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公开(公告)号：US4617604A
公开(公告)日：1986-10-14
申请号：US689358
申请日：1985-01-07
申请人： Yoh Narimatsu , Minoru Niizaki
发明人： Yoh Narimatsu , Minoru Niizaki
摘要： A method which prolongs the lifetime of relays and to prevents degraded performance of relays due to oxidized film on relay contacts is presented. The method essentially comprises the alternation of relay switch operation in dry switching mode with operation in wet switching mode. The frequency and duration of operation in wet switching mode is dependent on the characteristics (e.g. construction or materials, etc.) of the relays in use.
摘要翻译： 提出了一种延长继电器使用寿命并防止由于继电器触点上的氧化膜引起的继电器性能下降的方法。 该方法基本上包括在湿式切换模式下以干式切换模式进行的继电器开关操作的交替。 湿切换模式下的运行频率和持续时间取决于所使用的继电器的特性（例如结构或材料等）。
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公开(公告)号：US4250531A
公开(公告)日：1981-02-10
申请号：US71107
申请日：1979-08-30
申请人： Walter C. Ahrens
发明人： Walter C. Ahrens
CPC分类号： H01H9/547 , H02H7/222 , H01H1/605 , Y10T307/918
摘要： A switch-arc preventing continuous current circuit for protecting pulsing contact telephone exchange switches, the circuit having a first transistor in circuit with and controlled by a control transistor, the power electrodes of the first transistor being disposed in circuit between an inductive coil of a stepping solenoid and a protected switch, a bias voltage source connected to a terminal of the protected switch by a blocking diode and a pair of resistors in series, and a metal oxide varistor in shunt across the power electrodes of the first transistor.
摘要翻译： 一种用于保护脉冲接触式电话交换开关的开关电弧防止连续电流电路，该电路具有电路中由控制晶体管控制的第一晶体管，第一晶体管的功率电极设置在步进电感线圈之间的电路中 螺线管和受保护的开关，通过阻塞二极管和串联的一对电阻器连接到受保护的开关的端子的偏压电源，以及跨越第一晶体管的功率电极并联的金属氧化物变阻器。
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公开(公告)号：US4134026A
公开(公告)日：1979-01-09
申请号：US804343
申请日：1977-06-07
申请人： Kiyoshi Sone , Ichiro Yoshihara
发明人： Kiyoshi Sone , Ichiro Yoshihara
CPC分类号： G01D5/24476 , H01H1/605 , Y10T307/904 , Y10T307/924
摘要： Two reed switches are alternately closed by a magnet rotating with a shaft of a water meter or the like which is to be read remotely. A capacitor discharges through the reed switches when the same are closed, increasing the switch current without increasing the external power source current, thereby producing temporary partial fusion of the switch contacts and maximum contact effectiveness. A low-pass filter and a snap action circuit such as a Schmitt trigger are connected to the switches to eliminate the effects of contact bouncing and noise signals from the output of the circuit.
摘要翻译： 两个簧片开关由与远程读取的水表等的轴旋转的磁体交替关闭。 当相同的闭合时，电容器通过舌簧开关放电，增加开关电流而不增加外部电源电流，从而产生开关触点的临时部分熔合和最大的接触有效性。 低通滤波器和诸如施密特触发器的快速动作电路连接到开关，以消除接触弹跳和来自电路输出的噪声信号的影响。
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公开(公告)号：US3794850A
公开(公告)日：1974-02-26
申请号：US3794850D
申请日：1973-03-22
发明人： HIROSE Y
CPC分类号： H01H1/605 , Y10T307/924
摘要： The so-called ''''coherer effect'''' is utilized for reconditioning the touching faces of a movable contact and a fixed break contact of each of several selector switches in a cascade connection. Connected in series in a closed circuit formed by the movable contacts and the fixed break contacts of the selector switches is power supply means such that each time the movable contact of any of the selector switches is returned to the break contact thereof from the corresponding make contact, the insulating oxide films or the like which may have been formed on the touching faces of the contacts are electrically ruptured by a sufficiently high voltage delivered from the power supply means.
