例:右图所示放大电路 i R ibhie t(l+ b)rei - BR hie +(l +b)rel R + r 十 hie. ibrce FRCoOIRL (1+B)i 继续 R 返回例：右图所示放大电路 ③ v s i i s i i o vs ie e 1 l b ie e 1 b c l i o v A R R R v v v v A h 1 R R i h 1 R i i R v v A  + =   = + + − = + + − = = ( ) ' ( ) '    R i ib ic (1+β)ib − + o v − + vi 继续 返回