Switching power supply
    2.
    发明授权
    Switching power supply 失效
    开关电源

    公开(公告)号:US5349523A

    公开(公告)日:1994-09-20

    申请号:US47226

    申请日:1993-04-14

    CPC分类号: H02M3/33515

    摘要: A switching power supply comprising a converting circuit; an analog-to-digital converter for converting a signal referring to an output signal from the converting circuit into digital form; a parallel-to-series converter for converting a bit train signal containing the output signal from the analog-to-digital converter into a pulse train; an isolation means for transmitting the pulse train to the primary winding of a transformer while concurrently electrically isolating the pulse train; a series-to-parallel converter for demodulating the pulse train into a parallel signal; and a control circuit. The converting circuit has a switching device which turns ON and OFF the voltage applied across the primary winding. The converting circuit provides rectification and smoothing of voltage induced in the secondary winding of the transformer, and supplies an output DC voltage to a load. The control circuit calculates control output for regulating the output voltage from the converting circuit which is received also by the series-to-parallel converter, to a given voltage. The control circuit further acts to produce an output signal which turns ON and OFF the switching device.

    摘要翻译: 一种开关电源,包括转换电路; 模数转换器,用于将来自转换电路的输出信号的信号转换为数字形式; 并行到串联转换器,用于将包含来自模数转换器的输出信号的位串信号转换成脉冲串; 隔离装置,用于将脉冲串发送到变压器的初级绕组,同时电隔离脉冲串; 用于将脉冲串解调为并行信号的串并联转换器; 和控制电路。 转换电路具有开关装置,其接通和断开施加在初级绕组两端的电压。 转换电路对变压器次级绕组感应的电压进行整流和平滑处理,并向负载提供输出直流电压。 控制电路将控制输出用于将来自串并联变换器的转换电路的输出电压调整为规定的电压。 控制电路还用于产生导通和断开开关装置的输出信号。

    Optical communication system
    3.
    发明授权
    Optical communication system 失效
    光通信系统

    公开(公告)号:US4783851A

    公开(公告)日:1988-11-08

    申请号:US692684

    申请日:1985-01-18

    摘要: The optical communication system of the invention comprises an optical transmission line, optical coupling devices, each having a varying coupling ratio, connected to the transmission line, and stations connected to the optical coupling devices; wherein the coupling ratio of the device is changed to a predetermined value by a control signal applied by its associated station, depending on the state of transmission and reception, level of received signal, operating state of the station, and the like, to thereby provide high reliability, reduced transmission delay and low error rate, as well as to thereby decrease the amount of attenuation between transmitting and receiving stations.

    摘要翻译: 本发明的光通信系统包括光传输线,光耦合器件,每个光耦合器件具有变化的耦合比,连接到传输线,以及连接到光耦合器件的站; 其中,根据发送和接收的状态,接收信号的电平,电台的运行状态等,通过由其相关联的站施加的控制信号将设备的耦合比改变为预定值,从而提供 高可靠性,降低传输延迟和低错误率,从而减少发射站和接收站之间的衰减量。

    Redundancy system for data communication
    4.
    发明授权
    Redundancy system for data communication 失效
    数据通信冗余系统

    公开(公告)号:US4017828A

    公开(公告)日:1977-04-12

    申请号:US594799

    申请日:1975-07-10

    CPC分类号: H04L1/02

    摘要: A redundancy system for data communications upon two duplicate communication channels, each having transmission and reception circuits, characterized by a switching circuit for selecting one of said two communication channels, a single error detection circuit for detecting an error in the signal transmitted, and a control circuit for the switching circuit arranged to cause said two communication channels to alternately transmit signals when both the channels are in normal operation, and to cause one of said two channels to be selected when the other fails. The two channels share the error detection circuit and the control circuit and can therefore be built at a reduced cost and operated efficiently. Since the two channels are regularly checked for errors, they are operated with increased reliability.

    摘要翻译: 一种用于在两个重复通信信道上进行数据通信的冗余系统,每个具有发送和接收电路,其特征在于用于选择所述两个通信信道之一的切换电路,用于检测发送的信号中的错误的单个错误检测电路和控制 所述开关电路被布置成当两个信道都处于正常操作时使所述两个通信信道交替发送信号,并且当另一个信道失败时,使所述两个信道之一被选择。 两个通道共享错误检测电路和控制电路,因此可以降低成本并有效地运行。 由于定期检查两个通道的错误,因此可靠性更高。

    Switching power supply using printed coil type transformer
    5.
    发明授权
    Switching power supply using printed coil type transformer 失效
    开关电源采用印刷线圈式变压器

    公开(公告)号:US5659461A

    公开(公告)日:1997-08-19

    申请号:US492176

    申请日:1995-06-19

    摘要: An indirect feedback type flyback converter that compares favorably with the direct feedback type flyback converter in controllability of secondary output voltage, wherein the converter is arranged so that a switching signal, which is induced in a secondary winding when a direct current input voltage, applied to a primary winding, is turned ON and OFF by a switching element, is smoothed by rectification and fed to a load and that an output voltage is detected using a switching signal induced in an auxiliary winding to transmit a control signal to the switching element for the purpose of stabilizing the output voltage; wherein the primary, secondary and auxiliary windings are formed on respective coil formation surfaces of a coil laminate as convoluted shaped conductor patterns disposed between a core hole at the center of the pattern and the border of the coil formation surface, with the auxiliary winding being disposed to be near the border of the coil formation surface.

