Description
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Gdrive Link for Circuit Diagram- https://drive.google.com/file/d/1GHgw-8i-fVQJeOnlqOqpYDnaHS5vuCXI/view?usp=sharing
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In this video, learn how to build an easy and powerful DIY circuit that detects working and faulty transformers and inductors without opening the device casing!
Using an old ferrite core, salvaged copper wire, and a custom PCB, this compact handheld diagnostic tool uses magnetic switching feedback to show whether a component is active via an LED indicator. Perfect for troubleshooting phone chargers, SMPS power supplies, inductors, and coils in seconds.
⏱️ Timestamps:
0:00 - Breadboard Prototype & How It Works
0:21 - Building the Sensor Coil & PCB Design
1:18 - PCB Assembly & Component Soldering
3:15 - Testing with 3.7V Battery
3:52 - Working Demo- Charger & Inductor Testing (Contactless)
📌 Components Needed:
- Small Ferrite Toroid Core (from old SMPS / charger)
- Enamelled Copper Wire (8–10 turns)
- Transistors & Resistors
- Indicator LED
- 3.7V Li-ion Battery / Power Source
- Custom PCB
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