A compact, highly stable single-rail 48 V DC power supply PCB engineered specifically for DIY power supply builds, capable of delivering clean phantom power for up to two fully loaded 11-slot 500-series racks.
Technical Specifications
Output Rail: 1x +48 V DC power rail
Voltage Regulation: High-performance TL783 linear regulator for accurate, low-noise +48 V output
Filtering: 2,000 µF super-smoothing capacitor bank for maximum ripple reduction
Transformer Specs: Operates with a 2x 24 Vac or 1x 48 Vac transformer (20 VA capacity)
Terminal Block Connectors: Heavy-duty screw terminals accepting cables up to 2.5 mm²
Board Dimensions: 80 mm x 80 mm
Key Features
High Output Capacity: Easily powers phantom power (+48 V) requirements for up to 22 preamps (two 11-slot 500-series racks simultaneously)
Ultra-Clean & Stable Voltage: Built around a TL783 regulator and a 2,000 µF capacitor bank to eliminate hum and provide rock-solid voltage stability
Safety First Design: Integrated Protective Earth (PE) and Ground (GND) solder and terminal connections ensure safety and proper grounding
Easy Cabling: Heavy-duty onboard connectors accommodate up to 2.5 mm² wire thickness for reliable power distribution
Available Options
PCB Only: 1x 48 V PSU Bare PCB
Full Kit: 1x 48 V PSU Bare PCB and all required electronic components including the TRIAD FS48-400 transformer
Product name: 48V PSU Product identifier: PSU001/PCB001 Manufacturer: Link Audio Design, August-Bebel-Str.18, 08373 Remse, linkaudiodesign@gmail.com