    摘要翻译: 一种间接反馈型反激转换器,其与二次输出电压的可控性的直接反馈型反激式转换器相比较,其中转换器布置成使得当直流输入电压施加到次级绕组时被感应的开关信号 初级绕组由开关元件导通和截止,通过整流平滑并馈送到负载,并且使用在辅助绕组中感应的开关信号来检测输出电压,以将控制信号发送到开关元件 稳定输出电压的目的; 其特征在于,所述主绕组,辅助绕组和辅助绕组形成在线圈叠层的相应线圈形成表面上,作为设置在图案中心的芯孔与线圈形成表面的边界之间的卷曲形导体图案,辅助绕组被布置 靠近线圈形成面的边界。

    DC/DC converter
    6.
    发明授权
    DC/DC converter 失效
    DC / DC转换器

    公开(公告)号:US4685039A

    公开(公告)日:1987-08-04

    申请号:US873091

    申请日:1986-06-04

    IPC分类号: H02M3/335

    CPC分类号: H02M3/33569

    摘要: A DC/DC converter which may be used as a power supply of high capacity. The DC/DC converter comprises first and second converters having their primary terminals connected in series so as to insure high output power and high breakdwon voltage; a first diode for forming a closed circuit together with a transformer of the first converter and a capacitor of the second converter when a switching element of the first converter is turned "off"; and a second diode for forming a closed circuit together with a transformer of the second converter and a capacitor of the first converter when a switching element of the second converter is turned "off".

    摘要翻译: 可用作高容量电源的DC / DC转换器。 DC / DC转换器包括其初级端子串联连接的第一和第二转换器,以确保高输出功率和高断续电压; 当第一转换器的开关元件“关闭”时,用于与第一转换器的变压器一起形成闭合电路的第一二极管和第二转换器的电容器; 以及第二二极管,用于当第二转换器的开关元件“关闭”时与第二转换器的变压器一起形成闭合电路和第一转换器的电容器。

    Multi-output switching power supply having an improved secondary output
circuit
    7.
    发明授权
    Multi-output switching power supply having an improved secondary output circuit 失效
    多输出开关电源具有改进的次级输出电路

    公开(公告)号:US5424932A

    公开(公告)日:1995-06-13

    申请号:US036990

    申请日:1993-03-25

    IPC分类号: H02M3/28 H02M3/335

    CPC分类号: H02M3/33561

    摘要: A switching power supply wherein high speed switching and high output voltages are obtained by utilizing an auxiliary power supply and a synchronizing signal having a sawtooth shaped waveform, whereby delay time in a control signal to an FET switch is substantially reduced. The switching power supply comprises a secondary output circuit which is supplied with a square waveform voltage and utilizes an FET switch which controls the width of pulses chopped from the square waveform voltage and causes the output circuit to produce a direct current output voltage having a set value. The control signal to the FET switch is produced by a control circuit which is independently powered by the auxiliary power supply and supplied with the synchronizing signal.

    摘要翻译: 一种开关电源,其中通过利用辅助电源和具有锯齿形波形的同步信号来获得高速开关和高输出电压,从而大大减少了对FET开关的控制信号的延迟时间。 开关电源包括二次输出电路,该二次输出电路被提供方波电压,并利用FET开关,该开关控制从方波电压斩波的脉冲宽度,并使输出电路产生具有设定值的直流输出电压 。 对FET开关的控制信号由控制电路产生,该控制电路由辅助电源独立供电并提供同步信号。

    Ringing choke converter
    8.
    发明授权
    Ringing choke converter 失效
    振铃扼流圈转换器

    公开(公告)号:US4931918A

    公开(公告)日:1990-06-05

    申请号:US377517

    申请日:1989-07-10

    IPC分类号: G05F1/38 H02M3/338 H03F9/02

    CPC分类号: H03F9/02 G05F1/38 H02M3/3385

    摘要: A ringing choke converter power supply device comprising a ringing choke converter power supply for stabilizing an output voltage by an indirect feedback system; a variable impedance element provided on a primary or secondary side of the power supply; and a control circuit for transmitting a control signal to the variable impedance element in such a direction that an error signal obtained by comparing the output voltage of the power supply with a predetermined reference voltage becomes zero. The variable impedance element, which is preferably a saturable reactor, is interposed between a voltage detection winding and a feedback diode or between the feedback diode and a capacitor when the element is provided on the primary side; and is interposed between a transformer secondary winding and a rectifier circuit, when the element is provided on the secondary side.

