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81. 发明授权

US4041364A Electromagnetically shielded electrical converter and an improved electromagnetic shield therefor 失效
标题翻译：电磁屏蔽电气转换器和改进的电磁屏蔽
公开(公告)号：US4041364A
公开(公告)日：1977-08-09
申请号：US654740
申请日：1977-02-03
申请人： Harold A. Gauper, Jr.
发明人： Harold A. Gauper, Jr.
IPC分类号： H01F27/36 , H02M11/00 , H02M3/22
CPC分类号： H02M11/00 , H01F27/362
摘要： Electromagnetic interference shields are connected to electrical reference points from specially selected null or "center tap" connection points where noise voltages induced in the surface of the electromagnetic shield are substantially balanced out such that injection of such induced interference noise voltages to the connected reference points are substantially reduced. Special selection of isolated reference points for the input and output circuits as well as a special combination of electromagnetic interference shields substantially reduces the electromagnetic interference emanations from an electrical power supply circuit incorporating an inverter and transformer windings therewithin which normally constitute sources of unwanted electromagnetic interference signals unless suppressed.
摘要翻译：电磁干扰屏蔽层连接到特殊选择的空心或“中心抽头”连接点的电气参考点，其中在电磁屏蔽表面引起的噪声电压基本平衡，以便将这种感应干扰噪声电压注入连接的参考点大大减少。对输入和输出电路的隔离参考点的特殊选择以及电磁干扰屏蔽的特殊组合大大减少了从包含逆变器的电源电路和其中的变压器绕组的电力电源电路的电磁干扰发射，其中通常构成不需要的电磁干扰信号源除非被抑制。

82. 发明授权

US3947745A Variable voltage inverter 失效
标题翻译：变电压变频器
公开(公告)号：US3947745A
公开(公告)日：1976-03-30
申请号：US446659
申请日：1974-02-28
申请人： James E. Redmon
发明人： James E. Redmon
IPC分类号： H02M3/335 , H02M3/22
CPC分类号： H02M3/33507
摘要： A relaxation oscillator having a programmable unijunction transistor for producing an A.C. voltage. A variable portion of the A.C. voltage is selected and operates connected transistor amplifiers, which in turn cause an amplified A.C. voltage to be induced in a transformer. A voltage multiplier further increases the voltage and produces an output D.C. signal.
摘要翻译：具有用于产生交流电压的可编程单结晶体管的张弛振荡器。选择交流电压的可变部分，并操作连接的晶体管放大器，这又导致在变压器中感应放大的交流电压。电压倍增器进一步增加电压并产生输出直流信号。

83. 发明授权

US3842334A Oscillator circuit for providing a failsafe direct current voltage output in response to a periodic signal input 失效
标题翻译：用于向周期性信号输入提供失效直流电压输出的振荡器电路
公开(公告)号：US3842334A
公开(公告)日：1974-10-15
申请号：US35957273
申请日：1973-05-11
申请人： WESTINGHOUSE ELECTRIC CORP
发明人： FRANZ J
IPC分类号： B60L3/08 , B61L1/20 , G05B9/02 , H02M3/337 , H03G3/02 , H03K19/007 , H02M3/22
CPC分类号： H02M3/3378 , B61L1/20
摘要： An oscillator provides a signal output only in response to the detection of a provided periodic signal. The signal output of the oscillator is rectified to produce a failsafe energization signal for a load device such as a relay or the like.
摘要翻译：振荡器仅响应于所提供的周期信号的检测而提供信号输出。振荡器的信号输出被整流，以产生诸如继电器等的负载装置的故障保护通电信号。

