電子電路這計算機要怎麼按阿

z24374203

就是刮起來那 我按電腦計算機都算不出來那括號的答案

avontube

Well, here is the way to do it:

The Germanium bandgap is 0.66 eV (Electron-Volt).  So, when you place the 0.66, you need to add the unit charge (1.6 X 10^(-19)) into the calculation.

The term (- E_G/(2kT)), k is the Boltzmann's constant, which is 1.38 X 10^(-23).  Then, the temperature, which is 300 K. Plug in all the numbers:

(-0.66 * 1.6 * 10^(-19)/(2*1.38*10^(-23)*300) will give you the correct answer.  
...

瀏覽完整內容，請先 註冊 或 登入會員

avontube

On the second thought that, you may have mistaken the "EXP" as the "EXP" key on your Casio calculator (which is for 10^x).  The "EXP" is actually the EXPonential (e^x).

z24374203

回復

下載: 訪客無法瀏覽下載點，請先 註冊 或 登入會員

avontube


    我把我刮起來的先算出來 然後exp跑出來的答案不是答案

avontube

回復

下載: 訪客無法瀏覽下載點，請先 註冊 或 登入會員

z24374203

How did you do the "EXP" operation? what key did you press on your calculator? My calculator gave me the correct answer.

z24374203

回復

下載: 訪客無法瀏覽下載點，請先 註冊 或 登入會員

avontube


    我把我刮起來的先算出來 然後按EXP 答案不是哩 我用電腦計算機的

anothersider

你用的windows裡面的計算器嗎？那個EXP是10^的意思啦，就是你按1EXP4會出現10000.你點下計算器裡面的INV，ln那裡就會變成e^x,這樣就能算了

z24374203

回復

下載: 訪客無法瀏覽下載點，請先 註冊 或 登入會員

anothersider


    原來如此 我試試看 沒想到電腦的計算機和一般計算機差別這麼大

avontube

It is the same on the Casio calculator.  "EXP" key means "10^x"  Use "e^x" to solve the intrisic carrier concentration equation. Try to master your calculator tool which is very much essential to all the calculation you will do in future.

Sigh!!!