路
6
路
绗?/p>
2
绔?/p>
鍗婂浣撲笁鏋佺鍙婂叾鍩烘湰鏀惧ぇ鐢佃矾
涓�銆佸～绌洪
2
锛?/p>
1 BJT
鐢ㄦ潵鏀惧ぇ鏃讹紝搴斾娇鍙戝皠缁撳浜?/p>
鍋忕疆锛岄泦鐢电粨澶勪簬
鍋忕疆锛涜�屽伐浣滃湪楗?/p>
鍜屽尯鏃讹紝鍙戝皠缁撳浜?/p>
鍋忕疆锛岄泦鐢电粨澶勪簬
鍋忕疆銆?/p>
2
锛?/p>
2
娓╁害鍗囬珮鏃讹紝
BJT
鐨勭數娴佹斁澶х郴鏁?/p>
飦?/p>
锛屽弽鍚戦ケ鍜岀數娴?/p>
CBO
I
锛?/p>
鍙戝皠缁撶數鍘?/p>
BE
U
銆?/p>
2
锛?/p>
3
鐢ㄤ袱涓斁澶х數璺?/p>
A
鍜?/p>
B
鍒嗗埆瀵瑰悓涓�涓數鍘嬩俊鍙疯繘琛屾斁澶э紝褰撹緭鍑虹寮�璺椂锛?
OB
OA
U
U
飥?/p>
锛涢兘鎺ヤ汉璐熻浇
L
R
鐢甸樆鏃讹紝娴嬪緱
OB
OA
U
U
飪?/p>
锛岀敱姝よ鏄庯紝鐢佃矾
A
鐨勮緭鍑虹數闃绘瘮鐢?
璺?/p>
B
鐨勮緭鍑虹數闃?/p>
銆?/p>
2
锛?/p>
4
瀵逛簬鍏卞皠銆佸叡闆嗗拰鍏卞熀涓夌鍩烘湰缁勬�佹斁澶х數璺紝鑻ュ笇鏈涚數鍘嬫斁澶у�嶆暟澶э紝鍙�夌敤
缁勬�侊紱鑻ュ笇鏈涘甫璐熻浇鑳藉姏寮猴紝搴旈�夌敤
缁勬�侊紱鑻ュ笇鏈涗粠淇″彿婧愮储鍙栫數娴佸皬锛屽簲閫?/p>
鐢?/p>
缁勬�侊紱鑻ュ笇鏈涢珮棰戞�ц兘濂斤紝搴旈�夌敤
缁勬�併�?/p>
2
锛?/p>
5
FET
鏄�氳繃鏀瑰彉
鏉ユ敼鍙樻紡鏋佺數娴?/p>
(
杈撳嚭鐢垫祦
)
鐨勶紝
鎵�浠ュ畠鏄竴涓?/p>
鍣ㄤ欢銆?/p>
2
锛?/p>
6 FET
宸ヤ綔鍦ㄥ彲鍙樼數闃诲尯鏃讹紝
D
i
涓?/p>
DS
u
鍩烘湰涓婃槸
鍏崇郴锛屾墍浠ュ湪杩欎釜鍖哄煙涓紝
FET
鐨?/p>
d
銆?/p>
s
鏋侀棿鍙互鐪嬫垚涓�涓敱
GS
u
鎺у埗鐨?/p>
銆?/p>
2
锛?/p>
7 FET
鐨勮嚜鍋忓帇鐢佃矾鍙�傜敤浜?/p>
鏋勬垚鐨勬斁澶х數璺紱
鍒嗗帇寮忚嚜鍋忓帇鐢佃矾涓殑鏍?
