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41. 发明授权

US4426615A Solid state electronic power switch 失效
标题翻译：固态电子电源开关
公开(公告)号：US4426615A
公开(公告)日：1984-01-17
申请号：US300489
申请日：1981-09-09
申请人： James R. Hannas
发明人： James R. Hannas
IPC分类号： H03K17/13 , H03K17/735 , G05B24/02 , G05F1/46
CPC分类号： H03K17/136 , H03K17/735
摘要： A solid state electronic power switch selectively controls power delivered to a load such as a fan. A momentary contact control switch is provided which is connected to a switching logic circuit whose output state changes when the control switch is activated. A plurality of power control circuits are connected in parallel with one another and in series with a load across a power source. Each of the power control circuits includes either an SCR or a triac element. A turn-on control circuit is provided connected to the SCR or triac for initial turn-on only when a voltage across the element is small compared to a peak-to-peak voltage across it prior to application of gate voltage. With the system of the invention, the load such as a fan can be operated at various discrete power levels without the associated mechanical and electrical noise problems of previous systems.
摘要翻译：固态电子电源开关选择性地控制输送到诸如风扇的负载的功率。提供瞬时接触控制开关，其连接到当控制开关被激活时其输出状态改变的开关逻辑电路。多个功率控制电路彼此并联并且跨过电源与负载串联连接。每个功率控制电路包括SCR或三端双向程序元件。提供连接到SCR或三端双向可控硅开关的导通控制电路，用于初始导通时，只有当元件之间的电压与施加栅极电压之前的峰值电压之间的峰值电压相比较小时。利用本发明的系统，诸如风扇的负载可以在各种离散功率水平下操作，而没有先前系统的相关的机械和电气噪声问题。

42. 发明授权

US4420694A Muting circuit 失效
标题翻译：静音电路
公开(公告)号：US4420694A
公开(公告)日：1983-12-13
申请号：US285839
申请日：1981-07-22
申请人： Teppei Yokota , Yoshiro Joichi
发明人： Teppei Yokota , Yoshiro Joichi
IPC分类号： H03G3/00 , H03G3/02 , H03G3/20 , H03G3/34 , H03K17/13 , H03K17/16 , H01H7/16
CPC分类号： H03G3/341 , H03G3/34 , Y10T307/858 , Y10T307/951
摘要： Disclosed is a muting circuit, in which the generation of click noise is prevented in that the muting operation is caused to occur at an instant when the instantaneous level (i.e., waveform level) of the input audio signal becomes zero for the first time since the appearance of a muting signal.
摘要翻译：公开了一种静音电路，其中防止产生点击噪声，因为在输入音频信号的瞬时电平（即，波形电平）自第一次变为零以来，使静音操作发生出现静音信号。

43. 发明授权

US4390795A A.C. Power control for inductive loads 失效
标题翻译：电感负载的功率控制
公开(公告)号：US4390795A
公开(公告)日：1983-06-28
申请号：US266804
申请日：1981-05-26
申请人： Reginald B. Tharrington
发明人： Reginald B. Tharrington
IPC分类号： H03K17/13 , G05F1/64 , H02P13/24
CPC分类号： H03K17/136 , Y10T307/977
摘要： An electronic switching system for inductive loads in A.C. circuits, comprising a triac switch in series with an inductive load such as transformer or motor, etc. across an A.C. voltage. The control voltage for the triac switch is provided by a smaller, lower power triac driver, which has a light emitting diode controlled by an optically isolated transistor. The optically isolated transistor is provided with electrical pulses each a half cycle of voltage by means of a zero crossing detector. Since it is impossible to know precisely what the power factor of the load is, the triggering of the triac driver is provided at zero voltage on both the upward and downward crossing. These pulses, amplified by the transistor, control the triac driver. The load current will lag the voltage by some angle, dependent on the power factor, and the current will stop at its zero point. The triac driver has its control voltage at the zero of voltage and, therefore, has a control ready to ignite the triac as soon as the current in the reverse direction passes to zero.
摘要翻译：一种用于交流电路中的感性负载的电子开关系统，包括与交流电压之类的诸如变压器或电动机等的感性负载串联的三端双向可控硅开关。三端双向可控硅开关的控制电压由较小的较低功率的三端双向可控硅驱动器提供，其具有由光隔离晶体管控制的发光二极管。光隔离晶体管通过零交叉检测器提供电脉冲，每个电压为半个电压周期。由于不可能准确地知道负载的功率因数，所以三端双向可控硅驱动器的触发在零向电压上都向上和向下交叉提供。由晶体管放大的这些脉冲控制三端双向可控硅驱动器。负载电流将根据功率因数将电压滞后一定角度，电流将停止在零点。三端双向可控硅开关驱动器的控制电压处于零电压，因此，一旦反向电流通过零，就可以控制点火三端双向可控硅开关。

