12V Power Supply Unit for Field and Bench Use

I designed this 12V regulated power supply case using off-the-shelf components. 
It provides 6x 12V outputs (three individual circuits) for powering my astrophotography gear but can be used for general electronics projects.

⚡ Power Setup

• Regulated PSU (12V 30A)
  🔗 Amazon link
• IEC Power Socket with Switch and Fuse
  🔗 Amazon link
• 6 × 12V DC output jacks (panel-mount) – 2 per PSU rail
  🔗 Amazon link

Wiring the high voltage circuit follows standard color convention:

• Black → Line (L)
• White → Neutral (N)
• Green → Ground (⏚)
   

Wiring ther low voltage circuits follows standard color convention:

• Black → Negative (-) [long pin on the barrel connector]
• White → Positive (+) [short pin on the barrel connector]]

🧱 Enclosure & Mounting

• Designed in Fusion 360 and printed in PLA + PETG
• Ventilation on the top, bottom, and sides for passive cooling (the PSU has a FAN on the top aligned to the top circular vents in the design)
• The PSU is mounted to the rear internal plate using 4 M4 screws on the sides
• The plate with mounted PSU then slides into the enclosure and is secured by:
  • 4 M4 screws on the bottom
  • 4 M4 screws on the face (2 at the top/bottom and 2 on face plate sides)

The front faceplate holds:

• 6 panel-mounted output jacks
• Secured with 2 M4 screws on the sides

🔌 Electronics

• Simple wiring: each jack is soldered to the PSU output terminals
• Short pin = positive, long shell = ground
• The PSU provides three pairs of V+ and V-, each pair wired to two jacks
• Includes a voltage adjustment screw if precise 12V is needed
• Built-in fan activates above 45°C, though it's never been triggered during astrophotography use — passive ventilation has been sufficient so far

Clean, functional, and easy to service or expand. Let me know if you’d like the STL files or wiring layout.