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Chap3_exercise

# Chap3_exercise - 3 3 UZ 6V R3 3V RX 12V uo Rx A uf = = ui...

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3 － 3 －－－－－－－－－ U Z － 6V －－－－－－ R 3 －－－－－－－ 3V －－ R X －－ A 1 + R X 100K 10K 6V +12V 1M 1K V －－ － : －－－－－－－－－－ 5 . 0 6 3 R R A 1 i o u x f u u = = = × = K 50 5 . 0 R R 1 x

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3 － 4 －－ u i1 － u i2 －－－－－－－－－－－－ A 1 + u o R 1 u i1 u i2 R 2 R 1 R 1 u i2 t 3 u i1 t u o t u O = －－ u i1 +u i2 － 3 － 3 3
3 － 5 －－ u i1 － 0.5V － u i2 －－ 2V － u i3 － 1V －－－－－－－－－－－－－ u o R 3 A 1 + u i1 A 2 u o u i2 60KΩ u o1 30KΩ 100KΩ 50KΩ 20KΩ － : ] ) 2 ( 50 100 5 . 0 20 100 [ u 1 0 × + × - = A 1 －－－－－－－ A 2 －－－－－－ V 5 . 1 = 39KΩ 39KΩ u i3 R 3 2 u ) 30 60 1 ( u i3 0 + = u 30 60 O1 - V 5 . 1 = = K 5 . 12 20 // 50 // 100 R 3

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3 － 6 i L u i －－－－－ u O u i R R 1 i L R L L i i u u u = = = + R 1 R 1 1 = i L u i A. u +为为为为 B. u 为≠ ui C. iL= uO为(RL+R1) D. i 为为 u为为R1
u O U i R L I L R 1 ) R R ( I L 1 L + = = = - + o u u u L L R I + = - i U u R 1 1 = i L U I

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3 － 7 －－－－－ T －－－－－－－－ R 2 － R 3 － R 4 － 4R 1 －－－－－－－－－－－－ －－ u o u i i 2 i 1 R 1 R R 2 R 3 R 4 i 4 i 3 M R R u i R 0 u 1 i 2 2 2 M - = - = i R R u R R R R u i 1 3 2 i 3 1 2 3 M 3 = = - = ) i i ( R i R u u u 3 2 4 2 2 o 4 R M + - - = + = i R i ) R R ( 3 4 2 4 2 - + - = R u R R R R u ) R R ( 1 i 3 2 4 1 i 4 2 - + - = u + u ≈ 0 －－－－－ i i + － 0 i 1 i 2 = u i － R 1 － : 12 ) R R // R 1 ( R R R u u 3 4 2 1 4 2 i 0 ＝＝ + + - =
3 － 8 －－－－－－－－－ A u －－－－－ u O 10K 20K u i RP － : u ) 10 20 1 ( u i 0 + = u 10 20 i - i u = －－－－－－－ －－－－－－－－－ i i 0 u 2 u 10 20 u = = －－－－－－－－－－－－－－－ Au －－－－－ 2~ 1

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3 － 9 －－－－－－－－－ u O － u i －－－ u O u i S － : u ) 2 R R 1 ( u i 0 + = u R R i - i 2u = S －－－－－－－－ 2 u ) 2 R R 1 ( u i 0 + = u R R i - i u 5 . 0 = S －－－－－－－－－
3 － 10 －－－－－－－－－ u O －－－－－－－ A 1 + R F U Z +U R 1 u O A 1 + R F +U R 1 u O R 2 R 3 u i Z 1 F 0 U ) R R 1 ( u + = －－－－－－－－－ u u i 0 = U R R R R 3 2 1 3 －－－－－－－－ －－－－－－ －－－－－－－－－－－

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