https://github.com/fabriziofiorucci/retrobench-psu
A versatile bench power supply unit that can power Commodore retrocomputers
https://github.com/fabriziofiorucci/retrobench-psu
amiga500 commodore commodore-128 commodore-16 commodore-64 electronics powersupply psu retrocomputing vic-20
Last synced: 4 months ago
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A versatile bench power supply unit that can power Commodore retrocomputers
- Host: GitHub
- URL: https://github.com/fabriziofiorucci/retrobench-psu
- Owner: fabriziofiorucci
- Created: 2024-05-03T20:41:43.000Z (about 2 years ago)
- Default Branch: main
- Last Pushed: 2025-06-19T12:03:33.000Z (12 months ago)
- Last Synced: 2025-06-19T13:21:10.811Z (12 months ago)
- Topics: amiga500, commodore, commodore-128, commodore-16, commodore-64, electronics, powersupply, psu, retrocomputing, vic-20
- Homepage:
- Size: 1.59 MB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
# 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](https://www.aliexpress.com/item/1005006587968530.html))
- 1x Core transformer 220VAC to 9VAC ([link](https://www.aliexpress.com/item/4001293606204.html))
- 1x `GX16-8` male & female connectors ([link](https://www.aliexpress.com/item/1005005686517100.html))
- 4x red & black banana socket pairs ([link](https://www.aliexpress.com/item/32969822440.html))
- 1x Precision multiturn 10kOhm potentiometer ([link](https://www.aliexpress.com/item/32858999042.html))
- 1x Miniature toggle switch single pole double throw ([link](https://www.aliexpress.com/item/33012530737.html))
- 1x IEC 320 power plug socket 2.0mm AC-01-2, Copper Contact ([link](https://www.aliexpress.com/item/1005004921974470.html))
- 3x M430 10A Digital Voltmeter Ammeter ([link](https://www.aliexpress.com/item/1005002338207839.html))
- 1x MP1584EN Adjustable 3A DC-DC step down converter ([link](https://www.aliexpress.com/w/wholesale-mp1584en.html))
## GX16-8 pinout
Connector pinout (solder side):
| Pin | Description |
|-----|---------------|
| 1 | GND |
| 2 | +5VDC |
| 3 | +9VDC |
| 4 | +12VDC |
| 5 | -12VDC |
| 6 | 9VAC |
| 7 | 9VAC |
| 8 | Shield ground |
## Commodore pinouts
### Commodore VIC-20
7 Pin DIN connector - solder side
| Pin | Description |
|-----|---------------|
| 1 | GND |
| 2 | GND |
| 3 | GND |
| 4 | N/C |
| 5 | +5VDC |
| 6 | 9VAC |
| 7 | 9VAC |
### Commodore 16
Barrel connector:
- +9VDC, center negative
### Commodore 64 & 128
### Commodore Amiga 500
## Schematics
[WORK IN PROGRESS]