Watch This Gas Sensor Save the Day!
In this video, we design and simulate a Gas Leakage Detector Circuit using the MQ-2 Gas Sensor in Proteus.
This project demonstrates how to build a gas leakage alarm system that works directly from AC mains power (220V/110V) without using a transformer.
⚡ Power Supply Section
The circuit uses a transformerless capacitive power supply with a bridge rectifier and a 7805 voltage regulator to convert AC mains voltage to 5V DC, which powers the MQ-2 sensor and other components.
🔹 How It Works
The MQ-2 sensor detects gases such as LPG, methane, propane, or smoke.
When leakage is detected, the output activates a BC547 transistor, which drives a speaker alarm to alert users.
🔧 Components Used in This Simulation:
MQ-2 Gas Sensor
AC to DC Power Supply (Capacitor + Diodes + 7805 Regulator)
BC547 Transistor
Speaker / Buzzer
Resistors & Capacitors
This is a useful project for learning gas detection systems and power supply design in Proteus.
👉 If you enjoy this project, don’t forget to Like 👍, Share 📤, and Subscribe 🔔 for more Proteus simulation tutorials!
Telegram channel link:
https://t.me/electronic_simulation
Subscription Link:
/ @electronicsimulation9618
🌐 Check out my other channels:
/ @makercreative
/ @openpcb
/ @electronicsimulation9618
#MQ2GasSensor #GasLeakageDetector #ProteusSimulation #ElectronicsProjects