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63 条记录 (耗时 0.019 秒)

    POWER SUPPLY CIRCUIT, RELAY DEVICE AND POWER OVER ETHERNET SYSTEM
    1.
    发明申请
    POWER SUPPLY CIRCUIT, RELAY DEVICE AND POWER OVER ETHERNET SYSTEM 审中-公开

    公开(公告)号：US20200294746A1

    公开(公告)日：2020-09-17

    申请号：US16768557

    申请日：2018-08-03

    申请人： HANGZHOU HIKVISION DIGITAL TECHNOLOGY CO., LTD.

    发明人： Weimin WANG

    IPC分类号： H01H47/32 ,  H01H47/14 ,  H04L12/10

    摘要： A power supply circuit, a relay device and a Power over Ethernet system related to the electronic technical field are provided. In the power supply circuit, each rectifier module has its positive output end connected to a positive supply pin, and a negative output end connected to a first end of a switch control module. The positive supply pin is connected to a positive terminal of a relay circuit in the relay device. The switch control module has a second end connected to a negative supply pin, and a control end connected to the positive supply pin. The negative supply pin is connected to a negative terminal of the relay circuit. The switch control module allows conduction between the first end and the second end when the rectifier module outputs a voltage greater than a preset threshold. The power supply circuit can supply power to the relay circuit of the relay device without increasing power wiring and affecting the normal power supply of the powered device by the power sourcing equipment. This improves the application flexibility of the POE technology.

    Circuit configuration for the joint pulse width modulation of valves with quenching
    2.
    发明授权
    Circuit configuration for the joint pulse width modulation of valves with quenching 有权
    具有淬火阀门联合脉宽调制的电路配置

    公开(公告)号：US08559153B2

    公开(公告)日：2013-10-15

    申请号：US12448230

    申请日：2007-12-11

    申请人： Thomas Feucht

    发明人： Thomas Feucht

    IPC分类号： H01H47/14 ,  H02H3/08 ,  H02H9/02

    CPC分类号： B60T8/36 ,  H01F7/1811 ,  H01F7/1844 ,  H01F7/1877 ,  H01F2007/1888 ,  H01H47/325 ,  H03K17/16 ,  Y10T307/406

    摘要： A circuit configuration is provided for switching valves with joint pulse width modulation and quenching, having a first switch to which a pulse width modulation is applied for controlling magnetic fields of a plurality of valve inductors connected to the circuit configuration; a plurality of second switches by which the circuit configuration is able to be switched between a slow and a rapid quenching of the magnetic fields of the inductors; and a diode which is in the conducting state when the second switches are in a switching state for a slow quenching of the magnetic fields of the inductors, and which is no longer parallel to the inductors when the second switches are in a switching state for a rapid quenching of the magnetic fields of the inductors.

    摘要翻译： 提供了一种用于具有联合脉冲宽度调制和淬火的切换阀的电路配置，具有第一开关，脉冲宽度调制用于控制连接到电路配置的多个阀电感器的磁场; 多个第二开关，其电路结构能够在电感器的磁场的慢速和快速淬灭之间切换; 以及当第二开关处于用于电感器的磁场的缓慢淬灭的开关状态时处于导通状态的二极管，并且当第二开关处于开关状态时不再与电感器并联 快速淬火电感的磁场。

    Bistable relay circuit
    3.
    发明授权
    Bistable relay circuit 失效
    双稳态继电器电路

    公开(公告)号：US4686604A

    公开(公告)日：1987-08-11

    申请号：US866700

    申请日：1986-05-27

    申请人： Bernard S. Gilman

    发明人： Bernard S. Gilman

    IPC分类号： H01H47/22 ,  H01H47/00 ,  H01H47/14 ,  H01H47/32

    CPC分类号： H01H47/226

    摘要： A bistable relay circuit adapted to be operated from a two polarity supply of a predetermined voltage, includes a control relay having a coil exhibiting hysterisis, and at least a first single pole, double throw switch, having one pole contact and two non-pole contacts. The control relay coil has a resistance value which is low compared to the resistance value of the first resistor, while a current operatively flowing therethrough is insufficient on its own to energize the control relay. A first resistor is in series with the coil of the control relay. The series combination of the control relay coil and of the first resistor are connected to the power supply. A steering relay has a coil and at least a second single pole, double throw switch, having one pole contact and two non-pole contacts. A single pole, single throw switch is in series with the coil of the steering relay. The series combination of the steering relay coil and the single pole, single throw switch is connected to the power supply. A second resistor is connected to the pole contact of the first switch, and to one of the non-pole contacts of the second switch, and a capacitor is connected to the pole of the second switch and to one polarity of the power supply.

