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    • 81. 发明授权
    • Half-bridge converter with high power factor
    • 半桥转换器具有高功率因数
    • US06798674B2
    • 2004-09-28
    • US10273117
    • 2002-10-18
    • Bong-Hwan Kwon
    • Bong-Hwan Kwon
    • H02J102
    • H02M1/4208H02M7/155Y02B70/126
    • A half-bridge converter having an improved power factor is provided. The half-bridge converter has a bridge diode unit for providing a current path to a power factor improving unit and transmitting energy to a voltage smoothing capacitor; the voltage smoothing capacitor for storing energy provided by the bridge diode unit; and a switching unit having two switches serially connected between both ends of the voltage smoothing capacitor, in which the power factor improving unit for feeding the voltage of the common connection point of the switches forming the switching unit back to the common connection point of the input capacitors so as to change an input current according to the magnitude of the input voltage is further included. According to the half-bridge converter, conducting loss occurring in the switching unit decreases and the power factor of the input terminal is improved.
    • 提供具有改善的功率因数的半桥转换器。 半桥转换器具有桥二极管单元,用于向功率因数改善单元提供电流路径并将能量传输到电压平滑电容器; 用于存储由二极管单元提供的能量的电压平滑电容器; 以及开关单元,其具有串联连接在所述电压平滑电容器的两端之间的两个开关,所述功率因数改善单元用于将形成所述开关单元的开关的所述开关的公共连接点的电压馈送回所述输入的公共连接点 进一步包括电容器以便根据输入电压的大小改变输入电流。 根据半桥转换器,在开关单元中发生的导通损耗降低,输入端子的功率因数提高。
    • 83. 发明授权
    • System for off-mains switching of current consuming devices such as
actuators
    • 电力消耗装置如执行器的电源切换系统
    • US5939803A
    • 1999-08-17
    • US696868
    • 1996-08-21
    • John Frost
    • John Frost
    • H02J3/00H02H3/12H02J7/04H02M5/257H02M7/155H01H35/00
    • H02H3/12H02M5/257H02M7/155H02J2009/007H02M2001/0006Y10T307/391Y10T307/398Y10T307/461Y10T307/832
    • An off mains switching system automatically switches off the mains current to current consuming units and reestablishes operational voltage thereto in response to switching on of such units. A control circuit actuates a voltage coupler in response to a unit becoming switched on and interrupts the voltage supply as a result of a detected termination of noticeable current consumption by such unit. The control circuit includes an operation capacitor with a relatively high capacity to which a charging voltage is supplied as long as the mains are connected. The operating capacitor operates as a voltage source for actuation of a control system in response to restarting of the unit. The control circuit further includes means for internally enabling a connection with the mains for maintaining a voltage supply for the control circuit when the charge on the capacitor drops below a critical level.
    • PCT No.PCT / DK95 / 00091 Sec。 371日期:1996年8月21日 102(e)日期1996年8月21日PCT提交1995年2月28日PCT公布。 出版物WO95 / 23450 日期1995年8月31日关闭电源开关系统自动关闭电流到电流消耗单元,并响应于这些单元的接通而重新建立工作电压。 控制电路响应于单元变为导通而致动电压耦合器,并且由于该单元检测到的可观察到的电流消耗的终止而中断电压供应。 只要电源连接,控制电路包括具有相对高容量的操作电容器,在该电容器上提供充电电压。 操作电容器作为响应于单元重新启动的控制系统的电压源而起作用。 控制电路还包括用于在电容器上的电荷下降到临界水平以下时内部实现与电源的连接的装置,用于维持控制电路的电压供应。
    • 86. 发明授权
    • Boost-buck rectifier bridge circuit topology with diode decoupled boost
stage
    • 具有二极管解耦增压级的升压降压整流桥电路拓扑
    • US5625549A
    • 1997-04-29
    • US310946
    • 1994-09-23
    • Ivan Horvat
    • Ivan Horvat
    • H02M7/155H02M7/219H02M7/525
    • H02M7/155H02M7/219
    • A boost-buck rectifier bridge circuit topology having two diode decoupled boost stages is formed as an H-shaped bridge with the alternating voltage source comprising the center leg and the first and second H-shaped bridge arms comprising a series connected SCR and bridge diode in each of the legs and a third and fourth bridge diode in the respective third and fourth arms of the H-shaped bridge. The first boost stage is coupled between the junction of the first SCR and first bridge diode and the negative polarity DC voltage bus and a second boost stage is coupled between the positive polarity DC voltage bus and the junction of the second SCR and second bridge diode in the second arm of the H-shaped bridge so that the first boost stage is decoupled by the first bridge diode and the second boost stage is decoupled by the second bridge diode whereby the load current delivered by the circuit is carried solely by the bridge diodes and not the boost stage switching devices.
