「$useconstId」：修訂間差異
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已建立頁面，內容為 "Since DDCC solver is solved by input bias, therefore it is hard to obtain the exactly desired current density. $useconstId is a command for the program to get a cer..." |
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| （未顯示由 1 位使用者於中間所作的 2 次修訂） | |||
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The Ig_value is the current density of gate ( or Base). The unit is A/cm since it is 2D simulation. | The Ig_value is the current density of gate ( or Base). The unit is A/cm since it is 2D simulation. '''The Id is define as (Jpd-Jnd). Be careful about the sign.''' | ||
The simulation program need to set Vd = constant and Vd (VC) in a range. Vs (VE) can be treated as emitter. | The simulation program need to set Vd = constant and Vd (VC) in a range. Vs (VE) can be treated as emitter. | ||
The program will try in a Vd bias ranging from <math> Vd | The program will try in a Vd bias ranging from <math> Vd+V_{trial,min}<Vg< Vg+V_{trial,max} </math> in a minimum Vd interval Vd_step_min. | ||
Once the current error is within Precision | Once the current error is within Precision | ||
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$useconstId | $useconstId | ||
1.0e-3 -0.2 0.2 1.0e-4 1.0e-3 | 1.0e-3 -0.2 0.2 1.0e-4 1.0e-3 | ||
<br>'''<big><big>The $useconstId setting in GUI interface is here</big></big>''' <br> | |||
After setting up the general structure, press '''Material Parameter''' and fill in these fields!<br> | |||
[[檔案:2D_useconstId_fig1.jpg|1200px]] | |||
於 2024年10月2日 (三) 13:32 的最新修訂
Since DDCC solver is solved by input bias, therefore it is hard to obtain the exactly desired current density. $useconstId is a command for the program to get a certain Id value by tuning the bias itself to reach the required gate current. However, it is very time consuming.
$useconstId Id_value V_trial_min V_trial_max Vd_step_min Precision
The Ig_value is the current density of gate ( or Base). The unit is A/cm since it is 2D simulation. The Id is define as (Jpd-Jnd). Be careful about the sign.
The simulation program need to set Vd = constant and Vd (VC) in a range. Vs (VE) can be treated as emitter. The program will try in a Vd bias ranging from in a minimum Vd interval Vd_step_min. Once the current error is within Precision
For example $Schottky 1.4 $gatebias 0.9 0.9 0.01 $drainbias 0.5 5.0 0.5 $sourcebias 0.0 $useconstId 1.0e-3 -0.2 0.2 1.0e-4 1.0e-3
The $useconstId setting in GUI interface is here
After setting up the general structure, press Material Parameter and fill in these fields!