84. 发明授权

US3732482A Two terminal network with negative impedance 失效
公开(公告)号：US3732482A
公开(公告)日：1973-05-08
申请号：US3732482D
申请日：1972-05-30
申请人： BBC BROWN BOVERI & CIE
发明人： MAREK A
IPC分类号： H03B7/06 , H03H11/44 , H03H11/52 , H03K3/353 , H04B3/18 , H02M3/22
CPC分类号： H04B3/18 , H03B7/06 , H03H11/44 , H03H11/52 , H03K3/353
摘要： The present negative impedance two terminal network is embodied by two three terminal amplifiers, for example, one of which is a field effect transistor and the other is a bi-polar transistor, wherein the emitter-collector circuit of the bi-polar transistor and the source-drain circuit of the field effect transistor are connected in series with each other. The two terminals of the network are formed by the base and by the collector of the bipolar transistor. Said collector is also connected to the gate terminal of the field effect transistor. A control voltage source is preferably connected between said base of the bi-polar transistor and the drain terminal of the field effect transistor, whereby said negative impedance is differentially adjustable by varying the control voltage.

85. 发明授权

US3673485A Dual oscillator charger-inverter circuit 失效
标题翻译：双振荡器充电器 - 逆变器电路
公开(公告)号：US3673485A
公开(公告)日：1972-06-27
申请号：US13559171
申请日：1971-04-20
申请人： PHOTRONIC INTERN ESTABLISHMENT
发明人： VITAL ZOLTAN , ORBAN JEAN
IPC分类号： H02J7/00 , H02J7/02 , H02M3/22
CPC分类号： H02J7/0091 , H02J7/022
摘要： In a system for supplying power to a load selectively from a rechargeable battery or from an external power source and for recharging the battery from such power source, a dual converter connectable between the battery, the load and the power source and including components forming a first converter for delivering power from the battery to the load and a second converter for converting the energy from the power source into oscillations and applying such oscillations for recharging the battery, the arrangement being composed of switch means for operatively connecting only one converter at a time, a single transformer core, and a plurality of winding wound on the core, with at least one of the winding being common to both converters.
摘要翻译：在用于从可充电电池或从外部电源选择性地向负载供电并且用于从所述电源对电池再充电的系统中，可以在电池，负载和电源之间连接的包括形成第一转换器，用于将电力从电池输送到负载;以及第二转换器，用于将来自电源的能量转换成振荡并施加这种振荡以对电池再充电，该装置由用于一次可操作地连接一个转换器的开关装置组成，单个变压器铁心和缠绕在所述铁芯上的多个绕组，所述绕组中的至少一个是两个转换器共用的。

86. 发明授权

US3659184A Analog signal to discrete time interval converter (asdtic) 失效
标题翻译：模拟信号到时间间隔转换器（ASDTIC）
公开(公告)号：US3659184A
公开(公告)日：1972-04-25
申请号：US3659184D
申请日：1970-02-11
申请人： NASA
发明人： SCHWARZ FRANCISC C
IPC分类号： H02M3/156 , H03F3/217 , H02M3/22
CPC分类号： H02M3/156 , H03F3/217
摘要： An electronic signal conversion device is disclosed. The concept of pulse modulation includes in the sense of this invention the process of sampling a source of electric energy by one or several switches, and the electronic function that controls this switch or switches; any utilization of averaging devices to smooth the ensuing pulses such as filters are excluded as part of this process, except that a filter may be inserted ahead of a lead to be energized. The device is particularly useful wherever conversion of analog signals to discrete time signal intervals for purpose of pulse modulation is required. However, the invention has general utility and is presently being used with specific power supplies in the space program and communication technology. In addition, the device lends itself to incorporate a reference source and feedback network as used with power amplifiers and direct current pulse modulated power converters. The device maintains its accuracy of expected operation notwithstanding variations in its component characteristics, variations of applied voltage waveforms and supply voltages.
摘要翻译：公开了一种电子信号转换装置。脉冲调制的概念在本发明的意义上包括通过一个或多个开关对电能源进行采样的过程以及控制该开关或开关的电子功能; 作为该处理的一部分，排除平均化装置以平滑随后的脉冲（例如滤波器）的任何利用，除了可以将滤波器插入到被激励的引线之前。无论何时需要将模拟信号转换为离散时间信号间隔，器件特别有用。然而，本发明具有一般用途，目前正在与空间程序和通信技术中的特定电源一起使用。此外，该器件还适用于与功率放大器和直流脉冲调制功率转换器一起使用的参考源和反馈网络。尽管其组件特性，施加的电压波形和电源电压的变化有变化，器件仍保持其预期操作的准确性。

