Description
AC-DC Step-Down Transformer Power Supply Module 220V to 3.3V/5V/12V/24V
The AC-DC Step-Down Transformer Power Supply Module is a compact, efficient, and isolated power conversion solution designed to convert 220V AC mains input into stable low-voltage DC outputs. Using advanced precision buck conversion with electrical isolation, this module ensures safe, reliable, and low-ripple DC power for embedded systems and industrial electronics.
Available in 3.3V, 5V, 12V, and 24V output variants, this module is ideal for powering microcontrollers, IoT devices, sensors, relays, PLC inputs, automation systems, and control boards directly from AC mains—without bulky transformers.
Its small footprint, high efficiency, and built-in isolation make it suitable for both professional products and DIY electronics projects, especially where space and safety are critical.
Key Features
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🔌 Wide AC Input – 220V AC mains compatible
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⚡ Multiple DC Output Options – 3.3V / 5V / 12V / 24V
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🛡️ Electrical Isolation – Enhanced safety & noise immunity
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📉 Low Ripple & Noise – Clean DC output for sensitive electronics
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🔄 High Efficiency Buck Conversion – Reduced heat & power loss
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📦 Compact Module Design – Easy PCB integration
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🔥 Reliable & Stable Output – Suitable for continuous operation
Variants – Output Options
| Variant | Output Voltage | Typical Applications |
|---|---|---|
| AC-DC Module – 3.3V | 3.3V DC | ESP32, ESP8266, sensors, IoT |
| AC-DC Module – 5V | 5V DC | Arduino, logic circuits, USB power |
| AC-DC Module – 12V | 12V DC | Relays, motors, automation boards |
| AC-DC Module – 24V | 24V DC | PLCs, industrial control systems |