Circuit and method for supplying an electrical a.c. load
    2.
    发明授权
    Circuit and method for supplying an electrical a.c. load 有权
    电气交流电路和方法 加载

    公开(公告)号:US07015679B2

    公开(公告)日:2006-03-21

    申请号:US10741055

    申请日:2003-12-19

    IPC分类号: G05F1/40

    CPC分类号: H02M1/44 H02M1/12 H02M5/293

    摘要: A method and circuit for supplying a variable voltage to an electrical a.c. load (R, L), comprising: a control signal input for receiving a switching control signal to control load output voltage; first and second circuit output terminals (ACL1, ACL2) for connection to the load; first switch means (S1) having an input coupled to the control signal input and having an output coupled between one (ACL1) of the circuit output terminals (ACL1) and a first a.c. line terminal (AC1); second switch means (S2) having an input coupled to the first switch means and having an output coupled between the first and second circuit output terminals (ACL1, ACL2) and coupled to a second a.c. line terminal (AC2); and providing a switching control signal to the control signal input to switch the first and second switch means complementarily. The switch means may each comprise a power transistor (Q1; Q2) and a bridge rectifier (B1; B2).

    摘要翻译: 一种用于向电气交流电供应可变电压的方法和电路。 负载(R,L),包括:用于接收切换控制信号以控制负载输出电压的控制信号输入; 用于连接到负载的第一和第二电路输出端子(ACL1,ACL2); 第一开关装置(S1)具有耦合到控制信号输入的输入,并且具有耦合在电路输出端子(ACL1)的一个(ACL1)和第一直流 线路终端(AC 1); 第二开关装置(S 2),具有耦合到第一开关装置的输入端,并且具有耦合在第一和第二电路输出端子(ACL1,ACL2)之间的输出端并耦合到第二开关装置。 线路终端(AC 2); 以及向所述控制信号输入提供切换控制信号以互补地切换所述第一和第二开关装置。 开关装置可以各自包括功率晶体管(Q 1; Q 2)和桥式整流器(B 1; B 2)。