Triac control circuit
    22.
    发明申请
    Triac control circuit 有权
    Triac控制电路

    公开(公告)号:US20040217800A1

    公开(公告)日:2004-11-04

    申请号:US10836420

    申请日:2004-04-29

    CPC classification number: H02M1/083 H02M1/081

    Abstract: A circuit for controlling a triac, comprising: a bidirectional current-limiting active element connecting the triac gate to its opposite power electrode; and a switch connecting the gate to the other power electrode of the triac.

    Abstract translation: 一种用于控制三端双向可控硅的电路,包括:将三端双向可控硅开关栅极连接到其相对的功率电极的双向限流有源元件; 以及将栅极连接到三端双向可控硅开关元件的另一功率电极的开关。

    Method and circuit arrangement for generating a representation of the supply voltage in a frequency converter
    23.
    发明授权
    Method and circuit arrangement for generating a representation of the supply voltage in a frequency converter 有权
    用于产生变频器中的电源电压的表示的方法和电路装置

    公开(公告)号:US06181582B2

    公开(公告)日:2001-01-30

    申请号:US09518052

    申请日:2000-03-02

    Applicant: Norbert Huber

    Inventor: Norbert Huber

    CPC classification number: H02M1/081 G01R29/18 H02J3/38 H02M5/4585 H02P23/06

    Abstract: A circuit arrangement for generating representations of supply voltages that includes a first path that receives control signals, the first path having a subtracter for forming a difference signal from two of the control signals and a low pass filter to receive the difference signal. A second path receives the control signals, the second path includes a second low pass filters that passes frequencies higher than the first low pass filter does. Output signals of the first and second paths are fed to a combination network which, as a function of the difference between the output signals of the first and second paths, passes on the output signals of one of the first and second paths.

    Abstract translation: 一种用于产生电源电压的表示的电路装置,包括接收控制信号的第一路径,第一路径具有用于从两个控制信号形成差分信号的减法器和用于接收差分信号的低通滤波器。 第二路径接收控制信号,第二路径包括通过高于第一低通滤波器的频率的第二低通滤波器。 第一和第二路径的输出信号被馈送到组合网络,该组合网络作为第一和第二路径的输出信号之间的差异的函数通过第一和第二路径之一的输出信号。

    Control circuit for triacs
    24.
    发明授权
    Control circuit for triacs 失效
    三端双向可控硅开关控制电路

    公开(公告)号:US5036234A

    公开(公告)日:1991-07-30

    申请号:US392993

    申请日:1989-07-24

    CPC classification number: H02M5/2573 H02M1/081

    Abstract: A direct current voltage controlled triggering circuit for triacs connected via a consumer resistor to an alternating current supply voltage uses the controllable channel resistance of a field effect rransistor to distribute loading current among a series connection of capacitors connected via a load resistor and the consumer resistor to the a.c. supply voltage. A connection point of the load resistor and a load capacitor in the series connection is connected via a diac to the gate electrode of the triac, and the remaining series connected capacitors have an approximately equal value to provide symmetrization of the current flow phase angle for the diac.

    Abstract translation: PCT No.PCT / DE88 / 00664 Sec。 371日期:1989年7月24日 102(e)日期1989年7月24日PCT提交1988年10月27日PCT公布。 公开号WO89 / 05056 日期1996年6月1日。用于通过消费电阻器连接到交流电源电压的三端双向可控硅开关元件的直流电压控制触发电路使用场效应晶体管的可控通道电阻来分配负载电流, 负载电阻和消费电阻到交流 电源电压。 串联连接中的负载电阻器和负载电容器的连接点通过双向可控硅连接到三端双向可控硅开关元件的栅电极,其余的串联电容器具有大致相等的值,以提供电流流动相位角的对称 diac。

    Circuit for generating a sinusoidal synchronization voltage for firing
thyristors
    25.
    发明授权
    Circuit for generating a sinusoidal synchronization voltage for firing thyristors 失效
    用于产生用于烧制晶闸管的正弦同步电压的电路

