[問題] 98鐵特三等電子學
這題是98鐵特高員級電子學的第三題
由於小弟不擅繪圖與設定連結 我的疑問也不需以圖說明
故簡述如下
題目給定幾個參數
Vgs=4V 時 Id=200m Vt=2V gm=23mS
首先我認為K是定值 故 Id=K(Vgs-Vt)^2 可以得到K=50m
但是 代入 gm=2(Id*K)^1/2 就矛盾了(gm不會等於23m)
如果代 gm=2K(Vgs-Vt) 求K 這時 K=5.75m
赫然又得到不同的K值 請問這邊的算法哪裡有錯呢
難道K值不是不變的?
感謝回答!!!
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 114.32.213.53
推
03/14 20:04, , 1F
03/14 20:04, 1F
→
03/14 20:07, , 2F
03/14 20:07, 2F
推
03/14 20:08, , 3F
03/14 20:08, 3F
→
03/14 20:09, , 4F
03/14 20:09, 4F
推
03/14 20:13, , 5F
03/14 20:13, 5F
→
03/14 20:13, , 6F
03/14 20:13, 6F
推
03/14 22:16, , 7F
03/14 22:16, 7F
→
03/14 22:20, , 8F
03/14 22:20, 8F
→
03/14 22:27, , 9F
03/14 22:27, 9F
推
03/14 22:37, , 10F
03/14 22:37, 10F
→
03/14 22:47, , 11F
03/14 22:47, 11F
→
03/14 22:47, , 12F
03/14 22:47, 12F
→
03/14 22:51, , 13F
03/14 22:51, 13F
推
03/14 22:56, , 14F
03/14 22:56, 14F
推
03/14 23:15, , 15F
03/14 23:15, 15F
→
03/14 23:18, , 16F
03/14 23:18, 16F
→
03/14 23:18, , 17F
03/14 23:18, 17F
→
03/14 23:21, , 18F
03/14 23:21, 18F
→
03/14 23:22, , 19F
03/14 23:22, 19F
→
03/14 23:24, , 20F
03/14 23:24, 20F
→
03/14 23:25, , 21F
03/14 23:25, 21F
推
03/14 23:26, , 22F
03/14 23:26, 22F
→
03/14 23:27, , 23F
03/14 23:27, 23F
→
03/14 23:28, , 24F
03/14 23:28, 24F
→
03/15 07:21, , 25F
03/15 07:21, 25F
→
03/15 07:22, , 26F
03/15 07:22, 26F
Examination 近期熱門文章
PTT職涯區 即時熱門文章
25
51
-26
177