The Adjustable DC Power Supply 3V-12V 5A is a high-current, versatile power adapter designed for demanding electronics projects, LED lighting, CCTV systems, and DIY applications. With an adjustable output voltage from 3V to 12V DC and a maximum current of 5A, this power supply delivers substantially more power than standard 1A or 2A adapters, making it ideal for powering multiple devices, high-power LED strips, and equipment requiring higher current. The LED display provides real-time voltage readout, and the included free DC female connector ensures easy connection to your project.
At the heart of the adapter is a high-efficiency switching power supply circuit that converts AC mains input to a stable, adjustable DC output. The output voltage is set via a rotary selector switch or potentiometer, with the LED display showing the current voltage setting. This makes it easy to dial in the exact voltage you need for your application.
The 5A maximum output current provides ample power for:
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High-power LED strips — Power 5V or 12V LED strips with multiple meters
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CCTV systems — Power multiple 12V security cameras and DVRs
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LED displays and signage — Power high-current LED modules
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DIY electronics — Prototype circuits requiring higher current
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Arduino and microcontroller projects — Power boards with multiple peripherals
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Audio equipment — Power amplifiers and audio devices
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Network devices — Power routers, switches, and PoE injectors
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Testing and measurement — Bench power for circuit testing
The adapter features a standard DC barrel jack output (typically 5.5mm × 2.1mm) and includes a free DC female connector for easy connection to your project. The LED display shows the current voltage setting, and the compact design makes it suitable for bench use and equipment integration.
The adapter includes built-in protection circuits including overcurrent protection, short-circuit protection, and over-temperature protection, ensuring safe and reliable operation.
Important Note: The 5A maximum output current is shared across all voltage settings. At higher voltages (e.g., 12V), the maximum current may be limited by the total power rating. Always verify the voltage and current requirements of your device before connecting. The output voltage should be set before connecting sensitive devices.
Whether you are powering high-power LED strips, multiple CCTV cameras, or testing a prototype circuit, the Adjustable DC Power Supply 3V-12V 5A provides a flexible, high-current solution. It is suitable for individual makers, engineers, and businesses purchasing in bulk for product development or commercial applications.
Features
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Adjustable output voltage — 3V to 12V DC via rotary switch or potentiometer
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5A maximum output current — High-current capability for demanding loads
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LED display — Real-time voltage readout for precise adjustment
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Standard DC barrel jack output — 5.5mm × 2.1mm (typical)
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Free DC female connector included — Ready to connect to your project
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Built-in protection — Overcurrent, short-circuit, and over-temperature protection
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Compact and lightweight — Suitable for bench, travel, and equipment integration
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Wide application range — LED strips, CCTV, LED displays, Arduino, audio, network devices
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High power output — Up to 60W total output power
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Easy voltage selection — Rotary switch or potentiometer for quick adjustment
Technical Specifications
| # | Parameter | Specification |
|---|---|---|
| 1 | Input Voltage | AC 100V – 240V (universal) |
| 2 | Output Voltage | 3V – 12V DC (adjustable) |
| 3 | Maximum Output Current | 5A |
| 4 | Maximum Output Power | Up to 60W |
| 5 | Display | LED voltage display |
| 6 | Output Connector | DC barrel jack (5.5mm × 2.1mm typical) |
| 7 | Included Connector | Free DC female connector |
| 8 | Protection | Overcurrent, short-circuit, over-temperature |
