Voltage conversion method
    1.
    发明授权
    Voltage conversion method 失效
    电压转换方法

    公开(公告)号:US4371917A

    公开(公告)日:1983-02-01

    申请号:US276384

    申请日:1981-06-16

    申请人: Tadeusz Bator

    发明人: Tadeusz Bator

    CPC分类号: H02M3/33507

    摘要: The invention relates to a voltage conversion method specially feasible for the transformation of low voltages to high voltages by means of a switching convertor. The method according to the present invention eliminates the current transients (B) through the switching unit (S), which is controlled in such a way that the time period (t.sub.F) during which the switching unit (S) is in its off-state is made to have a duration such that the resonance voltage (D.sub.u) on the transformer windings always has a predetermined phase, when said switching unit (S) is triggered to change to its conduction state. Voltage conversion according to the invention has high efficiency and causes little radio-frequency interference.

    摘要翻译: PCT No.PCT / SE80 / 00251 Sec。 371日期1981年6月16日第 102(e)日期1981年6月16日PCT提交1980年10月15日PCT公布。 出版物WO81 / 0122400 日期:1981年04月30日本发明涉及一种特别适用于通过开关转换器将低电压转换为高电压的电压转换方法。 根据本发明的方法通过切换单元(S)消除了电流瞬变(B),该切换单元(S)被控制成使得切换单元(S)处于其关闭状态的时间段(tF) 使得当所述开关单元(S)被触发改变为其导通状态时,使得变压器绕组上的谐振电压(Du)总是具有预定相位的持续时间。 根据本发明的电压转换具有高效率并且几乎不产生射频干扰。

    Phase monitor
    2.
    发明授权
    Phase monitor 有权
    相位监视器

    公开(公告)号:US06150792A

    公开(公告)日:2000-11-21

    申请号:US254189

    申请日:1999-03-02

    申请人: Hans Andersson

    发明人: Hans Andersson

    CPC分类号: H02H7/097 H02H11/004

    摘要: A phase monitor for a short-circuited asynchronous three-phase motor comprises a first and a second sensing unit, both of which are connected to a supply voltage line to the motor in order to sense the voltage conditions on the line, and a control switch which is controlled by the two sensing units and connected in a control circuit for a supply voltage switch for the motor, connected in the supply voltage line. When the supply voltage line is connected to a supply voltage source, the first sensing unit causes an immediate switching-on operation of the control circuit if the voltage conditions on the supply voltage line sensed by the first sensing unit at that moment are acceptable. After a switching-on operation of the control switch caused by the first sensing unit, the second sensing unit, which is operatively connected to the control switch via a delay unit, provides a delayed control of the state of the control switch in dependence upon the voltage conditions on the supply voltage line sensed by the second sensing unit.

    摘要翻译: PCT No.PCT / SE97 / 01486 Sec。 371日期1999年3月2日 102(e)1999年3月2日PCT 1997年9月5日PCT公布。 公开号WO98 / 10501 日期1998年3月12日用于短路异步三相电动机的相位监控器包括第一和第二感测单元,两者都连接到电动机的电源电压线,以便感测线路上的电压状况 以及控制开关,其由两个感测单元控制并连接在电源电压线中连接在用于电动机的电源电压开关的控制电路中。 当电源电压线连接到电源电压源时,如果在该时刻由第一感测单元感测到的电源电压线上的电压条件是可接受的,则第一感测单元引起控制电路的立即接通操作。 在由第一感测单元引起的控制开关的接通操作之后,经由延迟单元可操作地连接到控制开关的第二感测单元根据控制开关的状态提供对控制开关的状态的延迟控制 由第二感测单元检测的电源电压线上的电压条件。

    Method and apparatus for producing laser pulses with high reproducibility
    3.
    发明授权
    Method and apparatus for producing laser pulses with high reproducibility 失效
    用于生产具有高再现性的激光脉冲的方法和装置

    公开(公告)号:US4112392A

    公开(公告)日:1978-09-05

    申请号:US792102

    申请日:1977-04-29

    IPC分类号: H01S3/104 H01S3/097

    CPC分类号: H01S3/104

    摘要: A coaxial high repetition rate pulsed gas laser is provided, having a peak value pulse to pulse reproducibility better than 1% at a repetition rate of up to 400 Hz. This is accomplished by synchronizing the time evolution of the high tension laser electrode voltage with the gas break-down delay period in such a way that the laser output and stability are optimized.

    摘要翻译: 提供同轴高重复率脉冲气体激光器,其具有以高达400Hz的重复频率具有优​​于1%的脉冲重现性的峰值脉冲。 这是通过使高压激光电极电压的时间演变与气体分解延迟周期同步,使激光器的输出和稳定性得以优化。