RetroBench Power Supply Unit

This project is a versatile bench power supply unit that can provide a range of DC outputs and 9VAC. The GX16-8 connector can power Commodore retrocomputers.

Commodore retrocomputers support

The power supply has been tested with:

• Commodore VIC-20
• Commodore 16
• Commodore 64
• Commodore 128
• Commodore Amiga 500

Bench PSU outputs

Output voltages are:

• 5VCC
• 9VCC
• 12VC
• 9VAC - through GX16-8 connector
• Variable CC output

3d printed parts

STL files can be printed using:

• PLA filament
• 0.1mm layer height
• 15% infill
• 4 walls

Parts needed

• 1x Meanwell RT-65B power supply (link)
• 1x Core transformer 220VAC to 9VAC (link)
• 1x GX16-8 male & female connectors (link)
• 4x red & black banana socket pairs (link
• 1x Precision multiturn 10kOhm potentiometer (link)
• 1x Miniature toggle switch single pole double throw (link)
• 1x IEC 320 power plug socket 2.0mm AC-01-2, Copper Contact (link)
• 3x 10A Digital Voltmeter Ammeter (link)
• 1x MP1584EN Adjustable 3A DC-DC step down converter (link)

Schematics

[WORK IN PROGRESS]