The AC-DC 70W Isolated Power Module is a compact, high-efficiency switching power supply board designed to convert AC mains voltage (110V–245V) into a regulated 12V DC output. With a continuous current rating of 4A and a maximum peak current of 6A, this module delivers up to 70W of peak power (50W continuous), making it an ideal solution for powering LED lighting, industrial control equipment, embedded systems, and DIY electronics projects.
At the heart of the module is a high-frequency switching power supply circuit with isolated output, ensuring safe separation between the AC mains input and the DC output. This isolation protects both the connected equipment and the user from electrical hazards, making the module suitable for applications where safety and reliability are critical.
The module features a wide AC input voltage range of 110V to 245V, making it compatible with mains power in most regions worldwide, including North America (120V) and Europe/Asia (220V–240V). This universal input capability simplifies inventory management for businesses and ensures reliable operation across different power grids.
The 12V DC output is regulated and filtered for stable performance, suitable for powering:
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LED lighting systems and strips
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Industrial control equipment
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Embedded systems and microcontrollers
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Relays, solenoids, and small motors
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Audio amplifiers and communication devices
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DIY electronics and prototyping projects
The module includes comprehensive protection circuits:
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Overcurrent protection — Prevents damage from excessive load current
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Short-circuit protection — Safely shuts down under fault conditions
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Overvoltage protection — Protects connected equipment from voltage spikes
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Thermal shutdown — Prevents overheating under sustained high-load operation
The bare board design allows for flexible integration into custom enclosures, equipment chassis, and control panels. The module features screw terminals for secure AC input and DC output connections, with clearly labeled terminals for safe wiring. LED indicators provide visual feedback for power status.
The module is widely used in LED lighting, industrial automation, security systems, communication equipment, embedded systems, DIY power supplies, and any application requiring a reliable, isolated 12V DC power source from AC mains.
Important Safety Note: This module operates from AC mains voltage (110V–245V). Proper safety precautions must be taken during installation and use. Ensure all connections are secure and properly insulated. Do not touch the board while powered. If you are not experienced with AC mains wiring, consult a qualified professional.
Whether you are building a custom LED lighting system, powering industrial control equipment, or developing a product requiring an isolated 12V supply, the AC-DC 70W Isolated Power Module provides a reliable, efficient solution. It is suitable for individual makers, engineers, and businesses purchasing in bulk for product development or industrial applications.
Features
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AC 110V–245V universal input — Compatible with mains power worldwide
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12V DC regulated output — Stable, filtered power for sensitive electronics
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4A continuous / 6A peak — Up to 70W peak power
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Isolated output — Safe separation between AC input and DC output
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High efficiency — Switching design minimizes power loss and heat
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Comprehensive protection — Overcurrent, short-circuit, overvoltage, thermal shutdown
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Bare board design — Flexible integration into custom enclosures
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Screw terminals — Secure AC input and DC output connections
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LED indicators — Power status feedback
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Wide application range — LED lighting, industrial control, embedded systems, DIY projects
Technical Specifications
| # | Parameter | Specification |
|---|---|---|
| 1 | Module Type | AC-DC isolated switching power supply |
| 2 | Input Voltage | AC 110V – 245V |
| 3 | Output Voltage | DC 12V |
| 4 | Continuous Output Current | 4A |
| 5 | Peak Output Current | 6A |
| 6 | Maximum Output Power | 70W peak / 50W continuous |
| 7 | Isolation | Yes (AC to DC) |
| 8 | Protection | Overcurrent, short-circuit, overvoltage, thermal shutdown |
