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公开(公告)号：US4626954A
公开(公告)日：1986-12-02
申请号：US647763
申请日：1984-09-06
摘要： A power controller with overload protection having an alternating current source (AC) connected through power lines (L1, L2) and a pair of power switching devices (FET1, FET2) and a current sensor resistance shunt (SH) in series to a load (LD). A line-derived control power supply circuit (LDS) is connected through one of the power switching devices (FET1) to the lower line (L1, L2) such that the control power supply current does not flow through the shunt (SH) or the load (LD). Close and open commands are applied from a control switch (CSW) through a threshold detector (DT) and a logic circuit (LG1) to operate a latch (LCH) that turns the power switching devices (FET1, FET2) on and off under the clocking control of a zero voltage detector (ZVD) and a zero current detector (ZCD) and the gating control of a minimum current circuit (MCC). An overload circuit (AVC, ITC, TTC) provides instantaneous trip of the latch on rupture current or timed trip of the latch on smaller overloads. Opto-isolated indicators (SS, ST) indicate trip conditions and loss of line voltage conditions as well as whether the load current is above or below a minimum current value which is a current level adequate for operation of the control system.
摘要翻译： 具有过载保护的电力控制器具有通过电力线（L1，L2）和一对功率开关装置（FET1，FET2）和与负载串联的电流传感器电阻分流（SH）连接的交流电源（AC） LD）。 线路控制电源电路（LDS）通过功率开关器件（FET1）之一连接到下线（L1，L2），使得控制电源电流不流过分流器（SH）或 负载（LD）。 从控制开关（CSW）通过阈值检测器（DT）和逻辑电路（LG1）施加闭合和打开的命令，以操作锁存器（LCH），该锁存器（LCH）在下面的电源开关器件（FET1，FET2） 零电压检测器（ZVD）和零电流检测器（ZCD）的时钟控制和最小电流电路（MCC）的门控控制。 过载电路（AVC，ITC，TTC）在较小的过载情况下，提供闩锁对断路电流或定时跳闸的瞬时跳闸。 光电隔离指示器（SS，ST）指示跳闸条件和线路电压条件的损失，以及负载电流是否高于或低于最小电流值，该最小电流值是适用于控制系统操作的电流水平。
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公开(公告)号：US4599555A
公开(公告)日：1986-07-08
申请号：US693700
申请日：1985-01-22
IPC分类号： H02M3/155 , H03K17/567 , H03K17/687
CPC分类号： H03K17/567
摘要： A solid state DC power control system having a single N-type or N-channel or majority carrier solid state switching element (Q1) connected to the high side (L) of the power supply for energizing a ground or neutral (V.sub.o) connected load (LD). A voltage level translation circuit (2,2') supplies a floating regulated control voltage to the switching element (Q1) high enough to maintain it turned on even if the voltage at the low side of the switching element (Q1) rises up to or near the supply voltage thereby allowing use of such N-type switching device (Q1) in the high side (L) of the supply. A zener diode (ZD3) limits the gate(G)-to-source(S) voltage to the proper level. A non-inverting drive circuit (10,12) controlled by a logic level signal input element (Q2) controls connection of the high voltage to the switching (Q1) gate (G). A first version uses a DC-DC converter (CON) and a preferred version uses a voltage multiplier (VM) in the voltage level translation, high voltage, gate supply circuit (2,2').
摘要翻译： 一种具有连接到电源的高侧（L）的单个N型或N沟道或多数载流子固态开关元件（Q1）的固态DC功率控制系统，用于为接地或中性（Vo）连接负载 （LD）。 电压电平转换电路（2,2'）向开关元件（Q1）提供足够高的浮动稳压控制电压，以使开关元件（Q1）的低侧的电压上升到 靠近电源电压，从而允许在电源的高侧（L）中使用这种N型开关装置（Q1）。 齐纳二极管（ZD3）将栅极（G）至源极（S）电压限制到适当的电平。 由逻辑电平信号输入元件（Q2）控制的非反相驱动电路（10,12）控制高电压与开关（Q1）栅极（G）的连接。 第一版本使用DC-DC转换器（CON），并且优选版本在电压电平转换，高电压，栅极供应电路（2,2'）中使用电压倍增器（VM）。
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公开(公告)号：US4616305A
公开(公告)日：1986-10-07
申请号：US700843
申请日：1985-02-11
IPC分类号： H02M7/5387 , H02M7/538
CPC分类号： H02M7/5387
摘要： A power MOSFET reversing H-drive system having a first pair of N-channel and P-channel MOSFETs (Q1,Q2) connected in series with a load (LD1,LD2) to a power supply source (T1) and a second like pair of N-channel and P-channel MOSFETs (Q3,Q4) connected in series with the load (LD1,LD2) to the source (T1), each pair having a resistance voltage divider (R1-R2, R5-R6) for providing the P-channel MOSFET (Q1,Q3) with a different voltage level gate signal from the logic level input signal by which the N-channel MOSFET (Q2,Q4) is gated, an overvoltage protector (Z1,Z2) allowing extension of the supply voltage (T1) range under which the system is operable, and the on-state resistances and the flyback current capability of the intrinsic diodes (ID1-ID4) being matched to the size of the load to be driven.
