《电路分享基础英文PPT (18).pdf》由会员分享，可在线阅读，更多相关《电路分享基础英文PPT (18).pdf（6页珍藏版）》请在taowenge.com淘文阁网|工程机械CAD图纸|机械工程制图|CAD装配图下载|SolidWorks_CaTia_CAD_UG_PROE_设计图分享下载上搜索。
1、Thevenins Theorem(1)1.Example 3A1020V101A6V4I4IsURThe Thevenin equivalent circuit-+uiscIeqR-+uiocUeqR-+The Norton equivalent circuit-+uiLineartwo-terminalcircuitLoad Thevenins theorem states that a linear two-terminal circuit can be replaced by an equivalent circuit consisting of a voltage source Uo
2、c in series with a resistor Req,where Uoc is the open-circuit voltage at the terminals and Req is the input or equivalent resistance at the terminals when the independent sources are turned off.2.Thevenins Theorem:-+uabiLineartwo-terminalcircuitLoad-+uabiocUeqR-+Loadthe companion voltage source 3.Pr
3、oof of the theorem:+ocequuuUR i-+uabi-+ocUeqR=-+uabiLineartwo-terminalcircuit-+uabiLineartwo-terminalcircuit-+uabiLineartwo-terminalcircuit-+uabiLinear circuit withall independentsources set equalto zeroocequUR iocuU equR i Quiz:In the figure,which one is the Thevenin equivalent resistance Req?4.8 10 2.4 5 B C D 4664eqRA Answer:A 4664-+10V