    公开(公告)号:US4464620A

    公开(公告)日:1984-08-07

    申请号:US365649

    申请日:1982-04-05

    CPC classification number: H02M1/081 H03L7/145 Y10S388/911 Y10S388/917

    Abstract: A synchronization voltage is formed as the product of the output voltage of a phase-locked loop and the mean value of the magnitude of the network voltage. The synchronization voltage is compared with the network voltage. A first control signal is formed when both voltages are the same. A reversing switch, in a first switching state, conducts the network voltage and, in a second switching state, conducts the synchronization voltage to a reference frequency-input of the phase-locked loop. A second control signal is formed when the phase-locked loop locks or latches with the thereto inputted reference frequency. The reversing switch is controlled by both control signals such that upon absence of the first control signal and the simultaneous presence of the second control signal there is attained the second switching state and otherwise the first switching state. The circuit can be beneficially used in a current regulation circuit of a drive for a powerful electric motor, with a power supply network operating at up to 400 Hz with a weak generator.

    Abstract translation: 形成同步电压作为锁相环的输出电压与网络电压幅度的平均值的乘积。 将同步电压与网络电压进行比较。 当两个电压相同时形成第一控制信号。 在第一开关状态下的反向开关导通网络电压,并且在第二开关状态下,将同步电压导通到锁相环的基准频率输入。 当锁相环锁定或锁定其输入的参考频率时,形成第二控制信号。 反转开关由两个控制信号控制,使得在没有第一控制信号和同时存在第二控制信号时,获得第二开关状态,否则达到第一开关状态。 该电路可以有益地用于强大的电动机的驱动器的电流调节电路,电源网络使用弱发生器工作在高达400 Hz。

    System for providing a firing signal to an electrical power switch
    26.
    发明授权
    System for providing a firing signal to an electrical power switch 失效
    用于向电力开关提供点火信号的系统

    公开(公告)号:US4453123A

    公开(公告)日:1984-06-05

    申请号:US315305

    申请日:1981-10-27

    Inventor: Ronald E. Erkman

    CPC classification number: H03K17/73 H02M1/081

    Abstract: A system for providing a firing signal to an electrical power switch at a selectable instant during each cycle of a periodic waveform electric power source. A comparator receives a signal varying monotonically with time and a control voltage as inputs, and produces the firing signal at such time that one of these inputs first exceeds the other. The control voltage is clamped to a predetermined value to provide a minimum power output from the electrical power switch.

    Abstract translation: 一种用于在周期性波形电源的每个周期期间以可选择的时刻向电力开关提供点火信号的系统。 比较器接收随时间单调变化的信号和作为输入的控制电压,并且在这些输入中的一个首先超过另一个的时间产生触发信号。 控制电压被钳位到预定值以提供从电力开关输出的最小功率。

    Zero crossover triggering circuit for thyristor
    27.
    发明授权
    Zero crossover triggering circuit for thyristor 失效
    用于晶闸管的零交叉触发电路

    公开(公告)号:US4417199A

    公开(公告)日:1983-11-22

    申请号:US377744

    申请日:1982-05-13

    CPC classification number: B03C3/68 H02M1/081 Y10S323/903

    Abstract: A power circuit for a precipitator utilizes a pair of silicon controlled rectifiers (SCR's) which are triggered by detecting the zero crossover of a power signal. The power transmitted through the SCR's is determined by the time period from the detection of the zero crossover to the generation of the trigger signal. Power signals are typically subject to noise which interferes with the detection of the zero crossover. Filters are provided for reducing the noise interference but function without altering the phase relation of the zero crossover of the filtered signal in respect to the unfiltered power signal. A pulse train of higher frequency than the power signal is generated to provide a plurality of triggering pulses for the SCR. Further, phase control signals are generated for each SCR to prevent the generation of trigger pulses when the SCR's are reverse biased. Thus, the present invention provides a precision voltage control for a power supply circuit which is particularly applicable for powering an electrostatic precipitator.

    Abstract translation: 用于除尘器的电源电路利用一对可控硅整流器(SCR),其通过检测功率信号的零交叉触发。 通过SCR发送的功率由从零交叉检测到触发信号的产生的时间段确定。 功率信号通常受到干扰零分频检测的噪声。 滤波器被提供用于减少噪声干扰但功能而不改变滤波信号的零交叉相对于未滤波的功率信号的相位关系。 产生频率高于功率信号的脉冲串,为SCR提供多个触发脉冲。 此外,对于每个SCR产生相位控制信号,以防止当SCR被反向偏置时产生触发脉冲。 因此,本发明提供了特别适用于静电除尘器供电的电源电路的精密电压控制。

