PW28 Dual Power Filter Amplifier Board 25A Rectifier DIY Kit
PW28 Dual Power Filter Amplifier Board 25A Rectifier DIY Kit
PW28 Dual Power Filter Power Amplifier Board – 25A High-Current Rectifier DIY Kit
Take your DIY audio and electronics projects to the next level with the PW28 Dual Power Filter Power Amplifier Board. Designed for hobbyists, engineers, and electronics enthusiasts, this high-current 25A flat bridge rectifier board delivers stable, unregulated dual-rail DC power — ideal for powering amplifiers, audio equipment, and custom electronics builds.
Made in Mainland China.
Key Features
- High-Current Capacity: Supports up to 25A continuous current, suitable for demanding amplifier and power supply applications.
- Dual Power Rail: Provides symmetrical positive and negative DC output for balanced power amplifier circuits.
- Wide Input Voltage Range: Accepts dual AC input of AC 3–17V for flexible transformer compatibility.
- Full-Wave Flat Bridge Rectifier: Efficient rectification with low ripple for cleaner DC output.
- Built-In Filter Capacitor Section: Onboard filter stage smooths DC output, reducing noise and improving audio fidelity.
- Wide Operating Temperature: Rated from -40°C to +85°C for reliable performance in varied environments.
- DIY Kit Format: Comes as a complete kit — perfect for hands-on builders who want to learn and customize.
- Compact & Robust PCB: High-quality board construction for long-lasting, dependable performance.
Specifications
- Model: PW28
- Input Voltage: Dual AC, AC 3–17V
- Max Current: 25A
- Type: Unregulated Dual Power Supply with Filter
- Operating Temperature: -40°C to +85°C
- Package: DIY Kit (1 x Board)
- Condition: New
- Country of Origin: Made in Mainland China
What's in the Box?
- 1 × PW28 Dual Power Filter Amplifier Board (DIY Kit)
Who Is This For?
This board is ideal for DIY audio amplifier builders, electronics students, and hobbyists looking to build a reliable dual-rail power supply for class A/B amplifiers, preamplifiers, or other dual-supply electronic circuits.
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Frequently Asked Questions
Q: What type of transformer do I need to use with the PW28 dual power filter board?
A: The PW28 board accepts a dual AC input voltage of AC 3–17V. You will need a center-tapped toroidal or EI transformer with a secondary winding that provides dual AC rails within this voltage range. Make sure your transformer can handle the current demand of your amplifier circuit, up to 25A maximum for this board.
Q: Is this board suitable for powering a stereo audio amplifier?
A: Yes! The PW28 dual power filter amplifier board is specifically designed for audio amplifier applications. Its dual-rail output (positive and negative DC) is perfectly suited for class A, class AB, and other symmetrical amplifier designs. The onboard filter capacitor section further reduces ripple, helping to deliver cleaner power for improved audio performance.
Q: Does this kit require soldering or assembly?
A: Yes, this product is supplied as a DIY kit, which means some components may require soldering and assembly. It is recommended for users with basic to intermediate electronics and soldering experience. Always follow safe electronics assembly practices when building.