R3∥ -62 B2R4 107 A.=A,·A.,≈6634 R1=R1∥e1≈1.5kg R=R=2kQ 图(e) A=-g R2//he+(1+ B)R4I +B)R4 (1+B)R R1=R1=10M R=R1∥ rhe + r2 43g 3.6 B(R+) (1)Ad (2)△ B(R+ Rw A Au= BR.△ △lu C2 B(R Ad 3.7 U VE-po≈0.517mA BEQ +EQ)+2lEoRe=VEE, IEQ Rw +2R 26mv h=hb+(1+B) h。÷5.179kg BR A +(1+B R1=2e+(1+B)R13 = =  =   =   =  −  − −  = 2k 1.5k 6634 107 62 ( ) o 4 i 1 be1 1 2 be2 2 4 2 be1 1 3 be2 1 R R R R r A A A r R A r R r A u u u u u ∥ ∥        图（e）     + + = = =  =   −  + + + = = − + +  −  − 43 1 10M 6 1 (1 ) (1 ) [ (1 ) ] 6 be 2 o 4 i 1 1 2 be 4 4 2 1 2 be 4 2     r R R R R R A A A r R R A A g R r R g R u u u u u m m ∥ ∥      3.6 b e W c I O d O C1 C2 I b e c I C2 b e c W C1 b e W c I O d ) 2 ( 2 2 ( ) (2) ) 2 ( (1) r R R u u A u u u u r R u u r R R u r R R u u A + = −   =  =  −     =   +  = − + = −   =     3.7 = + +    − + + = − = + +    − +  + = = 2 (1 ) 10.4k 97 2 (1 ) 5.179k 26mV (1 ) 0.517mA 2 2 2 2 i b e W W b e c d EQ b e bb' e W EE BEQ EQ e EE EQ W BEQ EQ R r R R r R A I r r R R V U I R V I R U I     ＋