公开(公告)号：US5365157A

公开(公告)日：1994-11-15

申请号：US178779

申请日：1994-01-07

申请人： Alexander Geller ,  Steven Abdelqader

发明人： Alexander Geller ,  Steven Abdelqader

IPC分类号： G05F1/45 ,  G05F1/10 ,  G05F1/40 ,  G05F1/455

CPC分类号： G05F1/452

摘要： An alternating current voltage regulator providing a stable RMS output voltage across a load. The voltage applied to the load being determined by controlling the firing angle of a triac, which is controlled by the pulse width of a timing signal generated in a timer circuit. The pulse width of the timing signal is controlled by an error signal. The error signal is based upon the actual triac output voltage as compared with a comparison signal. The voltage delivered to the load is compared with a RMS reference voltage to produce the comparison signal. The potential difference between the output voltage and the comparison signal is constantly monitored to produce the error signal. The error signal is thus constantly applied to vary the pulse width of the timing signal and thus vary the firing angle of the triac in accordance with the deviation of the actual output voltage from the stable RMS reference voltage. By constantly varying the firing angle of the triac with regards to deviations from the stable RMS reference voltage, the triac output is constantly adjusted to produce an output voltage substantially equal to the RMS reference voltage.

摘要翻译： 交流电压调节器，通过负载提供稳定的RMS输出电压。 通过控制由定时器电路中产生的定时信号的脉冲宽度来控制三端双向可控硅开关的触发角来确定施加到负载的电压。 定时信号的脉冲宽度由误差信号控制。 与比较信号相比，误差信号基于实际的双向可控硅输出电压。 将传送到负载的电压与RMS参考电压进行比较以产生比较信号。 不断地监视输出电压和比较信号之间的电位差，产生误差信号。 误差信号因此不断地被施加以改变定时信号的脉冲宽度，从而根据实际的输出电压与稳定的RMS参考电压的偏差来改变三端双向可控硅开关的触发角。 通过不断改变三端双向可控硅开关的触发角度，偏离稳定的RMS参考电压，三端双向可控硅开关量输出不断调节，以产生基本上等于RMS参考电压的输出电压。

公开(公告)号：US4825140A

公开(公告)日：1989-04-25

申请号：US189730

申请日：1988-05-03

申请人： Raymond F. St. Louis

发明人： Raymond F. St. Louis

IPC分类号： B23Q11/00 ,  G05F1/45 ,  G05F1/455

CPC分类号： G05F1/452 ,  B23Q11/0042 ,  Y02P70/171 ,  Y10S323/908

摘要： A power controller having first and second power outlets, connections between one side of an A.C. line to one side of each outlet, a current sensing impedance connected between the other side of the A.C. line and the other side of the first power outlet, a triac connected between the other side of the A.C. line and the other side of the second power outlet, a first operational amplifier normally maintaining the triac in a non-conductive condition and a second operational amplifier to cause current to flow through the triac to the second power outlet after a selected time delay whenever an appliance such as a power tool that is coupled to the first power outlet draws a given amount of current through the sensing impedance.

摘要翻译： 具有第一和第二电源插座的电力控制器，AC线的一侧与每个出口的一侧之间的连接，连接在AC线的另一侧和第一电源插座的另一侧之间的电流感测阻抗，三端双向可控硅 连接在AC线的另一侧和第二电源插座的另一侧之间，通常将三端双向可控硅开关元件保持在非导通状态的第一运算放大器和第二运算放大器，以使电流流过三端双向可控硅开关至第二功率 每当诸如联接到第一电源插座的电动工具的设备通过感测阻抗吸取给定量的电流时，在选定的时间延迟之后出口。

公开(公告)号：US4256951A

公开(公告)日：1981-03-17

申请号：US8360

申请日：1979-02-01

申请人： Thomas R. Payne ,  Alfred L. Baker

发明人： Thomas R. Payne ,  Alfred L. Baker

IPC分类号： G05D23/24 ,  G05F1/10 ,  G05F1/45 ,  H02M5/257 ,  H05B3/00 ,  H05B1/02

CPC分类号： G05F1/452 ,  H02M5/2576 ,  H02M2005/2937 ,  Y10T307/461 ,  Y10T307/477

摘要： A power control system is disclosed for controlling the power output of a resistive heater element in response to operator selected power level settings by varying the rate at which a power pulse of constant duration is applied to the element. The system includes circuitry for generating a control signal representing a selected power output for the element, circuitry for identifying recurring patterns of a binary counter, the patterns recurring at different rates, and a logic arrangement for uniquely associating each of the patterns with a selected power setting. The binary counter and the power pulse control are synchronized with the power supply to trigger a power switching device at or near zero crossovers of the supply.

