12V 3A Power Supply

📊 Typical Specifications (12 V 3 A SMPS Adapter)

Most 12 V 3 A AC-DC adapters and switching power supplies share these common specs:

🔋 Output: 12 V DC, up to 3 A (36 W)

💡 Input: 100 – 240 V AC, 50/60 Hz (universal mains)

📉 Ripple & Noise: typically <100 – 150 mVp-p

⚡ Protections: short-circuit, overload, over-voltage, over-temperature

🌡 Operating Temp: ~–10 °C to +60 °C

🔌 DC Connector: often 5.5 × 2.1 mm barrel jack, center positive

These supplies are typically switch-mode power supplies (SMPS) — efficient, compact, and suitable for powering LED lighting, CCTV, routers/modems, Arduino/ESP32 boards, and general 12-V devices.