Simple MOSFET Tester DIY Project | Quick School Project & Repair Tool

DIY Simple MOSFET Tester — compact project for students & technicians

Simple MOSFET Tester DIY Project — Build & Test in Minutes

DIY School Project Electronics MOSFET Tester

Posted by GSM4Files

Want to check MOSFETs instantly? This Simple MOSFET Tester DIY Project is your next-gen solution — a tiny, low-cost, push-button circuit that reveals in seconds if a MOSFET is good or bad. Perfect for school projects and repair benches.

Parts Needed

• 1 × MOSFET (device under test)
• 1 × 5mm LED
• 2 × 1kΩ resistors
• 1 × Push button
• 9V–15V DC supply

How It Works

Press the push button and the MOSFET gate charges through a resistor. If it’s functional, current flows from Drain to Source, lighting the LED. No light = likely faulty MOSFET.

Step-by-Step Build

1. Place LED and resistors on breadboard or PCB.
2. Wire push button to supply and MOSFET gate.
3. Connect MOSFET drain to LED, source to ground.
4. Apply 9V–15V DC and press button to test.

Why This Project Rocks

✔ Ultra low cost • ✔ Easy to explain in class • ✔ Works with many N-channel MOSFETs • ✔ Compact and reusable

🔧 Build it today — Visit GSM4Files for more hidden electronics tricks!

Posted by GSM4Files · Learn, build & repair smarter.