星三角等效变换VIP免费

§26星形电阻网络与三角形电阻网络的等效变换电桥不平衡怎样处理？提出问题等效条件：313123231212uuuuuuiiiiii,,,,,332211由Y网络可得2211RiRiu123322RiRiu23123iii（设加撇为Δ网络中的变量）由此解得133221213322131RRRRRRuRRRRRRRuRi3112133221313322112RRRRRRuRRRRRRRuRi1223133221113322123RRRRRRuRRRRRRRuRi2331由Δ网络可得31121RuRui311212232RuRui1223133221213322131RRRRRRuRRRRRRRuRi3112133221313322112RRRRRRuRRRRRRRuRi1223等效结果：Y↓Δ3212112RRRRRR1323223RRRRRR2131331RRRRRR比较上面两组式子，可得出由星形电阻网络变换为等效的三角形电阻网络时电阻的计算式Δ↓Y31231231121RRRRRR31231212232RRRRRR31231223313RRRRRR对称三端电阻网络(symmetricalthree-terminalresistancenetwork)RRRR312312YRRRR321对称三端电阻网络的变换关系：Y3RRRR31Y例在图示电路中，R1=1,R2=2,R3=3,R4=4,R5=5，R6=6，Us=1V。试求通过电压源的电流I。A535.0A868.1131sRUI返回