    • 具有两个二极管解耦增压级的升压降压整流桥电路拓扑形成为H形桥,其中交流电压源包括中心支路,第一和第二H形桥臂包括串联连接的SCR和桥二极管 在H形桥的相应第三和第四臂中的每个腿和第三和第四桥二极管。 第一升压级耦合在第一SCR和第一桥式二极管的接点与负极性DC电压总线之间,第二升压级耦合在正极性DC电压总线与第二SCR和第二桥式二极管的结之间 H形桥的第二臂,使得第一升压级由第一桥式二极管去耦,并且第二升压级由第二桥式二极管去耦,由此由电路传送的负载电流仅由桥式二极管承载, 不是升压级开关器件。
    • 89. 发明授权
    • Power supply device
    • 电源设备
    • US5539300A
    • 1996-07-23
    • US282497
    • 1994-08-01
    • Serge Mathieu
    • Serge Mathieu
    • G05F1/12H02M1/40H02M7/155
    • H02M1/40G05F1/12H02M7/155
    • A power supply for an electronic device such as the control circuitry of a thermostat. The power supply has a current transformer with a primary winding in series with the power line that is connected to the heating source, and a secondary winding coupled to the primary winding through a saturable magnetic core. A thyristor connected across the output terminals of the secondary winding establishes a momentary short-circuit condition when the voltage developed across the secondary winding exceeds a preset level in order to prevent the magnet core of the transformer from saturating.
    • 电子设备的电源,例如恒温器的控制电路。 电源具有电流互感器,其中初级绕组与连接到加热源的电源线串联,以及通过可饱和磁芯耦合到初级绕组的次级绕组。 连接在次级绕组的输出端子上的晶闸管在次级绕组上产生的电压超过预设电平时会立即产生短路状况,以防止变压器的磁芯饱和。
    • 90. 发明授权
    • Rectifier able to operate with at least two separate ranges of
alternating current supply voltage
    • 整流器能够以至少两个独立的电流供应电压范围进行工作
    • US5162984A
    • 1992-11-10
    • US664720
    • 1991-03-05
    • Thierry CastagnetJean-Claude Bielli
    • Thierry CastagnetJean-Claude Bielli
    • H02M1/10H02M7/06H02M7/10H02M7/155
    • H02M1/10H02M7/155
    • A rectifier power supply automatically adjusts to operate over either of two separate ranges of AC line voltages by reconfiguring filter capacitors so as to charge the capacitor serially when operated over the higher range of voltages and to charge the capacitors separately over each half cycle when operated over the lower voltage range. A triac device, used to control charging of the capacitors, is selectively activated only during a small portion of each half cycle to minimize power consumption. The device includes a bridge rectifier circuit receiving an AC line voltage and supplying pulsating DC to the serially connected two filter capacitors. The triac is used as a switch and is connected between one input terminal of the diode bridge and a node point between the two capacitors. An AC line voltage range detector and triac control circuit responsive to the range detector causes the triac to conduct when the AC line voltage is detected within the lower range. In particular, the control circuit causes the triac to conduct after a first time interval after a zero crossing of the AC line voltage and to cease conducting after a second time interval.
    • 整流器电源通过重新配置滤波电容器自动调整以在两个不同的交流线路电压范围内工作,以便在较高电压范围内工作时对电容器进行串联充电,并在每半个周期操作时分别对电容器充电 电压范围较低。 用于控制电容器充电的三端双向可控硅开关元件装置仅在每个半周期的一小部分期间被选择性地激活以最小化功耗。 该装置包括桥接整流电路,其接收交流线路电压并向串联连接的两个滤波电容器提供脉动DC。 三端双向可控硅开关元件用作开关,并连接在二极管电桥的一个输入端子和两个电容器之间的节点之间。 响应于量程检测器的AC线路电压范围检测器和三端双向可控硅开关控制电路使得当在较低范围内检测到AC线路电压时,三端双向可控硅开关元件导通。 特别地,控制电路使得三端双向可控硅开关在交流线路电压过零之后的第一时间间隔之后导通,并且在第二时间间隔之后停止导通。