ChatGPT said: A 12V 2A Adaptor (also written as 12V 2Amp Power Supply) is a device that converts the AC (Alternating Current) electricity from your wall socket into a stable DC (Direct Current) supply of 12 volts with a maximum output current of 2 amperes. Here’s a detailed explanation: 🔌 Basic Information Input Voltage: Usually 100–240V AC, 50/60Hz (works worldwide). Output Voltage: 12V DC (Direct Current). Output Current: Up to 2A (2000mA). Power Rating: Voltage × Current = 12V × 2A = 24W. ⚙️ Key Features Voltage (12V) Fixed at 12 volts DC. Used to power devices that specifically require 12V regulated DC. Current (2A) The adaptor can provide up to 2 amperes of current. Devices will only draw as much current as they need. Example: If your circuit consumes 1A, the adaptor will supply 1A. If it consumes 2A, the adaptor can still handle it. Connector Usually comes with a barrel jack (5.5mm outer / 2.1mm inner), center-positive. Some may use other types depending on the device. Polarity Most common: Center Positive (+), Outer Negative (–). Always check before connecting. Wrong polarity may damage the device. 🛠️ Applications A 12V 2A adaptor is widely used for: Arduino / Raspberry Pi projects (with motor shields, sensors, etc.) Routers, Modems, and Network devices CCTV Cameras LED strips and LED lamps Portable speakers, amplifiers Small appliances or instruments requiring 12V DC power 🔒 Safety Considerations Do not overload it (never connect a device requiring more than 2A). Ensure correct polarity before plugging in. Use in a well-ventilated area to avoid overheating. For sensitive electronics, prefer an SMPS regulated adaptor (most modern 12V adaptors are regulated).