We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Green rectangular circuit board with silver bridge rectifier and copper traces

SMUGDESK

SMUGDESK PW28 Dual Power Filter Rectifier Board 25A FlatBridge Unregulated PowerSupply ACDC Circuit

SKU CH-VS64-BS6DT

Unregulated dual-channel AC-DC rectifier board with 25 A flat-bridge rectifier and thick-copper traces for high-current audio amplifier DIY builds

  • 25A flat-bridge rectifier delivers high-current unregulated DC output
  • Dual-channel filter design suppresses AC ripple for cleaner audio power
  • Thick copper PCB traces reduce voltage drop and heat under heavy load
  • Simple wiring layout suits DIY amplifier builds and power-supply rebuilds
  • Unregulated output varies with AC input — match transformer to your circuit needs

Dual-Channel Rectifier Board

The PW28 is an unregulated AC-to-DC power supply module built for DIY audio amplifier projects. It integrates a 25A flat bridge rectifier and dual-channel filtering to deliver high-current output for analog circuit experiments and hi-fi amp modifications.

Build Integration Needs

This board requires a separate AC transformer matched to the target circuit design to function. It provides unregulated DC voltage that varies with input and load, freeing the builder to choose transformer ratings while demanding careful polarity wiring and thermal management during installation.

Filter Circuit Impact

Thick copper traces lower internal impedance to reduce voltage drop and heat under heavy current draw. The dual-power filter structure suppresses AC ripple interference, improving supply purity for audio equipment and lowering amplifier background noise without adding voltage regulation.

Highlights

  • 25A flat-bridge rectifier delivers high-current unregulated DC output
  • Dual-channel filter design suppresses AC ripple for cleaner audio power
  • Thick copper PCB traces reduce voltage drop and heat under heavy load
  • Simple wiring layout suits DIY amplifier builds and power-supply rebuilds
  • Unregulated output varies with AC input — match transformer to your circuit needs

Specifications

No published specifications for this item yet.

Questions about this item

How much continuous current can the 25 A flat-bridge rectifier handle before heat becomes the limiting factor?

The board uses thick-copper traces to reduce internal impedance, so the 25 A flat-bridge rectifier is rated for 25 A continuous current; heat buildup is minimised by the PCB design rather than an active cooler.

What is the thermal and acoustic profile when the PW28 runs at full load for extended periods?

With no fan or heatsink on the module, the thick-copper layout keeps temperature rise low enough for silent operation at rated 25 A, provided the enclosure has adequate airflow.

Which AC transformer specifications must I already have to complete a dual-rail supply with this board?

You need a centre-tapped AC transformer whose secondary voltage and VA rating match your amplifier design; the PW28 provides only rectification and filtering, not voltage regulation.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.