鏋佺數闃?/p>
S
R
涓�鑸樆鍊煎緢澶э紝杩欐槸涓轰簡
銆?/p>
浜屻�侀�夋嫨姝ｇ‘绛旀濉啓
(
鍙渶閫夊～鑻辨枃瀛楁瘝
)
2
锛?/p>
8 BJT
鑳借捣鏀惧ぇ浣滅敤鐨勫唴閮ㄦ潯浠堕�氬父鏄細
(1)
鍙戝皠鍖烘幒鏉傛祿搴?/p>
(a
1
锛庨珮锛?/p>
b
1
锛庝綆锛?/p>
c
1
锛庝竴鑸?/p>
)
锛?/p>
(2)
鍩哄尯鏉傝川娴撳害姣斿彂灏勫尯鏉傝川娴撳害
(a
2
锛庨珮锛?/p>
b
2
锛庝綆锛?/p>
c
2
锛庣浉鍚?/p>
)
锛屽熀鍖哄搴?/p>
(a
3
锛庨珮锛?/p>
b
3
锛庣獎锛?/p>
c
3
锛庝竴鑸?/p>
)
锛涢泦鐢电粨闈㈢Н姣斿彂灏勭粨闈㈢Н
(a
4
锛庡ぇ锛?/p>
b
4
锛庡皬锛?/p>
c
4
锛庣浉绛?/p>
)
銆?/p>
2
锛?/p>
9
娴嬪緱
BJT I
B
=30
渭
A
鏃讹紝
I
C
=2.4 mA
锛?/p>
I
B
=40
渭
A
鏃讹紝
I
C
=3 mA
锛屽垯璇ョ鐨勪氦娴佺數娴?/p>
鏀惧ぇ绯绘暟
飦?/p>
涓?/p>
(a
锛?/p>
80
锛?/p>
b
锛?/p>
60
锛?/p>
c
锛?/p>
75)
銆?/p>
2
锛?/p>
10
鐢ㄤ竾鐢ㄨ〃鍒ゅ埆鏀惧ぇ鐢佃矾涓浜庢甯稿伐浣滅殑鏌愪釜
BJT
鐨勭被鍨?/p>
(
鎸?/p>
NPN
鍨嬭繕鏄?/p>
PNP
鍨?/p>
)
涓庝笁涓數鏋佹椂锛屼互娴嬪嚭
鏈�涓烘柟渚?/p>
(a
锛庡悇鏋侀棿鐢甸樆锛?/p>
b
锛庡悇鏋佸鍦扮數浣嶏紝
c
锛庡悇鏋佺數娴?/p>
)
銆?/p>
2
锛?/p>
11
鏃㈣兘鏀惧ぇ鐢靛帇锛?/p>
涔熻兘鏀惧ぇ鐢垫祦鐨勬槸
缁勬�佹斁澶х數璺紱
鍙互鏀惧ぇ鐢靛帇锛?/p>
浣嗕笉
鑳芥斁澶х數娴佺殑鏄?/p>
缁勬�佹斁澶х數璺紱鍙兘鏀惧ぇ鐢垫祦锛屼絾涓嶈兘鏀惧ぇ鐢靛帇鐨勬槸
缁勬�佹斁澶х數璺?/p>
(a
锛庡叡灏勶紝
b
锛庡叡闆嗭紝
c
锛庡叡鍩?/p>
)
銆?/p>
2
锛?/p>
12
鏌?/p>
FET
鐨?/p>
I
DSS
涓?/p>
6 mA
锛?/p>
鑰?/p>
I
DQ
鑷紡鏋佹祦鍑猴紝
澶у皬涓?/p>
8 mA
锛?/p>
鍒欒绠℃槸
(a
锛?/p>
P
娌熼亾
JFET
锛?/p>
b
锛?/p>
N
娌熼亾
JFET
锛?/p>
c
锛?/p>
P
娌熼亾鑰楀敖鍨?/p>
IGFET
锛?/p>
d
锛?/p>
N
娌熼亾鑰楀敖鍨?/p>
IGFET
锛?/p>
e
锛?/p>
P
娌熼亾
澧炲己鍨?/p>
IGFET
锛?/p>
f
锛?/p>
N
娌熼亾澧炲己鍨?/p>
IGFET)
銆?/p>
2
锛?/p>
13
P
娌熼亾澧炲己鍨?/p>
IGFET
鐨勫紑鍚數鍘?/p>
)
(
th
GS
U
涓?/p>
(a
1
锛?/p>
姝ｅ�硷紝
b
1
锛?/p>
璐熷�硷紝
c
1
锛?/p>
闆?