1
鐢垫祦琛ㄣ�佺數鍘嬭〃鐨勬敼瑁?/p>
涓�銆佸熀纭�鐭ヨ瘑
1
銆佺數鍘嬭〃鐢垫祦琛ㄧ殑鏀硅
锛?/p>
1
锛夌數娴佽〃
G
锛堣〃澶达級
鍘熺悊鍜屼富瑕佸弬鏁?/p>
鐢垫祦琛?/p>
G
锛堣〃澶达級
鎸囬拡鐨勫亸杞
胃
涓庣數娴佸己搴?/p>
I
鎴愭姣旓紝
鏁呰〃鐨勫埢搴︽槸鍧囧寑鐨?/p>
.
鐢垫祦琛ㄧ殑
涓昏鍙傛暟锛氳〃澶村唴闃?/p>
R
g
锛屾弧鍋忕數娴?/p>
I
g
锛屾弧鍋忕數鍘?/p>
U
g
銆?/p>
U
g
锛?/p>
I
g
R
g
.
锛?/p>
2
锛夋敼瑁呮垚鐢靛帇琛?/p>
鏂规硶锛氫覆鑱斾竴涓垎鍘嬬數闃?/p>
R
锛屽鍥炬墍绀猴紝鑻ラ噺绋嬫墿澶?/p>
n
鍊嶏紝鍗?/p>
n
锛?
g
U
U
锛屽垯鏍规嵁鍒嗗帇鍘熺悊锛岄渶涓茶仈鐨勭數闃诲�?/p>
R
锛?/p>
g
U
U
R
R
g
锛?/p>
(
n
锛?/p>
1)
R
g
锛?
鏁呴噺绋嬫墿澶х殑鍊嶆暟瓒婇珮锛屼覆鑱旂殑鐢甸樆鍊艰秺澶?/p>
.
锛?/p>
3
锛夋敼瑁呮垚閲忕▼鐢垫祦琛?/p>
鏂规硶锛氬苟鑱斾竴涓垎娴佺數闃?/p>
R
锛屽鍥炬墍绀猴紝鑻ラ噺绋嬫墿澶?/p>
n
鍊嶏紝鍗?/p>
n
锛?
g
I
I
锛屽垯鏍规嵁骞惰仈鐢佃矾鐨勫垎娴佸師鐞嗭紝闇�瑕佸苟鑱旂殑鐢甸樆鍊?/p>
R
锛?
R
I
I
g
R
g
锛?
1
g
飥?/p>
n
R
锛屾晠閲忕▼鎵╁ぇ鐨勫�嶆暟瓒婇珮锛屽苟鑱旂殑鐢甸樆鍊艰秺灏?/p>
.
浜屻�佺粌涔?/p>
1
銆佸叧浜庣數鍘嬭〃鍜岀數娴佽〃锛屼笅鍒楄娉曚腑姝ｇ‘鐨勬槸
(
)
A
.
鐞嗘兂鐨勭數鍘嬭〃鍜岀數娴佽〃鐨勫唴闃讳笉璁★紝鏄洜涓哄畠浠兘涓洪浂
B
.
鐞嗘兂鐨勭數鍘嬭〃鍜岀數娴佽〃鐨勫唴闃讳笉璁★紝鏄洜涓哄畠浠兘鏋佸ぇ
C
.
鐞嗘兂鐨勭數鍘嬭〃鍐呴樆鏋佸ぇ锛岀數娴佽〃鍐呴樆涓洪浂
D
.
鍦ㄧ數璺腑锛岀悊鎯崇殑鐢靛帇琛ㄥ彲瑙嗕负鐭矾锛岀悊鎯崇殑鐢垫祦琛ㄥ彲瑙嗕负寮�璺?/p>
绛旀锛?/p>
C
2
銆佷竴鐢垫祦琛ㄧ殑婊″亸鐢垫祦
I
g
=1mA
锛屽唴闃讳负
200
惟銆傝鎶婂畠鏀硅鎴愪竴涓噺绋嬩负
0.5A
鐨勭數娴佽〃锛?/p>
鍒欏簲鍦ㄧ數娴佽〃涓婏紙
锛?/p>
A
锛庡苟鑱斾竴涓?/p>
200
惟鐨勭數闃?/p>
B
锛庡苟鑱斾竴涓?/p>
0.4
惟鐨勭數闃?/p>
C
锛庝覆鑱斾竴涓?/p>
0.4
惟鐨勭數闃?/p>
D
锛庝覆鑱斾竴涓?/p>
200
惟鐨勭數闃?/p>
鍒嗘瀽锛?/p>
瑕佷娇鐢垫祦琛ㄩ噺绋嬪彉涓?/p>
0.5A
锛?/p>
鍒欐祦杩囧苟鑱旂數闃荤殑鐢垫祦
I=0.5-0.001A=0.499A
锛?/p>
骞惰仈閮ㄥ垎鐨勭數鍘?/p>
U=I
g
R=0.001
脳
200
惟
=0.2V
锛?/p>
鍒欓渶瑕佸苟鑱旂殑鐢甸樆
r=U/I=0.2/0.499=0.4
惟
鏁呴�?/p>
B
锛?/p>
3
銆佷竴鐢垫祦琛ㄧ殑婊″亸鐢垫祦涓?/p>
I
g
=50
渭
A
锛?/p>
鍐呴樆
R
g
=2k
惟锛?/p>
缁欏畠骞惰仈涓�涓?/p>
0.02
惟鐨勭數闃诲悗锛?/p>
鍏堕噺绋?/p>
灏嗚揪鍒?/p>
A
銆?/p>
绛旀锛?/p>
10A
4
銆佷竴涓數娴佽〃鐨勬弧鍋忕數娴?/p>
I
g
=1mA
锛屽唴闃?/p>
R
g
=500
锛岃鎶婂畠鏀硅鎴愪竴涓噺绋嬩负
10V
鐨勭數鍘嬭〃锛?/p>
鍒欏簲鍦ㄧ數娴佽〃涓婏紙
锛?/p>