鐢佃矾鍒嗘瀽
璇曢锛堚厾锛?/p>
浜?/p>
.
濉┖
锛堟瘡棰?/p>
1
鍒嗭紝鍏?/p>
10
鍒嗭級
1
锛?/p>
KVL
浣撶幇浜嗙數璺腑
瀹堟亽鐨勬硶鍒欍�?/p>
2
锛庣數璺腑锛屾煇鍏冧欢寮�璺紝鍒欐祦杩囧畠鐨勭數娴佸繀涓?/p>
銆?/p>
3
锛庤嫢鐢佃矾鐨勬敮璺暟涓?/p>
b
锛岃妭鐐规暟涓?/p>
n
锛屽垯鐙珛鐨?/p>
KCL
鏂圭▼鏁颁负
銆?/p>
4
锛庡湪绾挎�х數璺彔鍔犲畾鐞嗗垎鏋愪腑锛屼笉浣滅敤鐨勭嫭绔嬬數鍘嬫簮搴斿皢鍏?/p>
銆?/p>
5
锛庤嫢涓�闃剁數璺數瀹圭數鍘嬬殑瀹屽叏鍝嶅簲涓?/p>
uc(t)= 8 - 3e
-10t
V,
鍒欑數瀹圭數鍘?/p>
鐨勯浂杈撳叆鍝嶅簲涓?/p>
銆?/p>
7
锛庤嫢涓�涓寮︾數鍘嬬殑鐬椂琛ㄨ揪寮忎负
10cos(100
蟺
t+45
掳
)V,
鍒欏畠鐨勫懆鏈?/p>
T
涓?/p>
銆?/p>
8
锛庢寮︾數鍘?/p>
u
1
(t)=220cos(10t+45
掳
)V, u
2
(t)=220sin(10t+120
掳
)V,
鍒欑浉浣嶅樊蠁
12
锛?/p>
銆?/p>
9
锛庤嫢鐢垫劅
L
锛?/p>
2H
鐨勭數娴?/p>
i
=2 cos(10t+30
掳
)A (
璁?/p>
u ,
i
涓哄叧鑱斿弬鑰?/p>
鏂瑰悜
)
锛?/p>
鍒欏畠鐨勭數鍘?/p>
u
涓?/p>
銆?/p>
涓夛紟姹備笅鍥惧崟鍙ｇ綉缁滅殑璇洪】绛夋晥鐢佃矾锛屽苟鐢荤瓑鏁堢數璺浘銆?/p>
(15
鍒?/p>
)
a
b
鍥涳紟鐢ㄧ粨鐐瑰垎鏋愭硶锛屾眰鍚勭粨鐐圭數浣嶅拰鐢靛帇婧愬姛鐜囥�?/p>
(15
鍒?/p>
)
1 2
浜旓紟涓�闃剁數璺鍥撅紝
t = 0
寮�鍏虫柇寮�锛屾柇寮�鍓嶇數璺负绋虫�侊紝姹?/p>
t
鈮?/p>
0
鐢垫劅
鐢垫祦
i
L
(t) ,
骞剁敾鍑烘尝褰€�?/p>
(15
鍒?/p>
)
鐢佃矾鍒嗘瀽
璇曢锛堚叀锛?/p>
浜?/p>
.
濉┖
锛堟瘡棰?/p>
1
鍒嗭紝鍏?/p>
10
鍒嗭級
1
锛庣數璺殑涓ょ被绾︽潫鏄?/p>
銆?/p>
2
锛庝竴鍙?/p>
100
惟锛?/p>
1w
鐨勭數闃诲櫒锛屼娇鐢ㄦ椂鐢甸樆涓婄殑鐢靛帇涓嶅緱瓒呰繃
V
銆?/p>
3
锛庡惈
U
S
鍜?/p>
I
S
涓ょ洿娴佺數婧愮殑绾挎�ч潪鏃跺彉鐢甸樆鐢佃矾锛岃嫢
I
S
鍗曠嫭浣滅敤鏃讹紝
R
涓婄殑鐢垫祦涓?/p>
I
鈥诧紝褰?/p>
U
S
鍗曠嫭浣滅敤鏃讹紝
R
涓婄殑鐢垫祦涓?/p>
I"
锛岋紙
I
鈥蹭笌
I"
鍙傝�冩柟鍚戠浉鍚岋級锛屽垯褰?/p>
U
S
鍜?/p>
I
S
鍏卞悓浣滅敤鏃讹紝
R
涓婄殑鍔熺巼搴斾负
銆?/p>
4
锛庤嫢鐢甸樆涓婄數鍘?/p>
u
涓庣數娴?/p>
i
涓洪潪鍏宠仈鍙傝�冩柟鍚戯紝鍒欑數瀵?/p>
G
鐨勮〃杈惧紡
涓?/p>
銆?/p>
5
锛庡疄闄呯數鍘嬫簮涓庣悊鎯崇數鍘嬫簮鐨勫尯鍒湪浜庡疄闄呯數鍘嬫簮鐨勫唴
闃?/p>
銆?/p>
6
锛庣數鎰熷厓浠惰兘瀛樺偍
鑳?/p>
銆?/p>
9
锛庢寮︾ǔ鎬佺數璺腑
,
鏌愮數鎰熶袱绔數鍘嬫湁鏁堝�间负
20V
锛屾祦杩囩數娴佹湁鏁堝�?/p>
涓?/p>
2A
锛屾寮﹂噺鍛ㄦ湡
T
=
蟺
S
,
鍒欑數鎰熺殑鐢垫劅閲?/p>
L
锛?/p>
銆?/p>
10
锛庢寮︾ǔ鎬?/p>
L
锛?/p>
C
涓茶仈鐢佃矾涓?/p>
,
鐢靛鐢靛帇鏈夋晥鍊间负
8V ,
鐢垫劅鐢靛帇鏈夋晥鍊?/p>
涓?/p>
12V ,
鍒欐�荤數鍘嬫湁鏁堝�间负
銆?/p>
11
锛庢寮︾ǔ鎬佺數璺腑
,
涓�涓棤婧愬崟鍙ｇ綉缁滅殑鍔熺巼鍥犳暟涓?/p>
0. 5 ,
绔彛鐢靛帇
u(t)
锛?/p>
10cos (100t +
蠄
u) V
锛岀鍙ｇ數娴?/p>
i
(t) = 3 cos(100t - 10
掳
)A (u,
i
涓?/p>