44. 发明授权

US4297105A Automatic photometric titrator 失效
标题翻译：自动光度滴定仪
公开(公告)号：US4297105A
公开(公告)日：1981-10-27
申请号：US163701
申请日：1980-06-27
申请人： Ghyslain Dube
发明人： Ghyslain Dube
IPC分类号： G01N21/76 , H03K17/13 , H03K17/64 , G01N31/16
CPC分类号： G01N21/76 , H03K17/13 , H03K17/64
摘要： An alkaline-acid end point detector for titration reactions in which the phenomenon of chemiluminescence is used to detect the end point by monitoring, by means of an electronic light detector, the light output of the reaction materials in a light-tight vessel. The output from the detector is differentiated to detect the maximum output which corresponds to the reaction end point. The detector is useful in the determination of acid numbers in oils and greases.
摘要翻译：用于滴定反应的碱性酸终点检测器，其中使用化学发光现象来通过电子光检测器监测不透光容器中反应物质的光输出来检测终点。差分检测器的输出以检测对应于反应终点的最大输出。检测器可用于测定油和油脂中的酸值。

45. 发明授权

US4276486A Two terminal power control switch with triac current powered control means 失效
标题翻译：双端口电流供电控制装置的两端电源控制开关
公开(公告)号：US4276486A
公开(公告)日：1981-06-30
申请号：US12682
申请日：1979-02-16
申请人： Arjan D. Ahuja , James E. Brewer
发明人： Arjan D. Ahuja , James E. Brewer
IPC分类号： H03K17/13 , H03K17/60
CPC分类号： H03K17/136
摘要： A switching arrangement including a current switch for providing a low impedance electrical path therethrough in response to the application of triggering signals thereto, and for providing a high impedance electrical path in the absence of the triggering signals, is connected in an electrical path between a load and an AC voltage source. A control circuit is provided for applying triggering signals to the current switch when enabling power is applied thereto. A normally open switch provides enabling power derived from the AC voltage source to the control circuit when the normally open switch is closed. A normally closed switch provides enabling power derived from current which flows through the current switch to the control circuit when the normally closed switch is closed. Upon momentary closure of the normally open switch, the switching arrangement is turned on. Upon momentary opening of the normally closed switch, or upon the momentary interruption of the AC voltage supplied to the switching arrangement, the switching arrangement is turned off.
摘要翻译：一种开关装置，其包括用于响应于施加触发信号而提供其中的低阻抗电气路径的电流开关，以及用于在没有触发信号的情况下提供高阻抗电路径的电流开关连接在负载和交流电压源。提供控制电路，用于当使能电源时向触发信号施加触发信号。当常开开关闭合时，常开开关提供从AC电压源到控制电路的功率。当常闭开关闭合时，常闭开关提供从流过电流开关的电流导出到控制电路的使能功率。在常开的开关瞬间闭合时，开关装置被接通。在常闭开关瞬时打开时，或者当瞬时中断提供给开关装置的AC电压时，切换装置被关闭。

