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: 5 days 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 (6 months ago)
• Default Branch: main
• Last Pushed: 2024-06-25T15:46:29.000Z (5 months ago)
• Last Synced: 2024-06-25T17:34:58.350Z (5 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

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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.

![Front view](/pics/psu3.jpg)

## 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 64 & 128 pinouts](/pics/C128_TO_C64_PSU-105237736.jpeg)

![Side view](/pics/C64-Power-and-Cable-Pin-Numbers-1024x576.jpg)

### Commodore Amiga 500

![Amiga 500 pinout](/pics/amiga500-pinout.3.jpg)

## Schematics

[WORK IN PROGRESS]