摘要翻译： 公开了一种功率控制系统，用于响应于操作者选择的功率电平设置，通过改变将恒定持续时间的功率脉冲施加到元件的速率来控制电阻加热器元件的功率输出。 该系统包括用于产生表示元件的选定功率输出的控制信号的电路，用于识别二进制计数器的循环模式的电路，以不同速率重复出现的模式，以及用于将每个模式与所选功率唯一地相关联的逻辑布置 设置。 二进制计数器和功率脉冲控制与电源同步，以在电源的零交叉点处或接近电源开关器件触发。

公开(公告)号：US3651753A

公开(公告)日：1972-03-28

申请号：US3651753D

申请日：1970-09-17

申请人： INTERTRADE WARENVERKEHRSGESELL

发明人： SCHMIDT WALTER

IPC分类号： A47J27/00 ,  A47J27/62 ,  A47J39/02 ,  G05F1/45 ,  H02M1/08 ,  H05B3/00 ,  H05B7/00

CPC分类号： H05B3/0023 ,  A47J27/62 ,  G05F1/452 ,  H02M1/083 ,  H05B3/0004

摘要： An electric cooker for the direct heating of food by the passage of alternating current therethrough has a two-way electronic valve, triggered at the beginning of each half-cycle of its power supply, connected in series therewith. A control voltage derived from a series resistor, varying with the magnitude of the load current, blocks the trigger circuit of the valve during halfcycles of a given polarity whenever the current exceeds a predetermined threshold, the trigger circuit being unswitchable during half-cycles of the opposite polarity so that only complete cycles are suppressed in the case of overload.

摘要翻译： 用于通过交流电流直接加热食物的电饭煲具有与其电源连接的电源的每个半周期开始时触发的双向电子阀。 从串联电阻得到的控制电压随着负载电流的大小而变化，只要电流超过预定阈值，就会在给定极性的半个周期内阻止阀的触发电路，触发电路在半周期内不可切换 具有相反的极性，使得在过载的情况下仅抑制完整的周期。

公开(公告)号：US3590278A

公开(公告)日：1971-06-29

申请号：US3590278D

申请日：1969-09-15

申请人： SQUARE D CO

发明人： BURG DENNIS ,  DEER BROWN

IPC分类号： G05F1/45 ,  H02M5/257 ,  H03K17/00 ,  H03K17/26

CPC分类号： H02M5/2573 ,  G05F1/452

摘要： A circuit for controlling the duration and intensity of current flow through a resistive load, such as a heat sealing element in a plastic bag sealing apparatus. The circuit includes an inexpensive circuit for synchronizing the initiation of conduction of a triac or silicon-controlled rectifier with reversals in polarity of an alternating voltage source so that the load is supplied with a series of pulses of current each having the same magnitude and a circuit which is controlled by the synchronizing circuit and uses the reversals in flux in a transformer to decrease the duration of firing current pulses to a control electrode of the triac or silicon-controlled rectifier from a discharging capacitor.

公开(公告)号：US3417320A

公开(公告)日：1968-12-17

申请号：US3417320D

申请人： SPRAGUE ELECTRIC CO

发明人： MUSKOVAC NICHOLAS G

IPC分类号： G05D23/24 ,  G05F1/45 ,  H02M1/08

CPC分类号： H02M1/083 ,  G05D23/1906 ,  G05D23/24 ,  G05F1/452

公开(公告)号：US4227029A

公开(公告)日：1980-10-07

申请号：US905586

申请日：1978-05-15

申请人： James R. Joseph

发明人： James R. Joseph

IPC分类号： G05F1/45 ,  H02M7/48 ,  H05B3/00 ,  C03B5/02 ,  G05F1/44

CPC分类号： H02M7/48 ,  G05F1/452 ,  H05B3/0023 ,  H02M2007/4803

摘要： A method and apparatus for controlling the supply of alternating electrical power to the electrodes of an electrical glass melting furnace in a manner eliminating or significantly minimizing any d.c. component. Reverse-poled controlled rectifiers are connected between an a.c. source and the electrodes to provide successive periods of alternating electricity to the electrodes, and the firing or gating of the rectifiers is controlled by a circuit in a manner causing each succeeding period of alternating electricity supplied to the electrodes to begin with a polarity opposite that of the alternating electricity supplied during the immediately preceding period. Any d.c. component will be cancelled to zero when averaged over two adjacent periods.