46. 发明授权

US4161022A Controllable rectifier circuit for a power supply 失效
标题翻译：电源可控整流电路
公开(公告)号：US4161022A
公开(公告)日：1979-07-10
申请号：US931765
申请日：1978-08-07
申请人： Kenichi Kanazawa , Nobuyuki Takahashi
发明人： Kenichi Kanazawa , Nobuyuki Takahashi
IPC分类号： H02M1/08 , H02M7/12 , H02M7/162 , H03K17/13 , H05B6/06 , H05B6/12 , H02M7/155
CPC分类号： H05B6/062 , H02M1/083 , H02M7/1626 , H03K17/136
摘要： A controllable rectifier circuit which may be used in a power supply selectively produces a half-wave or a full-wave rectified signal. The rectifier circuit includes a pair of input terminals for receiving an AC signal and a bridge rectifier coupled to the input terminals and including a pair of output terminals across which a rectified AC signal is produced. The bridge rectifier comprises a first current path including a switchable rectifier for conducting positive half cycles of the AC signal and a second current path including a switchable rectifier for conducting negative half cycles of the AC signal. A pulse generator is supplied with reduced amplitude versions of the positive and negative half cycles of the AC signal, in sequence, to produce an output pulse when the reduced amplitude of the half cycle supplied thereto is less than a predetermined level. A non-reduced half cycle of the AC signal is selectively supplied to the pulse generator to prevent the pulse generator from generating an output pulse during that half cycle so that an output pulse is generated only during the beginning and ending portions of the other half cycle. The generated output pulses are supplied to each of the switchable rectifiers, whereby the bridge rectifier rectifies both half cycles of the AC signal when the non-reduced half cycle is not supplied to the pulse generator, and the bridge rectifier rectifies only the other half cycle of the AC signal when the non-reduced half cycle is supplied to the pulse generator.
摘要翻译：可用于电源的可控整流电路选择性地产生半波或全波整流信号。整流电路包括用于接收AC信号的一对输入端和耦合到输入端的桥式整流器，并且包括一对输出端，跨过整流的交流信号产生一对。桥式整流器包括第一电流路径，其包括用于传导AC信号的正半周期的可切换整流器和包括用于传导AC信号的负半周期的可切换整流器的第二电流路径。脉冲发生器按照顺序提供交流信号的正半周期和负半周期的减小幅度版本，以便当提供给其的半周期的减小的幅度小于预定电平时产生输出脉冲。交流信号的非减速半周期被选择性地提供给脉冲发生器，以防止脉冲发生器在该半周期期间产生输出脉冲，使得仅在另一个半周期的开始和结束部分期间产生输出脉冲。所产生的输出脉冲被提供给每个可切换整流器，由此当非减速半周期不提供给脉冲发生器时，桥式整流器对AC信号的两个周期进行整流，并且桥式整流器仅对另一半周期进行整流的非减速半周期被提供给脉冲发生器。

47. 发明授权

US3956644A Integral cycle, precise zero voltage switch 失效
标题翻译：积分循环，精密零电压开关
公开(公告)号：US3956644A
公开(公告)日：1976-05-11
申请号：US513719
申请日：1974-10-10
申请人： Bhagvantrao G. Zambre
发明人： Bhagvantrao G. Zambre
IPC分类号： H03K17/13 , H03K17/79 , H03K17/06 , H03K5/153
CPC分类号： H03K17/79 , H03K17/136 , Y10S323/902
摘要： Alternating current from a source is supplied to a load through a thyristor whose gate electrode is controlled by the output from a zero voltage switch. The zero voltage switch is enabled by the output of a flip-flop beginning at the simultaneous occurrence of a command input and a clock signal input to the flip-flop. The clock signal input is generated just before the beginning of each half cycle of a predetermined polarity of the alternating current so that integral cycling is achieved without delayed switching which would produce current spikes.
摘要翻译：来自源极的交流电流通过其栅电极由零电压开关的输出控制的晶闸管供应给负载。零电压开关由触发器的输出使能，开始于同时发生命令输入和输入到触发器的时钟信号。在交流电的预定极性的每个半周期的开始之前产生时钟信号输入，从而实现不产生电流尖峰的延迟开关的积分循环。

