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    Electronic control system for motors and the like
    1.
    发明授权
    Electronic control system for motors and the like 失效
    电动机用电子控制系统等

    公开(公告)号：US3895275A

    公开(公告)日：1975-07-15

    申请号：US49249174

    申请日：1974-07-29

    申请人： ROSTAD ROLF A

    发明人： ROSTAD ROLF A

    IPC分类号： H02H7/08 ,  H02P1/08 ,  H02P1/20 ,  H02P25/26 ,  H02P27/02 ,  H02P5/40

    CPC分类号： H02P27/02 ,  H02H7/0833 ,  H02P1/08 ,  H02P1/20 ,  H02P25/26

    摘要： A controller for a motor or like electrical equipment. A thyristor in series with a power conductor that feeds the equipment and a control circuit for activating the gate terminal of the thyristor in accordance with the operating conditions of the equipment. The control circuit includes a transformer having a secondary winding connected to the gate terminal and means for varying the current flow in the secondary winding according to load demands. A three phase system having a thyristor in each conductor and a transformer secondary winding for each thyristor, which windings are on a common core.

    摘要翻译： 用于电动机或类似电气设备的控制器。 与供电设备的电力导体串联的晶闸管，以及根据设备的工作条件启动晶闸管的栅极端子的控制电路。 控制电路包括具有连接到栅极端子的次级绕组的变压器和用于根据负载需求改变次级绕组中的电流的装置。 在每个导体中具有晶闸管的三相系统和每个晶闸管的变压器次级绕组，这些绕组在公共芯上。

    Direct current motor starter circuit
    2.
    发明授权
    Direct current motor starter circuit 失效
    直流电机起动电路

    公开(公告)号：US3735227A

    公开(公告)日：1973-05-22

    申请号：US3735227D

    申请日：1972-01-24

    申请人： US NAVY

    发明人： GILL G

    IPC分类号： H02P1/20

    CPC分类号： H02P1/20 ,  Y10S388/903

    摘要： A starting circuit for a direct current motor employs a zener diode to sense the back e.m.f. The zener diode is connected to a switch which effectively disconnects a current limiting impedance out of the armature circuit when the motor has obtained operating speed. In one arrangement, two zener diodes are used in combination to provide an adjustable control for the switching point. Another disclosed arrangement includes a current amplifier connected between the zener diode and the switch to provide for operation of the switch having a relatively high operating power requirement.

    摘要翻译： 用于直流电动机的起动电路采用齐纳二极管来感测后面的电动机。 齐纳二极管连接到开关，当电动机获得操作速度时，该开关有效地将电流限制阻抗从电枢电路断开。 在一种布置中，组合使用两个齐纳二极管以为切换点提供可调整的控制。 另一公开的布置包括连接在齐纳二极管和开关之间的电流放大器，以提供具有相对高的工作功率需求的开关的操作。