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    • 1. 发明授权
    • Solid state motor speed control
    • 固态电机调速
    • US5789894A
    • 1998-08-04
    • US832247
    • 1997-04-03
    • Benjamin NeigerDouglas R. WatsonRoger BradleySaul Rosenbaum
    • Benjamin NeigerDouglas R. WatsonRoger BradleySaul Rosenbaum
    • H02M1/44H02M5/293H02P25/14H02P27/02H02P1/26
    • H02M1/44H02M5/293H02P25/14H02P27/02
    • A solid state motor speed control is described that is capable of controlling a motor so that it operates quietly, eliminating annoying buzzing noises that would otherwise be generated by the motor's windings. The invention provides for motor speed control with infinitely variable speed control settings. Rather than use triacs that generate RFI noise and cause motor windings to buzz due to their inherent avalanche switching, the invention utilizes power FETs or IGBTs to provide the switching function to control power delivery to the motor load . The power switches are controlled by an oscillator that generates a pulse train with a duty cycle controllable by the user. A filter shapes this signal into a trapezoidal control signal that drives the gate input of the power FET or IGBT switch. A kick start circuit turns the motor on initially for two to three seconds to overcome the inertia of the motor and its load. A zero crossing detector prevents the motor from being turned on except at a zero crossing of the AC source to further reduce noise.
    • 描述了一种固态电动机速度控制,其能够控制电动机以使其静音地操作,消除由电动机的绕组产生的令人讨厌的嗡嗡声。 本发明提供具有无级变速控制设置的电机速度控制。 本发明不是使用产生RFI噪声的三端双向可控硅,并且由于其固有的雪崩切换而使电动机绕组嗡嗡声,而是利用功率FET或IGBT提供开关功能来控制向电动机负载的功率传递。 功率开关由振荡器控制,该振荡器产生具有用户可控的占空比的脉冲串。 滤波器将该信号形成为驱动功率FET或IGBT开关的栅极输入的梯形控制信号。 脚踏起动电路最初将马达开启二至三秒,以克服电机及其负载的惯性。 零交叉检测器防止电动机接通,除非交流电源过零点以进一步降低噪声。
    • 2. 发明授权
    • Solid state motor speed control
    • 固态电机调速
    • US5684376A
    • 1997-11-04
    • US435001
    • 1995-05-04
    • Benjamin NeigerDouglas R. WatsonRoger BradleySaul Rosenbaum
    • Benjamin NeigerDouglas R. WatsonRoger BradleySaul Rosenbaum
    • H02M1/44H02M5/293H02P25/14H02P27/02H02P1/26
    • H02M1/44H02M5/293H02P25/14H02P27/02
    • A solid state motor speed control is described that is capable of controlling a motor so that it operates quietly, eliminating annoying buzzing noises that would otherwise be generated by the motor's windings. The invention provides for motor speed control with infinitely variable speed control settings. Rather than use triacs that generate RFI noise and cause motor windings to buzz due to their inherent avalanche switching, the invention utilizes power FETs or IGBTs to provide the switching function to control power delivery to the motor load. The power switches are controlled by an oscillator that generates a pulse train with a duty cycle controllable by the user. A filter shapes this signal into a trapezoidal control signal that drives the gate input of the power FET or IGBT switch. A kick start circuit turns the motor on initially for two to three seconds to overcome the inertia of the motor and its load. A zero crossing detector prevents the motor from being turned on except at a zero crossing of the AC source to further reduce noise.
    • 描述了一种固态电动机速度控制,其能够控制电动机,使其静音地操作,消除由电动机的绕组产生的令人讨厌的嗡嗡声。 本发明提供具有无级变速控制设置的电机速度控制。 本发明不是使用产生RFI噪声的三端双向可控硅,并且由于其固有的雪崩切换而使电动机绕组嗡嗡声,而是利用功率FET或IGBT提供开关功能来控制向电动机负载的功率传递。 功率开关由振荡器控制,该振荡器产生具有用户可控的占空比的脉冲串。 滤波器将该信号形成为驱动功率FET或IGBT开关的栅极输入的梯形控制信号。 脚踏起动电路最初将马达开启二至三秒,以克服电机及其负载的惯性。 零交叉检测器防止电动机接通,除非交流电源过零点以进一步降低噪声。
    • 4. 发明授权
    • Ground fault circuit interrupter incorporating miswiring prevention circuitry
    • 接地故障电路中断器结合防抱死线路
    • US06226161B1
    • 2001-05-01
    • US09370352
    • 1999-08-09
    • Benjamin NeigerSaul RosenbaumBernard Gershen
    • Benjamin NeigerSaul RosenbaumBernard Gershen
    • H02H316
    • H02H3/338H02H3/04
    • A ground fault circuit interrupter (GFCI) with built in intelligence is described that includes circuitry to automatically indicate a device miswiring condition. When a GFCI is wired with its AC and LOAD terminals reversed, downstream devices are still protected in the event of a ground fault but the duplex receptacle on the GFCI itself is not. The invention incorporates miswiring sense circuitry that automatically triggers the generation of visual and audible alarms in the event a miswiring condition is sensed. The invention employs an alarm inhibiting technique that incorporates sense circuitry connected to the AC terminals on one side of the internal GFCI switches or relays and alarm generation circuitry connected to the LOAD terminals on the opposite side.
