DC Polarity Tester

Sun, 24 May 2026 23:55:06 +0000

⚡ DC Polarity Tester Circuit | Easy DIY Electronics Project 🔋

In this video, learn how to make a simple and useful DC Polarity Tester Circuit using basic electronic components. This circuit helps identify positive (+) and negative (-) terminals of any DC power supply quickly and safely. Perfect for beginners, electronics students, and DIY enthusiasts.

🔧 Components Used:
• LED
• Resistors
• Diodes
• Battery / DC Supply
• PCB or Breadboard

📌 Features:
✔️ Easy to build
✔️ Low cost circuit
✔️ Useful for testing DC polarity
✔️ Beginner-friendly electronics project

📚 In this tutorial:
• Circuit diagram explanation
• Component connection
• Working principle
• Live testing demonstration

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