510

RC RL RC

7.1.1 7.1.2

7.1.1 1. u-qq(t)uC(t)uC-quC-q 7.17.1

(1) (2)ict (3)uc(t)t uC(t)iC(t)7.1(a)

1

2

=0

7-1 4.75F 50Hzu(t)= V1

2

3

3) iL(t)iL(t)(7.2(a))7.2(b)

7.2

iL(t)

L

(7-8)

(1) uL(t)=0 (2) 3)()

4)

5)

2. (1) (2) (3)

3. 7.3(a)7.3(b)RCRL 7.3 RCRL

uC(0+)iL(0+) t=0+ t=0+ 7.1.2

(1) (2) uC(0-)=0uC(0+)=0 (3) iL(0-)=0iL(0+)=0 (4)

7-2 7.4(a) :(1) 7.4(a)

(2)0+7.4(b)7.4 7-2

7-3 7.5(a)t=0 17.5 7-3

(27.5(b)

RC Z RC

RC7.2.1 RC7.2.2 RC7.2.3 RC7.2.4

7.2.1 RC RCuC(0+)

7.6RC1uc(0+)=Us

7.7 7.6 RC 7.7

=RCRC

uC(t)i(t)7.8

7.8 (3~5)

7-4 7.6C=10FR=5k210-3J(1)uC(t)iC(t)(2)8V(3)4s2VR(1)(7-5)

uC(0+)iC(0+)(7-22)(7-24) V A(2)uC(t)=8V t=0.018s(3)R=uC(t)=2VC=10Ft=4s R=173.9 k

7.2.2 RC 7.9(a)SRCuC(0+)=0RC SuCUS

7.9 RC

KVLRCuC(t) i(t) uC(t)i(t)7.9(b)7.9(c)

7-5 7.9(a)US=12VR=5kC=1000FSt=0uCiC (1) US=12V (2)

7.2.3 RC RCRC

7.10 RC

7.10(a)2 uC(0+)=uC(0-)=U2 S21U1 (7-36)

(7-40) (7-40)RCU1U1

(7-41) (7-41)RC

7.10(a)3 (1)U1=U2(7-40)uC(t)=U1 (2)U1>U2CU17.10(b) (3)U1

7-6 7.11t 0uc(t)i(t) :(1) :=10 v =2.25v=RC=(R1//R2)C=1.125s V(2)A7.11 7-6

7.2.4 (7-40)RC f(t)(7-40)uC(t)tt+ (7-42) (7-43)

(7-44) (RCReqCRLL/Req)3 (7-44)

7-7 7.12R1=R2=R3=2kC=3103pFUS=12VSuC(0-)=0t=0SuC (1) uC(0+)=uC(0-)=07.12 7-7

(2) (3)

(4)uC()uC()(7-44)

RL RC RLRCL RLRCRL

RL7.3.1 RL7.3.2 RL7.3.3 RL

7.3.1 RL iL(0+)RL 7.14S1S2iL(0+)=iL(0-)= S1S2 (7-45)

iL (7-49)

(7-50)

(7-50)(7-45)R2 (7-51)

7.15

7.14 RL 7.15 RL

7.15RL (3~5) RLRL

7-9 7.16RLSt=0SUS=200VR0=10L=0.5HR=40iLuLuR(1)SS A (2) (3)7.16 7-9

7-10 7.17Si L

t >0 S

7.17 7-10

A

7.3.2 RL 7.18S iLuLKVL

7.18 RL

RL

7.19iLuLuRRL7.19 RL

7-11 7.18US=10VR=10L=5HS(1)(2)t=0st=+ (1)

(2)t=0st=+ L

7.3.3 RL RLRL7.20

7.20 RL

7-12 7.20US=100VR0=R=50L=5HSt=0SiLuL (1)

(2)

RC RC()()RCRC

RC7.4.1 RC7.4.2 RC

7.4.1 RC RC7.21(a) 7.21(b)50 TwTTwT =RCTwuoR

7.21

1. 1t=0uC(0+)=uC(0-)=0uo (0+)=ui=U2R t< uCuoR17.21(c)0

2. t=T/2uiRCuo=uC=-UR17.21(c)

RC(1) (2)R

7.4.2 RC 7.21(a) 7.22(a)7.22bc

7.22

1. t=0 UuCuo7.22(c) 0

2. t=T/2 U1()U7.22(c)

RC(1) (2)

Thanks!