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51. 发明授权

US3825852A 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：US3825852A
公开(公告)日：1974-07-23
申请号：US29539872
申请日：1972-10-05
申请人： HONEYWELL INC
发明人： PINCKAERS B
IPC分类号： G05F1/45 , G05B11/18 , G05D23/24 , H03K17/13 , H03F3/68
CPC分类号： H03K17/136 , G05D23/1906 , G05D23/24
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 insures that switching of the silicon controlled rectifiers and triacs only occurs near the voltage crossover of the alternating current supply.
摘要翻译：作为自动转换热冷固体恒温器公开的条件响应电路适于通过三个端子连接到一个或另一个交流负载和交流电源。固态状态响应系统使用具有双电流比较器的改进的差分放大器，并具有由死区分开的两个输出。当需要为一个或另一个负载通电时，差分放大器和两个电流比较器控制第一或第二输出中的可控硅整流器的点火。状态响应系统放大器和电流比较器的交流电源电压在每个半周期的早期通过状态响应电路输入端的四层二极管短路。这种布置允许在状态响应电路内切换到相对较高的阻抗，以实际消除其中的功率消耗，除了在每个施加的波形的初始部分之外，并且因此也确保只有在电压交叉附近才发生硅控整流器和三端双向可控硅开关元件的切换的交流电源。

52. 发明授权

US3801832A Solid-state relay 失效
标题翻译：固态继电器
公开(公告)号：US3801832A
公开(公告)日：1974-04-02
申请号：US3801832D
申请日：1970-04-29
申请人： PHILIPS CORP
发明人： JOYCE M
IPC分类号： H03K17/13 , H03K17/56 , H03K17/785 , H03K17/79 , H03K17/72
CPC分类号： H03K17/56 , H03K17/136 , H03K17/785 , H03K17/79
摘要： A solid-state relay comprising, in place of the coil of an ordinary relay, an electronic circuit including an energy-storage reactive element and a solid-state negative resistance component connected to the reactive element and having a negative resistance or a breakdown or break-over characteristic. In place of the metallic contacts of an ordinary relay, this invention includes solid-state means having a relatively high impedance condition and a condition of relatively low, or substantially zero, impedance. Coupling means, which may include inductive elements, light-emissive and light-sensitive elements, crystals, or other energy transmission elements, connect the ''''coil'''' part of the circuit to the ''''contact'''' part while providing electrical isolation between the two parts.
摘要翻译：一种固态继电器，其代替普通继电器的线圈，包括连接到电抗元件并具有负电阻或击穿或断开的能量存储电抗元件和固态负电阻元件的电子电路 - 特征本发明代替普通继电器的金属触点，包括具有相对较高阻抗条件和相对低或基本为零阻抗的条件的固态装置。可以包括感应元件，发光和光敏元件，晶体或其他能量传输元件的耦合装置将电路的“线圈”部分连接到“接触”部分，同时在两部分之间提供电隔离。

53. 发明授权

US3708696A Zero voltage switch means for control of electric load circuit 失效
标题翻译：零电压开关装置用于控制电力负载电路
公开(公告)号：US3708696A
公开(公告)日：1973-01-02
申请号：US3708696D
申请日：1971-01-28
申请人： RANCO INC
发明人： LORENZ J
IPC分类号： G05D23/24 , H03K17/13 , H03K17/56
CPC分类号： H03K17/136 , G05D23/1909 , G05D23/1927 , G05D23/24
摘要： Four forms of the invention are shown and each comprises a zero voltage switching means for an AC electric load circuit having gate controlled semiconductors which are triggered in response to voltages in a condition sensitive bridge network connected in the AC power source for the load circuit. The network is shunted out of the power source circuit upon changes in power source voltage from zero in power source half cycles applied to the network whereby the components of the network are subjected only to relatively low voltages and during a brief portion of the half cycle. In one form of the invention, a resistance in the bridge network is heated in response to energization of the load circuit and tends to cause cycling of the switching means for accurate control of the load.
摘要翻译：示出了本发明的四种形式，并且每个都包括用于具有门控半导体的AC电负载电路的零电压开关装置，其响应于连接在用于负载电路的AC电源中的状态敏感的桥接网络中的电压而被触发。当施加到网络的电源半周期中电源电压从零开始变化时，网络被分流出电源电路，由此网络的组件仅经受相对低的电压并且在半周期的短暂部分期间。在本发明的一种形式中，响应于负载电路的通电，桥接网络中的电阻被加热，并且倾向于引起开关装置的循环以精确地控制负载。