    摘要翻译： 一种适用于从预定电压的两极性电源操作的双稳态继电器电路，包括具有滞后线圈的控制继电器和至少第一单极双掷开关，其具有一个极触点和两个非极触点 。 控制继电器线圈具有与第一电阻器的电阻值相比低的电阻值，而可操作地流过其中的电流本身不足以使控制继电器通电。 第一个电阻与控制继电器的线圈串联。 控制继电器线圈和第一个电阻的串联组合连接到电源。 转向继电器具有线圈和至少第二单极双掷开关，具有一个极触点和两个非极触点。 单极单掷开关与转向继电器的线圈串联。 转向继电器线圈和单极单掷开关的串联组合连接到电源。 第二电阻器连接到第一开关的极触点和第二开关的非极触点中的一个，并且电容器连接到第二开关的极点和电源的一个极性。

    Electric control system for actuating in a predetermined sequence a plurality of electro-magnetic relays
    4.
    发明授权
    Electric control system for actuating in a predetermined sequence a plurality of electro-magnetic relays 失效
    用于在预定序列中执行多个电磁继电器的电控系统

    公开(公告)号：US3796924A

    公开(公告)日：1974-03-12

    申请号：US3796924D

    申请日：1972-12-29

    申请人： TECHNICAL ARCO ESTABLISHMENT

    发明人： FONTANA L

    IPC分类号： G05B19/07 ,  H01H47/00 ,  H01H47/14

    CPC分类号： G05B19/07 ,  H01H47/001

    摘要： An electric control device for activating, according to a predetermined sequence, a plurality of electromagnetic relays, comprising an electronic program-switch connected to the relays by means of only three conductors only, two of which provide control signals and the other being a common return. Suitable change-over switches are included, so that the electric pulses alternatively sent through the program-switch onto the two control conductors, give rise to the sequential activation of said relays. The program-switch comprises: a transistor electronic circuit for generating controlling the frequency, duration and stability of the pulses, and a rotary relay, which when energized by a servo-relay, switches the pulses, alternatively, between the two control conductors. The programswitch also includes too a secondary electronic circuit for the control of the connection of the relays to the program-switch, and for adjusting the operation of the relays, each relay being connected to the return conductor through a change-over switch acted on by the preceding relay.

    Selective and sequential control system
    5.
    发明授权
    Selective and sequential control system 失效
    选择性和顺序控制系统

    公开(公告)号：US3723827A

    公开(公告)日：1973-03-27

    申请号：US3723827D

    申请日：1972-02-11

    申请人： GRISWOLD CONTROLS

    发明人： GRISWOLD D ,  MC CARTY W

    IPC分类号： A01G25/16 ,  G05B19/07 ,  H01H47/14

    CPC分类号： G05B19/07 ,  A01G25/162 ,  Y02A40/237 ,  Y10S239/15 ,  Y10T307/461 ,  Y10T307/484

    摘要： A known system for controlling a plurality of stations, such as irrigating sprinkler valves, over a conductor pair for either selective or sequential activation includes a solenoid as the device to be activated at each station and requires short interruptions in the operating voltage at a control point to effect sequential activation of the stations, but for selective activation this same system utilizes two different voltage levels with short interruptions, a lower voltage being required to bypass unwanted stations and higher voltage built up at a controlled rate being required for selective activation of a station. An improvement in the known system includes delay means in association with the solenoids at the stations for delaying the response of the solenoids thereby simplifying the equipment the control point by permitting the use of only one voltage level, while avoiding activation of unselected stations.

    摘要翻译： 用于控制选择性或顺序激活的导体对上的多个站（例如冲洗喷淋阀）的已知系统包括作为在每个站处被激活的装置的螺线管，并且需要在控制点处的操作电压的短暂中断 为了实现站点的顺序激活，但是对于选择性激活，该相同系统利用具有短暂中断的两个不同的电压电平，需要较低的电压来绕过不需要的站，并且以受控的速率建立的更高的电压是选择性激活站所需要的 。 已知系统的改进包括与站点处的螺线管相关联的延迟装置，用于延迟螺线管的响应，从而通过允许仅使用一个电压电平来简化控制点的设备，同时避免启动未选择的电台。