摘要翻译： 功率MOSFET反向H驱动系统，其具有与负载（LD1，LD2）串联连接到电源（T1）和第二类似对的第一对N沟道和P沟道MOSFET（Q1，Q2） 与负载（LD1，LD2）串联连接到源极（T1）的N沟道和P沟道MOSFET（Q3，Q4），每对具有电阻分压器（R1-R2，R5-R6），用于提供 具有与N沟道MOSFET（Q2，Q4）选通的逻辑电平输入信号不同的电压电平门信号的P沟道MOSFET（Q1，Q3），允许扩展N沟道MOSFET（Q2，Q4）的过电压保护器 电源电压（T1）范围，本体二极管（ID1-ID4）的导通电阻和反激电流能力与要驱动的负载的大小相匹配。
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4.发明授权DC or AC solid state switch with improved line-derived control circuit power supply 失效DC或AC固态开关，具有改进的线路导出控制电路电源
公开(公告)号：US4649302A
公开(公告)日：1987-03-10
申请号：US870661
申请日：1986-06-02
IPC分类号： H03K17/687 , H03K17/785 , H03K17/79
CPC分类号： H03K17/6874 , H03K17/785 , H03K17/79
摘要： A solid state switch (SS) for controlling a load (1) supplied from either an alternating current (AC) or a direct current (DC) power supply line (L1, L2) having a pair of solid state devices (FET1, FET2) for controlling energization of the load and a common control circuit (CC) therefore which includes a diode isolated, capacitive-reactively coupled, line-derived power supply circuit (PSC) for the common control circuit and an opto-isolated logic signal input circuit (ISO) such power supply circuit effectively eliminating the need for transformers or the line.
摘要翻译： 一种用于控制从具有一对固态器件（FET1，FET2）的交流（AC）或直流（DC）电源线（L1，L2）提供的负载（1）的固态开关（SS） 用于控制负载的通电以及公共控制电路（CC），其包括用于公共控制电路的二极管隔离，电容 - 反应耦合的线路导电电源电路（PSC）和光隔离逻辑信号输入电路 ISO）这样的电源电路有效地消除了对变压器或线路的需要。
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公开(公告)号：US4638226A
公开(公告)日：1987-01-20
申请号：US699522
申请日：1985-02-07
CPC分类号： H02P25/14 , Y10S323/901
摘要： A motor (M) supplied by AC full-wave voltage is controlled by a triac (Q2) under the control of a double-time constant triggering circuit which has a speed setting branch (R3-C2) connected at the triac (Q2) side of the motor (M) and the other time constant branch (R1-C1) connected at the supply side of the motor (M) to provide a feedback function as well as a first time constant. A unidirectional diode (D1) is incorporated in the feedback sensing time constant branch for rendering feedback signals only on alternate half cycles to prevent oscillation and overcompensation of motor speed due to the feedback signal. A soft-start circuit, usable also in half-wave applications, is incorporated in the branch containing adjustable speed setting resistor and comprises a transistor (Q3) having its collector-emitter circuit connected in series with the adjustable resistor (R3). A resistor (R4)-capacitor(C3) time constant circuit is provided to supply time variable current to the base of the transistor (Q3) through a resistor (R5) for causing the transistor (Q3) to gradually conduct, thereby gradually decreasing its resistance and therefore gradually increasing the firing angle of the triac (Q2).