54. 发明授权

US3671780A Control circuits 失效
标题翻译：控制电路
公开(公告)号：US3671780A
公开(公告)日：1972-06-20
申请号：US3671780D
申请日：1969-11-24
申请人： HEINEMANN ELECTRIC CO
发明人： LEFFERTS PETER
IPC分类号： G05D9/12 , H03K17/13 , H03K17/00
CPC分类号： H03K17/136 , G05D9/12
摘要： Circuits for generating a control pulse in response to a change in an external condition, by charging a capacitor from a pulsating direct current source over a substantial part of the source pulsation and discharging the capacitor rapidly near the zero crossover point of the pulsation. Subsequently the control pulse is applied to a power switching device, in particular the cathode terminal of a controlled rectifier.
摘要翻译：用于通过在源脉动的大部分上从脉动直流源对电容器充电并且在脉动的零交叉点附近快速放电电容器来产生响应于外部条件变化的控制脉冲的电路。随后，将控制脉冲施加到功率开关装置，特别是受控整流器的阴极端子。

55. 发明授权

US3668422A Synchronous switching circuit 失效
标题翻译：同步切换电路
公开(公告)号：US3668422A
公开(公告)日：1972-06-06
申请号：US3668422D
申请日：1970-09-28
申请人： GRIGSBY BARTON INC
发明人： PASCENTE JOSEPH E
IPC分类号： H02M1/08 , H03K17/13 , H01H9/56
CPC分类号： H03K17/136 , H02M1/083
摘要： Switching circuits for controlling the application of an A.C. source to a load employ a zero voltage crossing detector for selectively triggering a control thyristor at a zero voltage crossing of the source and means for supplying a continuous latch current to the gate of the control thyristor during succeeding cycles of the A.C. source. The control thyristor is employed to latch a switching thyristor which, in turn, applies the power from the A.C. source to the load.
摘要翻译：用于控制将AC源施加到负载的开关电路采用零电压交叉检测器，用于选择性地触发源极的零电压交叉处的控制晶闸管，以及用于在后续期间向控制晶闸管的栅极提供连续锁存电流的装置交流电源的周期。控制晶闸管用于锁存开关晶闸管，开关晶闸管又将来自交流电源的功率施加到负载。

56. 发明授权

US3665212A Zero crossing solid state switch 失效
标题翻译：零交叉固态开关
公开(公告)号：US3665212A
公开(公告)日：1972-05-23
申请号：US3665212D
申请日：1970-11-24
申请人： SPERRY RAND CORP
发明人： ROBERTS ARTHUR S , CRAIG ORLYN W
IPC分类号： H03K17/13 , H03K17/00
CPC分类号： H03K17/136
摘要： There is disclosed herein a solid state switch for use with the application of a. c. power to a load circuit to eliminate high surge currents and transients that normally occur when switching line voltage to a load. The initial application of full a. c. power to a load circuit is restricted to the next time that the voltage waveform goes through the zero. During the initial application of power before the voltage goes through zero, the load circuit is protected by control circuitry including a surge resistor.

