module is smaller than the current supplied by the other modules and the pulses are thinner if the current from the module is larger than the average current supplied by the other modules. The system also includes a voltage sense circuit to adjust the module operation to maintain a constant voltage output.
摘要翻译： 一种电流共享模块化电力系统，包括在每个模块中的逆变器电路和用于确定来自模块的公共负载的电流的装置。 提供差分电路以确定模块供电电流与其他模块提供的电流的平均值之间的差异。 然后利用该差异来改变逆变器输出的脉冲宽度，使得如果来自模块的电流小于由其他模块提供的电流，则脉冲更宽，并且如果来自模块的电流大于脉冲，则脉冲更薄 其他模块提供的平均电流。 该系统还包括一个电压检测电路，用于调节模块运行以保持恒定的电压输出。
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