Chip123 科技應用創新平台
標題:
an interview question
[打印本頁]
作者:
taofeng
時間:
2009-5-5 01:22 AM
標題:
an interview question
hi,
( t" P. @ L Y: e* k5 G$ t
attached is an interview question ! interesting reader can have a look and discuss it.
+ _( |/ c0 x+ `7 P
9 A# s: Q/ y) J- P6 M
regards,
1 J8 Z- E, R) [. u8 {
( M& o& n- r C9 s9 G$ A
jef
作者:
cirand
時間:
2009-5-5 09:04 AM
Vbe=0.7, 流过base的电流很小，可以忽略，故而Vce=0.7X10/7=1V
作者:
taofeng
時間:
2009-5-5 03:14 PM
what if Ibase is not so small ??
( m% @, ]: d; r- v9 w6 o) J# {
& m1 z( _* \. w& t6 z# |6 o5 B
regards,
作者:
jesseyu
時間:
2009-5-6 04:23 PM
I's not like that, the VBE is not necessarily 0.7V in such configuration. ICE=(0.7VCE/Rb)*Beta, then IR=I-ICE. Just my opinion
作者:
kukyxu
時間:
2009-5-14 08:47 AM
Vbe=0.7, 流过base的电流很小，可以忽略，故而Vce=0.7X10/7=1V
0 p& T; L+ F" W1 A0 @% G
kankan la
作者:
kj.guo
時間:
2009-5-15 09:33 PM
这是一个self bias 的结构，通常Ib可以忽略，Vbe=0.7v，所以Vce=1v
歡迎光臨 Chip123 科技應用創新平台 (http://chip123.com/)
Powered by Discuz! X3.2