48. 发明授权

US3955104A Synchronous control device for a static relay by a high frequency signal 失效
标题翻译：高频信号用于静态继电器的同步控制装置
公开(公告)号：US3955104A
公开(公告)日：1976-05-04
申请号：US525111
申请日：1974-11-19
申请人： Guy H. Dumas
发明人： Guy H. Dumas
IPC分类号： H03K17/13 , H03K17/60
CPC分类号： H03K17/136
摘要： This invention relates to a synchronous device for a static relay by a high frequency signal.According to this invention, a high frequency alternating signal source is serially connected with a diode between the anode a and the gate g of a thyristor, the main terminals a and b of which are connected to the terminals of a charge and supply circuit. The thyristor can be triggered only when the voltage between these terminals is lower than a threshold value and control signal is provided for high frequency source. The invention also provides for high frequency synchronous control methods for bidirectional devices.The invention is applicable to a very simple and cheap control system of static relays.
摘要翻译：本发明涉及一种高频信号用于静态继电器的同步装置。

49. 发明授权

US3887000A Control system comprising differential amplifier with dual current comparator having two outputs separated by a deadband 失效
标题翻译：具有双电流比较器的差分放大器的控制系统具有两个分离器的输出
公开(公告)号：US3887000A
公开(公告)日：1975-06-03
申请号：US44540574
申请日：1974-02-25
申请人： HONEYWELL INC
发明人： PINCKAERS B HUBERT
IPC分类号： G05D23/24 , G06G7/25 , H03K17/13 , C05B11/00
CPC分类号： H03K17/136 , G05D23/1906 , G05D23/1912 , G05D23/24 , G06G7/25
摘要： A condition responsive circuit, disclosed as an automatic changeover heat-cool solid state thermostat, is adapted to be connected by three terminals to one or the other alternating current load and to a source of alternating current potential. The solid state condition responsive system uses an improved differential amplifier with dual current comparators and has two outputs separated by a deadband. The differential amplifier and the two current comparators control the firing of a silicon controlled rectifier in the first or second outputs when there is a need to energize one or the other load. The AC supply voltage to the condition responsive system amplifier and current comparators is shorted out early in each half cycle by a four layer diode across the input of the condition responsive circuit. This arrangement allows for switching to a relatively high impedance within the condition responsive circuit to virtually eliminate the power dissipation therein except during the initial portion of each applied waveform and thus also insure that switching of the silicon controlled rectifiers and triacs only occurs near the voltage crossover of the alternating current supply.

50. 发明授权

US3870848A Making of connections in electrical power distribution systems 失效
标题翻译：在配电系统中建立连接
公开(公告)号：US3870848A
公开(公告)日：1975-03-11
申请号：US27795172
申请日：1972-08-04
申请人： ELECTRICITY COUNCIL
发明人： NAYBOUR ROBERT DOUGLAS , FARRELL TREVOR , ROBERTS WILLIAM ELWYN
IPC分类号： H01R43/02 , H03K17/13 , H05B1/00
CPC分类号： H03K17/136 , H01R43/02
摘要： An electrical connection in an alternating current mains power supply system is fritted by connecting a unit to the conductors on the side of the joint remote from the supply source, which unit contains a thyristor and a control circuit for connecting the thyristor across the supply to draw a current of at least 1000 amperes for half a cycle. The current is typically 2,000 amperes. Such a current will not affect the supply system, e.g. by causing protective circuit breakers to open, because of its very short duration but serves to frit a mechanical joint, making it a low impedance.
摘要翻译：在交流电源电源系统中的电气连接通过将单元连接到远离供电源的接头侧的导体，该单元包含晶闸管和用于将晶闸管连接到电源以绘制的控制电路至少1000安培的电流半个周期。电流通常为2000安培。这样的电流不会影响供应系统，例如通过使保护断路器打开，因为其非常短的持续时间，但用于熔接机械接头，使其成为低阻抗。

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