NMOS I-V Curve Explorer

An interactive web application for exploring the I-V characteristics of an NMOS transistor. The application provides both 3D and 2D visualizations of the transistor's behavior.

Features

• Interactive 3D surface plot showing the relationship between drain current (I_D), drain-source voltage (V_DS), and gate-source voltage (V_GS)
• 2D projection plots for fixed V_DS or V_GS values
• Real-time updates as you change parameters
• User-friendly interface with intuitive controls

Setup

1. Create a virtual environment (recommended):

python -m venv venv
source venv/bin/activate  # On Windows, use: venv\Scripts\activate

2. Install the required packages:

pip install -r requirements.txt

Running the Application

To start the application, run:

streamlit run app.py

The application will open in your default web browser. If it doesn't, you can access it at http://localhost:8501

Usage

1. Use the sidebar controls to select whether you want to fix V_DS or V_GS
2. Enter the desired value for the fixed parameter
3. The 2D plot will update automatically to show the corresponding I-V curve
4. Interact with the 3D plot using your mouse to rotate, zoom, and pan

Model Details

The application uses the ideal square-law model for NMOS transistors with the following parameters:

• Threshold voltage (Vth) = 1.0V
• Process transconductance parameter (k) = 100e-6 A/V²