87. 发明授权

US3619758A Dc voltage conversion apparatus 失效
标题翻译：直流电压转换装置
公开(公告)号：US3619758A
公开(公告)日：1971-11-09
申请号：US3619758D
申请日：1970-09-29
申请人： HONEYWELL INC
发明人： DERANIAN MINAS
IPC分类号： H02M3/158 , H02M3/22
CPC分类号： H02M3/1584 , Y10T307/593
摘要： A plurality of DC to DC converter circuits are coupled to respond to pulses occurring at substantially different points in time, each circuit producing a high level DC voltage from a low level DC voltage. The high level DC voltage from each of the converter circuits are coupled to a filter which provides a transient free waveform at an output terminal. The duty cycle provided for each of the converter circuits allows minimal size components to be used while obtaining a high power output.

88. 发明授权

US3588665A Transformer inverter 失效
标题翻译：变压器逆变器
公开(公告)号：US3588665A
公开(公告)日：1971-06-28
申请号：US3588665D
申请日：1969-04-03
申请人： WESTINGHOUSE ELECTRIC CORP
发明人： WILLARD FRANK G , SUTHERLAND JAMES F
IPC分类号： H02M3/338 , H02M7/5387 , H02M3/22
CPC分类号： H02M7/53871 , H02M3/3382
摘要： DESCRIBED IS A TRANSFORMER-TYPE VOLTAGE INVERTER, TYPICALLY USED AS A LOW DISSIPATION, HIGH CURRENT VOLTAGE REDUCER FOR IN-

TEGRATED CIRCUITS, WHICH EMPLOYS A SIMPLE TWO-WINDING TRANSFORMER AS A FEEDBACK AND TIMING MEANS.

89. 发明授权

US3582754A Direct-current converter with overload protection 失效
标题翻译：具有过载保护功能的直流电转换器
公开(公告)号：US3582754A
公开(公告)日：1971-06-01
申请号：US3582754D
申请日：1969-02-10
申请人： WANDEL & GOLTERMANN
发明人： HOFFMANN GUNTHER , BAUMANN HEINZ
IPC分类号： H02M3/338 , H02M7/5383 , H02M3/22 , H02P13/16 , H03B11/00
CPC分类号： H02M3/3382 , H02M7/53832 , Y02B70/1433 , Y02B70/1441
摘要： A pair of switching transistors, serially connected across a common DC source, have a junction returned to one of the source terminals through the primary of an output transformer in series with the primary of a control transformer and with a frequencyselective network which includes a blocking capacitor and discriminates against frequencies above a predetermined switching frequency established either by the network itself or by a tuned secondary circuit of the control transformer.

90. 发明授权

US3582753A Buffer circuit for decoupling system interference 失效
标题翻译：用于解除系统干扰的缓冲电路
公开(公告)号：US3582753A
公开(公告)日：1971-06-01
申请号：US3582753D
申请日：1969-01-28
申请人： BAILEY CONTROLE
发明人： LEJON JEAN C , HERJEAN MICHEL L
IPC分类号： G05B19/048 , H02M3/22
CPC分类号： G05B19/048 , G05B2219/24131
摘要： A transistorized input-output buffer magnetically coupled through a wall of a Faraday cage to isolate system components from field interference. The input buffer includes an oscillator circuit responsive to actuation of a process detector, a transformer having a primary winding connected to the oscillator output and a demodulator circuit within the cage having an input connected to the transformer secondary winding and an output connected to a digital processor. The output of the processor is connected to the output buffer which includes an oscillator circuit within the cage, a transformer having a primary winding connected to the oscillator output, and an amplifier connected to the transformer secondary winding for energizing actuators to control the process. The cores of the transformers for the input and output buffer circuits are positioned in an airgap formed in the wall of the Faraday cage in order to isolate the system components from electrostatic and electromagnetic interference.

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