Title: 1-1 ????? (Definitions And Units)
1? ? ?
1-1 ?????
1-5 ?????????
1-2 ?????
1-6 ????
1-3 ????????
1-7 ??????
1-4 ????
????
? ? ? ? ? ? ?
21-1 ????? (Definitions And Units)
- ????????????????????,
- ????????????????????????????
- ??? ?
- ???????????????????
- ?????,????????,?????????????
- ???????,??????????,??????????
- (International System of Units),?? SI ??
- ? SI ??,?????????? (Ampere ?? A),
- ???????????,?????????
1-1
31-1 ????? (Definitions And Units)
- ???? SI ???????,??? 10 ?????????
? ? ? ? ? ?
109 ?? (Giga) G
106 ?? (Mega) M
103 ? (Kilo) k
103 ? (Milli) m
106 ? (Micro) µ
109 ? (Nano) n
1012 ?? (Pico) p
1-2
41-2 ????? (Charge and Current)
???????? t0 ? t ??,????????????
????????????????,????????? ??????,????? (?)
????,???? (?) ?????
1-2
51-2 ????? (Charge and Current)
- ? 1-1?????????? q 5t2 8t mC ,
- ?? t 0s ? t 2s ???? i ??
?
- ? 1-2??????? i 20t 5 mA,
- ?? t 1s ? t 4s
??,??????????
?
1-3
61-3 ???????? (Voltage, Energy and Power)
- ????? 1 ?? (1??) ??,?????????????
- ????,?????? (Voltage,??V)?
- ???????? 1 ??????? 1 ??,???????? 1V
- ???,? 1V 1J / C??????????????
- ????????????????????,???????
- ???????????????
- ???????????,??????????,??????
- ?????,????????
- ?????????? (?????),?????????????
1-4
71-3 ???????? (Voltage, Energy and Power)
- ???????????????,??????? v,
- ????? Dq ?????????????,
- ???????? Dw,?
Dw vDq
?????????? Dt ,????????? (w) ?????
vi ??? (J / C)(C / S) ? (J / S), ???? 1J / S ? 1
?? (Watt,??W)?
1-5
81-3 ???????? (Voltage, Energy and Power)
- ???????????? p vi,?????????????,
- ????? vi ???,????????????????,
- ???????? vi ???
??????? t0 ? t ???????????
1-5
91-3 ???????? (Voltage, Energy and Power)
- ? 1-4?????,???? A ????? i 4A,?
- (a) ???????
- (b) ??? t 0s ? t 4s
??????????
?
1-6
101-3 ???????? (Voltage, Energy and Power)
- ? 1-5 ????????????????,
- ??? v(t) cos100pt (V),? t 1
ms ? t 4 ms - ?????????
? (1-4) ?
?
? ,?????????,? t 1ms ?
??,? t 4ms ?
1-7
111-4 ???? (Circuit Elements)
?????????????????,????????????,??????
(1). ?????????
(a). ??????????????????????
(b). ?????????????????????
1-8
121-4 ???? (Circuit Elements)
(2). ?????????????????
(a). ????????????????,????????,
????????????,?????????
?????????????
???? v ??????????????
(b). ??????? (????) ???????????????
????????,???????? (a)
??????????? (VCVS)
??????????????,??? (b)
???????????
(CCVS)
??????????????,??? (c)?
1-8
131-4 ???? (Circuit Elements)
?????????????????,????????????,??????
(1). ?????????????
(a). ??????????????????
(b). ????????????????????
1-9
141-4 ???? (Circuit Elements)
(2). ?????????????????
(a). ???????????????????????,
?????????????????????,
?????????????,i ??????,
?????????
(b). ????????? (????) ?????????,????
????????????,???????? (a)
??????????? (VCCS)
????????????????,??
? (b)
??????????? (CCCS)
????????????????? (c)?
1-8
151-4 ???? (Circuit Elements)
(a). ?????
(b). ??????
????
1-11
161-4 ???? (Circuit Elements)
1-12
171-4 ???? (Circuit Elements)
???????????????????????????? ??????????,
?
??? N ??,L ??????????????,????? ( Henry,?? H )
Þ
Þ
1-13
181-5 ????????? (Passive and Active Elements)
- ?????????????????????,????????,
- ????????
??????????
???????????
1-15
191-5 ????????? (Passive and Active Elements)
?????????????, ???????
???????????
????????????????
1-16
201-6 ???? (Ohms Law)
- ????? v(t) ??????? R ??,???? i(t) ?? R,
- ?????????????????,
- ? v(t) Ri(t)
1-16
211-7 ?????? (Kirchhoffs Laws)
?? in ??????? n ???,N ???????????
?? in ??????? n ???,N ???????????
- ???????????(???)?
- ????????
1-22
221-7 ?????? (Kirchhoffs Laws)
1. a ? b ???,???? ?,? v1 ????(???????)
2. a ? c ???,???? ?,? v2 ????(???????)
3. c ? d ???,???? ?,? v3 ????(???????)
4. d ? c ???,???? - ?,? v4 ????(???????)
??? KVL ?? v1 v2 v3 - v4 0
???????
v4 ????(?????????????)
v3 ????(?????????????)
v2 ????(?????????????)
v1 ????(?????????????)
1-23
??? KVL ?? v4 v1 v2 v3
23????
- 1-1 ??????????????,? t 0 ? t 4 s
- ? t 0 ? t 7 s ????????????
?975 C383 C
- 1-2 ?????????? A ???? v,??????
- ???? t gt 0 ?? 4(t2-1)W? t gt 0 , v
(2t-2)V, - ?? t 0 ? t 2 s ??,?????? A ??
?8 C
1-24
24????
?6 W
?18000 mJ
?(a) 24e-2tW12 ( 1-e-2 ) J (b) (
-12e-2t ) W6 ( e-2-1 ) J (c) -8e-2tW4 (
e-2t-1 ) J
1-25
25????
- 1-6 ??? i 2 A ??? 12 V ??????,?????
- ????? ( ??????????? ),??2???
- (a) ???????,(b) ?????????
?(a) 172800 J (b) 14400 C
- 1-7 ?????? 6 V,?????????? q ?????
- ?? t 4 ms,????????,?? t 1 ? 10ms ?
- ??????????????
?0.75 W2 mc6 J
1-25
26????
?(a) 40(b) 12(c) -24(d) -18 W
?-90-80-50100120 W
1-26
27????
?-5 A12 A
?-5 A12 A
?9 V
- 1-12 ???? i1 , i2 , v1 , v2 ??
?6 A4 A18 V28 V
1-26