    • 描述了具有内置智能的接地故障电路断路器(GFCI),其包括自动指示设备接线状况的电路。 当GFCI与其AC和LOAD端子相连接时,下游设备在接地故障的情况下仍然受到保护,但GFCI本身的双工插座不受保护。 本发明包括误接线感测电路,其在感测到接线不良情况的情况下自动触发视觉和听觉报警的产生。 本发明采用报警抑制技术,其包括连接到内部GFCI开关或继电器一侧上的AC端子的感测电路和连接到相对侧上的LOAD端子的报警产生电路。
    • 6. 发明授权
    • Intelligent ground fault circuit interrupter
    • US5715125A
    • 1998-02-03
    • US790037
    • 1997-01-28
    • Benjamin NeigerBernard GershenSaul Rosenbaum
    • Benjamin NeigerBernard GershenSaul Rosenbaum
    • H02H1/04H02H1/06H02H3/05H02H3/33H02H3/44H02H3/28
    • H02H3/338H02H11/002H02H3/335H02H1/04H02H1/06H02H3/05H02H3/337H02H3/44
    • An intelligent circuit interrupt system is electrically connected between an AC source and a load for interrupting a flow of AC from the source to the load upon detection of an interrupt condition. A circuit interrupter electrically connected to phase and neutral terminals of the AC source defines the interrupt condition. A relay switch with a relay coil and phase and neutral contacts is included such that line and load ends of the phase contact are electrically connected, respectively, between the interrupt means load side phase port and a phase terminal of the load. Line and load ends of the neutral contact are electrically connected, respectively, between the interrupt neutral port and a neutral terminal of the load. The relay coil is electrically coupled between load sides of said phase and neutral contacts for controlling the contacts in response to the interrupt signal. An open-contact miswiring detector (OCMD) is electrically connected to one of the phase and neutral contacts for detecting a miswiring condition when the contacts are in an open state, and a closed-contact miswiring detector (CCMD) is electrically connected to the OCMD and to one of the neutral and phase contacts for detecting a miswiring condition when the contacts are in a closed state. A timing signal generator generates system timing signals. A test circuit electrically coupled to the interrupt means and the timing signal generator tests the interrupt means operability. An alarm circuit is electrically responsive to the test circuit, the timing signal generator, the OCMD and the CCMD for communicating an open-contact miswiring condition, a closed-contact miswiring condition, an operational failure condition, and a need for external testing condition. A power supply is electrically connected between the load ends of the phase and neutral contacts, and to the timing signal generator.
    • 8. 发明授权
    • Intelligent ground fault circuit interrupter
    • 智能接地故障电路断路器
    • US6111733A
    • 2000-08-29
    • US288081
    • 1998-01-14
    • Benjamin NeigerBernard GershenSaul Rosenbaum
    • Benjamin NeigerBernard GershenSaul Rosenbaum
    • H02H1/04H02H1/06H02H3/05H02H3/33H02H3/44H02H9/00
    • H02H3/338H02H11/002H02H3/335H02H1/04H02H1/06H02H3/05H02H3/337H02H3/44
    • An intelligent circuit interrupt system is electrically connected between an AC source and a load for interrupting a flow of AC from the source to the load upon detection of an interrupt condition. A circuit interrupter electrically connected to phase and neutral terminals of the AC source defines the interrupt condition. A relay switch with a relay coil and phase and neutral contacts is included such that line and load ends of the phase contact are electrically connected, respectively, between the interrupt means load side phase port and a phase terminal of the load. Line and load ends of the neutral contact are electrically connected, respectively, between the interrupt neutral port and a neutral terminal of the load. The relay coil is electrically coupled between load sides of said phase and neutral contacts for controlling the contacts in response to the interrupt signal. An open-contact miswiring detector (OCMD) is electrically connected to one of the phase and neutral contacts for detecting a miswiring condition when the contacts are in an open state, and a closed-contact miswiring detector (CCMD) is electrically connected to the OCMD and to one of the neutral and phase contacts for detecting a miswiring condition when the contacts are in a closed state. A timing signal generator generates system timing signals. A test circuit electrically coupled to the interrupt means and the timing signal generator tests the interrupt means operability. An alarm circuit is electrically responsive to the test circuit, the timing signal generator, the OCMD and the CCMD for communicating an open-contact miswiring condition, a closed-contact miswiring condition, an operational failure condition, and a need for external testing condition. A power supply is electrically connected between the load ends of the phase and neutral contacts, and to the timing signal generator.
    • 智能电路中断系统电连接在AC源和负载之间,用于在检测到中断条件时中断从源到负载的AC流。 与AC电源的相位和中性端子电连接的断路器定义了中断条件。 包括具有继电器线圈和相和中性触点的继电器开关,使得相触点的线路和负载端分别在中断装置负载侧相位端口和负载的相位端子之间电连接。 中性触点的线路和负载端分别电气连接在中断中立端口和负载的中性端子之间。 继电器线圈电耦合在所述相位的负载侧和中性触点之间,以响应于中断信号来控制触点。 一个开路接线误接线检测器(OCMD)电连接到相位和中性触点中的一个,用于检测接点处于打开状态时的接线状况,闭合接线误接线检测器(CCMD)电连接到OCMD 以及当触点处于闭合状态时用于检测接线不良状况的一个中性线和相位触点。 定时信号发生器产生系统定时信号。 电耦合到中断装置的测试电路和定时信号发生器测试中断装置的可操作性。 报警电路对测试电路,定时信号发生器,OCMD和CCMD进行电气响应,用于传送开路接触不良接线状态,闭路接触错误接线状况,操作故障状况以及对外部测试条件的需要。 电源电连接在相位的负载端和中性触点之间,并连接到定时信号发生器。