戴维宁等效负电阻与自然规律相悖现象  

About the Thevenin's Equivalent Negative Resistance Discussion

作　　者：刘松山[1] 

机构地区：[1]中原工学院广播影视职业学院,郑州450002

出　　处：《河南师范大学学报（自然科学版）》2013年第1期72-73,共2页Journal of Henan Normal University(Natural Science Edition)

摘　　要：论述了含受控源的线性有源二端网络的戴维宁等效电阻若可以取负值,就会出现违反能量守恒定律、违反最大功率传输定理和违反欧姆定律的现象.这是电路在实际应用中从未发生的现象.得出含受控源的线性有源二端网络的戴维宁等效电阻,不可能是负电阻的结论.这样,上述与自然规律相悖的现象才能不存在,在应用戴维宁定理对电路分析时,才能全面符合客观规律.If Thevenin＇s equivalent resistance containing controlled source＇s liner two-terminal active network could take negative values, the situation would occur that goes against the I.aws of Conservation of Energy, Maximum Power Transfer and Ohm. This is the phenomenon that may not occur in the practical use of circuits, so comes the conclusion that it could not be the negative resistance. Thus, it could fully comply with objective rules when analysing the circuits by using Thevenin＇s theorem.

关 键 词：戴维宁定理 戴维宁等效电阻 负电阻 

分 类 号：TM13[电气工程—电工理论与新技术]