摘要翻译： 一种用于控制向电玻璃熔炉的电极供应交流电力的方法和装置，其方式是消除或显着地最小化任何直流电。 零件。 反极控制整流器连接在一个交流电 源极和电极，以向电极提供交替电力的连续周期，并且整流器的点火或门控由电路控制，以使得提供给电极的交替电的每个后续周期以与 在紧接前一个时期提供的交流电。 任何d.c. 当两个相邻周期的平均时，分量将被取消为零。

公开(公告)号：US3961236A

公开(公告)日：1976-06-01

申请号：US547932

申请日：1975-02-07

申请人： Victor Rodek ,  Thomas B. Michaels

发明人： Victor Rodek ,  Thomas B. Michaels

IPC分类号： G03G15/20 ,  G05F1/45 ,  G05F1/44

CPC分类号： G05F1/452 ,  G03G15/2003

摘要： A constant power regulator for a xerographic fuser in which power control is achieved by taking the sum of the load voltage and current. The regulator includes an operational amplifier connected as a voltage adding circuit. The operational circuit amplifier of the power regulator adds the voltage drop across the fuser and a reference resistor connected in series with the fuser and the voltage drop across the fixed reference resistance which represents the current flow through the fuser. The output of this summing circuit is detected by a photodetector that electrically isolates the power regulator from a voltage regulator which has an output for controlling the power supply to the fuser through, for example, a triac, controlled as a function of the power supply signal and the detected voltage generated by the power regulating circuit.

摘要翻译： 用于静电照相定影器的恒功率调节器，其中通过取负载电压和电流之和来实现功率控制。 调节器包括连接作为电压增加电路的运算放大器。 功率调节器的运算电路放大器增加了熔断器上的电压降和与定影器串联的参考电阻以及固定参考电阻上的电压降，这表示通过定影器的电流。 该求和电路的输出由光电检测器检测，光电检测器将功率调节器与电压调节器电隔离，电压调节器具有用于通过例如作为电源信号的函数控制的三端双向可控硅开关来控制到定影器的电源的输出 以及由功率调节电路产生的检测电压。

公开(公告)号：US3751635A

公开(公告)日：1973-08-07

申请号：US3751635D

申请日：1972-02-22

申请人： NIEHAUS W

发明人： NIEHAUS W

IPC分类号： G05D23/24 ,  G05F1/45 ,  H02M1/08 ,  H05B1/02

CPC分类号： G05F1/452 ,  G05D23/1912 ,  G05D23/24 ,  H02M1/083

摘要： The invention relates to a temperature control circuit for a device, such as an oven, a cooker or a washing machine, including a triac which is controlled by a temperature sensor connected in a bridge circuit, a second bridge circuit and an amplifier stage being provided by means of which three-stage control is obtained and the triac is always controlled during the passages through zero of the supply voltage. When the temperature is too high no power is supplied to a heating element, when the temperature is too low the full power is supplied, and near the desired temperature one half of the power is supplied.

摘要翻译： 本发明涉及一种用于诸如烤箱，炊具或洗衣机的装置的温度控制电路，包括由连接在桥式电路中的温度传感器控制的三端双向可控硅开关元件，第二桥式电路和放大级级 通过其获得三级控制，并且在通过电源电压的零通过期间总是控制三端双向可控制开关。 当温度太高时，没有电力供给到加热元件，当温度太低时，提供全功率，并​​且在所需温度附近提供一半的功率。

公开(公告)号：US3749884A

公开(公告)日：1973-07-31

申请号：US3749884D

申请日：1971-12-17

申请人： KALLE AG

发明人： SIMON K ,  DETMANN W ,  MEID G

IPC分类号： G05D23/24 ,  G05F1/45 ,  H05B1/02

CPC分类号： G05F1/452 ,  G05D23/1913 ,  G05D23/24

摘要： The specification discloses an alternating current regulating means, for use for example in a temperature control system, by means of which an alternating current flowing in a load circuit is controlled in an ON/OFF manner in response to and in accordance with a small DC control signal such as may be provided, for example, by a process computer. The regulating means includes a semi-conductor switching means controlled by a control means which is responsive to a converted DC control signal obtained from a signal convertor which provides electrical isolation between the DC control signal source and the switching means. The control means is also controlled so that the switching means is rendered conductive only when the AC supply voltage is of substantially zero value, and so that only an even number of half-cycles of current is passed. The DC control signal may be of analogue or digital form, and may be provided in the latter case by electrical relay contacts.

摘要翻译： 本说明书公开了一种用于例如在温度控制系统中使用的交流调节装置，通过该交流电流调节装置，响应于并根据小DC控制将负载电路中流动的交流电流以ON / OFF方式进行控制 信号例如可以由处理计算机提供。