摘要翻译： 所谓的“凝聚效应”用于重新调节级联连接中的几个选择器开关中的每一个的可动触点的触摸面和固定断开触点。 串联连接在由可动触点和选择开关的固定断路触点形成的闭合电路中的是供电装置，每次选择开关的可动触点每次从相应的触头返回到其断开触点 可能已经形成在触点的接触面上的绝缘氧化膜等被从电源装置输送的足够高的电压电断开。
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公开(公告)号：US3281829A
公开(公告)日：1966-10-25
申请号：US33220163
申请日：1963-12-20
申请人： BURROUGHS CORP
IPC分类号： H01H1/60
CPC分类号： H01H1/605
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公开(公告)号：US2758223A
公开(公告)日：1956-08-07
申请号：US38336053
申请日：1953-09-30
申请人： NIELSEN A C CO
发明人： MUELLER ANDREW A
CPC分类号： H01H1/605 , Y10T307/924
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公开(公告)号：US09837219B2
公开(公告)日：2017-12-05
申请号：US14141755
申请日：2013-12-27
发明人： Kevin Jefferies
摘要： A contact wetting circuit 100 is disclosed for supplying wetting current to sense the state of dry contacts of a switch SW1 setting for an electronic device 10. The contact wetting circuit includes an RC circuit 110 having a resistor R1 and a capacitor C1, and a controller 120 connected to a power supply 130 of the device. The controller supplies a first voltage to the RC circuit to produce a charging current having an average current and/or a peak current below the wetting current parameter of the dry contacts. The charging current is used to charge the capacitor C1 during the first time period. The controller stops the supply of the first voltage to the RC circuit after sufficient charging to allow the charged capacitor C1 to supply a second voltage, across the switch SW1, to produce a wetting current. Thereafter, the controller polls and senses the state of the switch SW1, and performs certain operations accordingly.
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公开(公告)号：US09778668B2
公开(公告)日：2017-10-03
申请号：US14502002
申请日：2014-09-30
摘要： A circuit includes an evaluation node through which current flows from a voltage source node to a sensed switch when the sensed switch is closed. First and second control switches are disposed between the voltage source node and the evaluation node to switch between first and second current paths for the current. The current passes through the first control switch when flowing along the first current path. The second control switch is coupled to a control terminal of the first control switch to deactivate the first control switch and allow the current to flow through the second current path. Multiple passive circuit elements are configured to establish first and second current levels for the current. The passive circuit elements are disposed between the voltage source node and the evaluation node in a circuit arrangement in which no current path to ground is present when the sensed switch is open.
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39.发明申请公开(公告)号：US20170186563A1
公开(公告)日：2017-06-29
申请号：US15377400
申请日：2016-12-13
申请人： AUDI AG
发明人： ARMIN PÖPPEL , STEFAN DÜNSBIER
CPC分类号： H01H1/60 , B60R16/03 , H01H1/605 , H01H47/002 , H01H2047/003
摘要： A method for cleaning electrical contacts of an electrical switching device includes displacing a first electrical contact element and a second electrical contact element of an electrical contact relative to each other so that the first electrical contact element and the second electrical contact element are in a closed position; and when the first and second electrical contact elements are in the closed position applying a waveform on the electrical contact so that the first contact element and the second contact element are excited to undergo a mechanical vibration relative to each other.
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公开(公告)号：US09466444B2
公开(公告)日：2016-10-11
申请号：US14287692
申请日：2014-05-27
发明人： John A. Dickey
CPC分类号： H01H9/54 , H01H1/60 , H01H1/605 , H01H2300/052 , Y10T307/924
摘要： A system for maintaining integrity of a switch contact includes a first resistor-capacitor circuit, a second resistor-capacitor circuit, and a control switch. The first resistor-capacitor circuit is connected to an output of the switch contact and includes a first resistor and a first capacitor. Upon closing of the switch contact, a first wetting current flows through the switch contact. The second resistor-capacitor circuit includes a second resistor and a second capacitor. The control switch is connected between the output of the switch contact and the second resistor-capacitor circuit and is selectively closable to generate a second wetting current through the switch contact. The control switch may be operated as needed to maintain the integrity of the mechanical switch contact.
摘要翻译： 用于保持开关触点完整性的系统包括第一电阻器 - 电容器电路，第二电阻器 - 电容器电路和控制开关。 第一电阻 - 电容器电路连接到开关触点的输出端，并且包括第一电阻器和第一电容器。 在闭合开关触点时，第一润湿电流流过开关触点。 第二电阻电容器电路包括第二电阻器和第二电容器。 控制开关连接在开关触点的输出端和第二电阻 - 电容电路之间，并可选择性地关闭，以产生通过开关触点的第二润湿电流。 可以根据需要操作控制开关，以保持机械开关触点的完整性。
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