57. 发明授权

US3648075A Zero voltage switching ac relay circuit 失效
标题翻译：零电压开关交流继电器电路
公开(公告)号：US3648075A
公开(公告)日：1972-03-07
申请号：US3648075D
申请日：1970-06-01
申请人： TELEDYNE INC
发明人： MANKOVITZ ROY J
IPC分类号： H03K17/13 , H03K17/00
CPC分类号： H03K17/136
摘要： An AC relay circuit is disclosed which includes a triac as its active switch element. A full wave rectifier is connected between one of the primary terminals and the gate terminal of the triac. A control switch is provided between the load terminals of the rectifier. First control means are provided which are responsive to an input control signal for closing the control switch, thereby triggering the triac into conduction. Second control means are provided for rendering the control switch nonresponsive to the first control means whenever the magnitude of the AC voltage to be controlled exceeds a predetermined value.
摘要翻译：公开了一种AC继电器电路，其包括三端双向可控硅开关元件作为其有源开关元件全波整流器连接在三端双向可控硅开关元件的一个端子和栅极端子之间。在整流器的负载端子之间设置控制开关。提供响应于用于闭合控制开关的输入控制信号的第一控制装置，从而触发三端双向可控硅开关导通。提供第二控制装置，用于使控制开关对于第一控制装置无响应，只要要控制的交流电压的大小超过预定值即可。

58. 发明授权

US3621373A Transient-free solid-state power contactor 失效
标题翻译：无瞬态固态电源接触器
公开(公告)号：US3621373A
公开(公告)日：1971-11-16
申请号：US3621373D
申请日：1970-11-23
申请人： COLLINS RADIO CO
发明人： MITCHELL DANIEL M , MEHTA CHANDRAKANT
IPC分类号： H02M1/08 , H03K17/13 , H03K17/723 , G05F3/00
CPC分类号： H02M1/083 , H03K17/136 , H03K17/723 , Y10S323/901
摘要： A solid-state alternating current power contactor employs silicon controlled rectifier switching elements to attain a ramp turn on by gradually increasing the rectifier conduction angle. Turnoff is effected during zero crossover. Thus transient problems associated with steplike turn on and high current turnoff are obviated.

59. 发明授权

US3590275A Control circuits 失效
公开(公告)号：US3590275A
公开(公告)日：1971-06-29
申请号：US3590275D
申请日：1968-10-11
申请人： RCA CORP
发明人： FISHER MICHAEL S
IPC分类号： H02M5/257 , H03K17/13 , H03K17/72 , H03K5/20 , H03K17/00
CPC分类号： H02M5/2573 , H03K17/136 , H03K17/72
摘要： Two transistors, connected in cascade, are arranged to prevent the appearance of an output pulse from a control circuit during positive and negative half cycles of an AC signal source, while permitting the appearance of an output pulse at the zero crossovers of the signal source.

60. 发明授权

US3584238A Full cycle control system 失效
标题翻译：全循环控制系统
公开(公告)号：US3584238A
公开(公告)日：1971-06-08
申请号：US3584238D
申请日：1968-10-24
申请人： HUBBELL INC HARVEY
发明人： PURLAND DONALD A
IPC分类号： G05F1/445 , H03K17/13 , H03K1/18
CPC分类号： G05F1/445 , H03K17/136
摘要： An electronic control system for variably phase regulating or controlling the application of electrical energy to a connected load. The control system uses a unijunction transistor as a pulse generator which has its output connected to a pulse transformer circuit which, in turn, is connected to phase-regulated switch devices such as thyristors or silicon-controlled rectifiers (SCR). The phase-regulated switch devices are connected to the load to be controlled and operate to provide energy to said load during the ''''on time'''' thereof. The unijunction generator is caused to fire at predetermined cyclic intervals to provide ''''full cycle'''' power control to the connected load. The control system has circuit control means which controls the operation of the unijunction generator and assures that when the generator is fired or ''''turned on'''' it will be for a period longer than one-half cycle of the frequency of the power source to thereby provide and guarantee ''''full cycle'''' power control. The electronic control system may be utilized to regulate the application of electrical energy in alternating current, single or multiple phase loads. The unijunction transistor generator is controllably operated by circuit means which generates a firing signal which is the additive combination of an initiating signal and a synchronizing signal. The initiating signal is the signal which indicates that the load requires additional power and the synchronizing signal is generated by the source of energy to which the load is connected.

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