Arduino Power Supply Adapter 9V 1A

Dedicated 9V 1A Output: Converts household AC power into a regulated 9V DC output up to 1A (9W max), serving as the ideal external power source for Arduino board development without relying on USB power.

Standard 5.5mm x 2.1mm Center-Positive Plug: Equipped with a standard barrel jack connector engineered to plug directly into Arduino Uno, Mega, and Leonardo onboard DC power sockets.

Universal Mains AC Input Compatibility: Accepts input grid voltage ranging from 100V to 240V AC (50/60Hz) for plug-and-play operation across global power outlets.

Insulated & Shock-Safe Housing: Fully sealed, flame-retardant ABS plastic wall-plug enclosure provides complete insulation against high-voltage hazards.

Silent & Energy-Efficient Operation: Fan-less solid-state design delivers completely noiseless, low-heat operation with stable output voltage ripple control.

Multi-Layer Safety Protections: Integrated circuitry guards connected microcontrollers against output short circuits, over-current, and input voltage surges.

Housing & Casing Style: Fully encapsulated, flame-retardant ABS plastic casing designed for safe indoor wall outlet mounting.

Contact & Connector Style: EU standard 2-pin AC wall plug with integrated DC cable terminating in a center-positive 5.5mm x 2.1mm barrel jack connector.

Technical Specifications:

Input Voltage: AC $100\text{V}\text{–}240\text{V}$ ($50\text{/}\text{60Hz}$).

Output Voltage: DC 9V.

Output Current: 0A – 1A Max (1000mA).

Rated Power: 9W.

Plug Polarity: Center-Positive (+ inside, - outside).

Cooling: Passive air convection via enclosed housing.

Color: Black.

Usage Advice: Calculate continuous board and shield power requirements to stay within 80% of total rated capacity (0.8A / 7.2W). Plug directly into the onboard barrel jack of compatible 9V logic development boards.

Maintenance: Keep the adapter body clean and free of dust. Designed for indoor desktop/bench use; keep away from high humidity and direct liquid exposure.

Essential Arduino Companion Power Supply: Position as the indispensable plug-and-play wall adapter for powering Arduino Uno, Mega 2560, and Leonardo boards when running standalone projects away from a PC USB port.

Highlight Direct Barrel Plug Fit & 9V Voltage Rail: Emphasize that 9V DC is the optimal voltage for Arduino onboard linear regulators (bypassing the 5V USB power limit without causing excessive thermal dissipation).

Recommended Cross-Sell Add-ons: Pair with Power supply Adapter 9V 2A, Power Supply Adapter 5V 3A, Power supply Adapter 12V 1A, and ESD antistatic mat 50x40CM PCB Welding Mat.

Featured Collection Star: Display prominently on your Power Supply Adapter collection page as the premier development board wall power adapter.