摘要翻译： 由AC全波电压提供的电动机（M）由三端双向可控硅（Q2）控制，在双倍频（AC）侧连接有速度设定分支（R3-C2）的双倍时间常数触发电路的控制下 的电动机（M）和连接在电动机（M）的供给侧的另一时间常数分支（R1-C1），以提供反馈功能以及第一时间常数。 单向二极管（D1）被并入反馈感测时间常数分支中，用于仅在交替的半周期上渲染反馈信号，以防止由于反馈信号引起的电动机速度的振荡和过度补偿。 也可以在半波应用中使用的软启动电路被并入包含可调速度设定电阻器的分支中，并且包括其集电极 - 发射极电路与可调电阻器（R3）串联连接的晶体管（Q3）。 提供电阻器（R4）电容器（C3）时间常数电路，通过电阻器（R5）向晶体管（Q3）的基极提供时间可变电流，以使晶体管（Q3）逐渐导通，从而逐渐减小其 并且因此逐渐增加三端双向tri隙（Q2）的触发角。
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公开(公告)号：US4691197A
公开(公告)日：1987-09-01
申请号：US748106
申请日：1985-06-24
摘要： A solid state switching circuit for energizing a lamp (L) is connected around a fuse (12) across an AC supply for detecting a voltage differential at the opposite sides of a blown fuse and applying that differential across the control (g) and switching (c) electrodes of the solid state switch (SCR) to render the same conductive. Current limiting resistors (RL1 and RL2) are placed in the ends of wire conductors which are to be connected at opposite sides of the fuse, thereby to limit current flowing in the conductors over the entire length of the conductor, minimizing electrical shock hazard upon damage to the conductor.
摘要翻译： 用于激励灯（L）的固态切换电路连接在交流电源上的熔丝（12）周围，用于检测熔断的熔断器的相对侧的电压差，并将该差分跨越控制（g）和开关（ c）固态开关（SCR）的电极，以产生相同的导电性。 电流限制电阻（RL1和RL2）放置在要在熔断器相对侧连接的导线的端部，从而限制导体在导体的整个长度上流动的电流，从而最大限度地减少损坏时的电击危险 到指挥。
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公开(公告)号：US4857837A
公开(公告)日：1989-08-15
申请号：US139352
申请日：1987-12-29
申请人： Mich S. Baran , Bruce C. Beihoff , Michael A. Damiano , James E. Hansen , Jerome K. Hastings , Allen J. Slomczewski , Charles J. Tennies
发明人： Mich S. Baran , Bruce C. Beihoff , Michael A. Damiano , James E. Hansen , Jerome K. Hastings , Allen J. Slomczewski , Charles J. Tennies
CPC分类号： G01R1/06766 , G01R15/205
摘要： The present invention is a current sensor employing a magneto resistive sensor having high fidelity of output. This current sensor includes a magnetic flux concentrator substantially encircling the electrical conductor having magnetic sensing, a magnetic device generating a magnetic field component along an axis offset from the principle axis, a magneto resistive device disposed in the magnetic sensing region, a constant current source supplying a predetermined constant current to said magneto resistive device, and a voltage sensing circuit connected to said magneto resistive device for measuring resistance by measuring a difference voltage induced by said constant current. This measured voltage corresponds to the current through the conductor. The magneto resistive device is formed as a Wheatstone bridge having a first and second pair of opposite terminals. The constant current source provides a predetermined constant current whereby the change with temperature in the differential voltage between said second pair of terminals is equal and opposite to the change in voltage of the total bridge resistance with temperature and the change in the bridge offset voltage with temperature.
摘要翻译： 本发明是采用具有高保真输出的磁阻传感器的电流传感器。 该电流传感器包括基本上环绕具有磁感测的电导体的磁通量集中器，沿着与主轴偏离的轴产生磁场分量的磁性装置，设置在磁感应区域中的磁阻元件，恒流源 向所述磁阻器件施加预定的恒定电流，以及连接到所述磁阻器件的电压检测电路，用于通过测量由所述恒定电流引起的差值电压来测量电阻。 该测量电压对应于通过导体的电流。 磁阻电阻器形成为具有第一和第二对相对端子的惠斯通电桥。 恒定电流源提供预定的恒定电流，由此在所述第二对端子之间的差分电压中随温度的变化等于并且与总桥电阻随温度变化的电压和桥接偏移电压随温度的变化相反 。
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