Adafruit
2.1mm DC Barrel Jack to Alligator Clips
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Turn any 2.1 mm barrel-jack wall adapter into a handy bench power supply with this adapter cable. The moulded DC barrel jack connects to your power supply, w...
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Turn any 2.1 mm barrel-jack wall adapter into a handy bench power supply with this adapter cable. The moulded DC barrel jack connects to your power supply, while colour-coded alligator clips (red for centre-positive, black for ring-negative) let you quickly clip onto bare wires, terminals, or test points.
Key Features
- 2.1 mm DC Barrel Jack – Fits standard centre-positive wall adapters
- Colour-Coded Alligator Clips – Red (positive) and black (negative) for easy identification
- Rated for 2–3 A – Handles up to 24 VDC
- Moulded Connector – Durable, high-quality barrel jack construction
Ideal For
- Quick bench power connections without a dedicated supply
- Prototyping and testing circuits with a wall adapter
- Powering LEDs, motors, and other components during development
Package Contents
- 1× 2.1 mm DC Barrel Jack to Alligator Clips Cable
Jargon buster
Plain-language definitions for the technical terms used above.
- DC barrel jack
- A round power connector commonly used for low-voltage DC power supplies, often described by its outer and inner diameters such as 5.5 x 2.1 mm. Matching the barrel size and polarity is important so the plug physically fits and powers the device correctly.
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