[問題] LED特性
VCC
|
▼
|
▼
|
▼
|
IC
當LED串接時,落在IC上的電壓0.8時的VCC與0.3時的VCC,兩電壓相減
好像會隨著LED種類而不同
我用一般市面上的大顆的
http://0rz.tw/d0467
VCC_0.8 - VCC_0.3 = 6V
VCC_0.8 - VCC_0.2 = 11V
VCC_0.8 - VCC_0.1 = 15V
與0603這種小顆的
http://0rz.tw/2a48X
VCC_0.8 - VCC_0.3 = 1V
VCC_0.8 - VCC_0.2 = 1.2V
VCC_0.8 - VCC_0.1 = 1.1V
下面這種0.3~0.1與0.8都很接近,這是為什麼呢??
另外,當VCC < VF時,為什麼落在IC上,通常都是0.2V而不是0V???
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 123.195.194.110
推
05/20 22:55, , 1F
05/20 22:55, 1F
→
05/20 23:23, , 2F
05/20 23:23, 2F
※ 編輯: BlueFeel 來自: 123.195.194.110 (05/20 23:27)
推
05/25 10:03, , 3F
05/25 10:03, 3F
→
05/25 10:04, , 4F
05/25 10:04, 4F
→
05/25 10:05, , 5F
05/25 10:05, 5F
→
05/25 10:05, , 6F
05/25 10:05, 6F
→
05/25 10:05, , 7F
05/25 10:05, 7F
→
05/26 00:34, , 8F
05/26 00:34, 8F
→
05/26 00:35, , 9F
05/26 00:35, 9F
→
05/26 00:36, , 10F
05/26 00:36, 10F