    Power supply for a thermionic emission gas discharge lamp
    28.
    发明授权
    Power supply for a thermionic emission gas discharge lamp 失效
    用于热电子发射气体放电灯的电源

    公开(公告)号:US3904925A

    公开(公告)日:1975-09-09

    申请号:US40246173

    申请日:1973-10-01

    Applicant: GEN ELECTRIC

    CPC classification number: H02M1/081 H03K3/57 H05B41/042 Y10S315/05

    Abstract: The present invention relates to a power supply for a gas discharge lamp such as a xenon arc lamp normally operating in the thermionic emission mode. The power supply is energized from an a.c. line and includes a d.c. source of low voltage and high current for sustained operation and a starter. During starting, the starter provides a succession of high voltage trigger pulses for initiating the gas discharge and a succession of unidirectional, medium voltage power pulses synchronized with the trigger pulses for heating the lamp to thermionic emission temperature. The medium voltage pulses are portions of half cycles derived from the a.c. line and applied to the lamp without filtering or energy storage. The circuit uses low cost components and provides a gradual warm-up of the lamp with a minimum of thermal shock.

    Abstract translation: 本发明涉及一种通常以热电子发射模式工作的氙弧灯等气体放电灯的电源。 电源从一个交流电 线,包括一个直径 用于持续运行的低电压和高电流源和起动器。 起动期间,起动器提供一连串的高电压触发脉冲,用于启动气体放电,以及一系列与用于将灯加热至热离子发射温度的触发脉冲同步的单向中压电源脉冲。 中压脉冲是从a.c.得到的半周期的部分。 线路并应用于灯没有过滤或储能。 该电路使用低成本元件,并以最少的热冲击提供灯的逐渐预热。

    Triggering means for silicon controlled rectifier circuit
    29.
    发明授权
    Triggering means for silicon controlled rectifier circuit 失效
    用于可控硅整流电路的触发装置

    公开(公告)号:US3903476A

    公开(公告)日:1975-09-02

    申请号:US48867174

    申请日:1974-07-15

    Applicant: SKIL CORP

    CPC classification number: H02P7/295 H02M1/081

    Abstract: The circuit for controlling the power supplied to a load from an alternating source in which a silicon control rectifier is connected in series with the source and the load. The particular silicon control rectifier used is one in which the impedance between the cathode and the gate is sufficiently high so that a simple RC firing circuit can be connected to the gate and the capacitor charged periodically to a value sufficient to effect conduction of the SCR.

    Abstract translation: 用于控制从其中硅控制整流器与源极和负载串联连接的交流源向负载提供的功率的电路。 所使用的特定硅控制整流器是其中阴极和栅极之间的阻抗足够高的一个,使得简单的RC点火电路可以连接到栅极和电容器周期性地充电到足以实现SCR导通的值。

    Phase controlled power supply
    30.
    发明授权
    Phase controlled power supply 失效
    相控电源

    公开(公告)号:US3870903A

    公开(公告)日:1975-03-11

    申请号:US36174773

    申请日:1973-05-18

    Applicant: XEROX CORP

    Inventor: TAYLOR LEO OTTIS

    CPC classification number: H02M7/1555 H02M1/081

    Abstract: A phase controlled power supply having a gate-controlled current regulator, such as a silicon controlled rectifier, and a gate signal generator circuit including a unijunction transistor, in which substantially equal power dissipation is provided through a load device regardless of variations in the magnitude of an alternating current supply voltage. Regulation of the current flow is achieved by varying the firing time or angle of the unijunction transistor when there is a variation in the magnitude of the supply voltage. This variation is achieved by connecting a capacitor having a value between 0.1 and 0.5 microfarads between the base-two electrode of the unijunction transistor and an electrode of the gate-controlled current regulator.

    Abstract translation: 具有诸如可控硅整流器的栅极控制电流调节器和包括单结晶体管的栅极信号发生器电路的相位控制电源,其中通过负载装置提供基本相等的功率耗散,而不管幅度的变化如何 交流电源电压。 电流流动的调节是通过改变单电晶体管的触发时间或角度来实现的,当晶体管的电源电压幅值有变化时。 该变化通过在单结晶体管的基极二极管和栅极控制的电流调节器的电极之间连接具有0.1至0.5微法之间的值的电容器来实现。

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