公开(公告)号：US4829289A

公开(公告)日：1989-05-09

申请号：US15474

申请日：1987-02-17

申请人： M. Raymond Kallman ,  Lawrence J. Mione ,  Peter Sabol

发明人： M. Raymond Kallman ,  Lawrence J. Mione ,  Peter Sabol

IPC分类号： G01R31/02

CPC分类号： G01R31/024 ,  G01R31/022

摘要： Electrical monitoring circuitry simultaneously and continuously tests a three-wire ground-type AC outlet for proper line voltage, polarity of the wiring and external ground resistance. The circuitry includes a single indicating lamp, preferably a light-emitting diode, which illuminates only when the proper conditions tested for exist at the outlet. For optimum convenience, the circuitry is incorporated in a male/female outlet adaptor which, in use, is plugged into the wall outlet to be tested, thereby to establish via the phase, neutral and ground prongs of the adaptor the necessary test connections of the circuitry to the wall outlet. The adaptor includes one or more jack receptacles internally connected to the adaptor ground prong for receiving static charges from external equipment and draining same to the building ground when the light-emitting diode illuminates.

摘要翻译： 电气监控电路同时并连续测试三线式接地型交流电源插座，以确保线路电压，接线极性和外部接地电阻。 该电路包括单个指示灯，优选地是发光二极管，其仅在在出口处存在的适当条件下照亮。 为了最佳的便利，电路被并入一个公/母插座适配器中，该适配器在使用中插入待测试的墙壁插座中，从而通过适配器的相位，中性线和接地插脚来建立必要的测试连接 电路到墙壁插座。 适配器包括内部连接到适配器接地插脚的一个或多个插座，用于从外部设备接收静电，并在发光二极管点亮时将其排入建筑物地面。

公开(公告)号：US4675537A

公开(公告)日：1987-06-23

申请号：US718663

申请日：1985-04-01

申请人： Lawrence J. Mione

发明人： Lawrence J. Mione

IPC分类号： H01H47/00 ,  H01H47/18 ,  H01H47/32

CPC分类号： H01H47/18 ,  H01H47/001 ,  G06F2200/261 ,  Y02B60/1296 ,  Y10T307/461 ,  Y10T307/74 ,  Y10T307/826 ,  Y10T307/858

摘要： A switching control circuit has first and second output terminals, the first output terminal being connected by way of a control resistor to one of a pair of input terminals which, in use of the circuit are connected to an electrical power source, the second output terminal being connected to the other input terminal. A sensing and delay portion of the circuit is connected across the resistor and, in response to current flowing through the resistor when the power switch of a first electrical device, such as a disc drive, connected to the input terminals is initially turned on, energizes a relay after a predetermined time delay elapses from the time that the resistor current reaches a given threshold value, the energized relay serving to connect one or more pairs of other output terminals of the circuit across the pair of input terminals, so that source power will then be supplied via the relay to the other output terminal pairs and to any other electrical devices, such as a monitor, printed and computer, whose power input terminals are respectively connected thereto. Following turn-off of the power switch, the same circuit portion deenergizes the relay after a second predetermined time delay elapses from the time that resistor current diminishes to a second given threshold value, so that source power to the other electrical devices will cease. Use of a high gain amplifier at the input of the sensing and delay portion of the circuit sharply reduces the power dissipation required of the resistor for any given threshold value of current therethrough, thus providing consequent cool operation and avoiding fuse or other line protection.

摘要翻译： 开关控制电路具有第一和第二输出端子，第一输出端子通过控制电阻器连接到一对输入端子中的一个，在使用该电路的电源连接到电源时，第二输出端子 连接到另一输入端。 电路的感测和延迟部分跨过电阻器连接，并且当连接到输入端子的诸如盘驱动器的第一电气设备的电源开关最初接通时，响应于电流流过电阻器，激励 在从电阻器电流达到给定阈值的时间起经过预定​​时间延迟之后，继电器用于连接该对输入端子上的电路的一对或多对其它输出端子，从而源电源 然后通过继电器提供给其他输出端子对以及电力输入端子分别连接到其上的任何其他电气设备，例如监视器，打印机和计算机。 在关闭电源开关之后，相同的电路部分在从电阻器电流减小到第二给定阈值的时间经过了第二预定时间延迟之后使继电器断电，从而使其他电气设备的电源停止。 在电路的感测和延迟部分的输入端使用高增益放大器大大降低了电阻器对于任何给定的电流阈值所需的功耗，从而提供了冷却操作，避免了熔断器或其他线路保护。