    摘要翻译: 一种振铃扼流圈转换器电源装置,包括用于通过间接反馈系统稳定输出电压的振铃扼流圈转换器电源; 设置在所述电源的一次侧或次侧的可变阻抗元件; 以及控制电路,用于将控制信号发送到可变阻抗元件,使得通过将电源的输出电压与预定参考电压进行比较而获得的误差信号变为零。 优选可饱和电抗器的可变阻抗元件介于电压检测绕组和反馈二极管之间,或者当该元件设置在初级侧时,该反馈二极管与电容器之间; 并且当元件设置在次级侧时,插入在变压器次级绕组和整流电路之间。

    DC power supply with improved output stabilizing feedback
    9.
    发明授权
    DC power supply with improved output stabilizing feedback 失效
    直流电源具有改进的输出稳定反馈

    公开(公告)号:US4862339A

    公开(公告)日:1989-08-29

    申请号:US175924

    申请日:1988-03-31

    IPC分类号: H02M1/08 H02M3/335

    摘要: A switching type DC/DC converter wherein a switching control circuit is disposed at the primary winding thereof, and a detection signal, in a secondary winding, is insulated by a transformer and fed back to stabilize output voltages. Current consumption is reduced by using a transformer to act as an insulator, and the size of a stabilizing feedback circuit is reduced by using resistors and diodes so that the rate of production thereof is improved. A switching signal in a secondary winding of a main transformer is used as an excitation energy for an insulating transformer of the stabilizing feedback circuit, the excitation energy being supplied through an impedance device. The output voltage supplied to a load is supplied as a stabilizing signal to a primary winding of an insulating transformer by means of the stabilizing feedback circuit. In a secondary winding of the insulating transformer, the excitation energy is used to supply a pure stabilizing signal to the control circuit to stabilize the output voltage. The stabilizing signal is defined as an error signal obtained by comparing the output voltage with a predetermined reference voltage in the primary or secondary winding of the insulating transformer.

    摘要翻译: 一种开关型DC / DC转换器,其中开关控制电路设置在其初级绕组处,并且次级绕组中的检测信号被变压器绝缘并反馈以稳定输出电压。 通过使用变压器作为绝缘体来减少电流消耗,并且通过使用电阻器和二极管来减小稳定反馈电路的尺寸,从而提高其生产率。 主变压器的次级绕组中的开关信号用作稳定反馈电路的绝缘变压器的激励能量,激发能量通过阻抗装置提供。 提供给负载的输出电压通过稳定反馈电路作为稳定信号提供给绝缘变压器的初级绕组。 在绝缘变压器的次级绕组中,激发能用于向控制电路提供纯稳定信号,以稳定输出电压。 稳定信号被定义为通过将输出电压与绝缘变压器的初级或次级绕组中的预定参考电压进行比较而获得的误差信号。

    DC/DC converter
    10.
    发明授权
    DC/DC converter 失效
    DC / DC转换器

    公开(公告)号:US4680688A

    公开(公告)日:1987-07-14

    申请号:US786661

    申请日:1985-10-11

    IPC分类号: H02M3/28 H02M3/335

    摘要: A DC/DC converter for producing a plurality of output voltages, comprising a transformer having a primary coil and a plurality of secondary coils; a switching circuit adapted to turn ON and OFF the supply of input DC voltage to the primary coil; rectifying and smoothing circuits for rectifying and smoothing the AC voltages obtained in the secondary coils; a circuit means connected in series with the rectifying and smoothing circuits to obtain the sum of the output voltages from the respective rectifying and smoothing circuits; and a control circuit adapted to receive the lowest DC output voltage from the rectifying and smoothing circuits and to control the ON - OFF operation of the switching circuit so that the lowest voltage is maintained at a constant level, and wherein the DC voltages from the respective rectifying and smoothing circuits are obtained by making use of one of the output terminals of the lowest DC voltage as a common terminal.

    摘要翻译: 一种用于产生多个输出电压的DC / DC转换器,包括具有初级线圈和多个次级线圈的变压器; 开关电路,其适于接通和断开对初级线圈的输入直流电压的供给; 整流和平滑电路,用于对在次级线圈中获得的AC电压进行整流和平滑; 电路装置与整流和平滑电路串联连接,以获得来自各个整流和平滑电路的输出电压之和; 以及控制电路,其适于从整流和平滑电路接收最低的DC输出电压,并且控制开关电路的导通 - 截止操作,使得最低电压保持在恒定电平,并且其中来自相应 通过使用最低DC电压的输出端子之一作为公共端子来获得整流和平滑电路。