12V Regulated DC Power Supply (AC-DC)

A reliable and high-safety 12V DC power supply designed to convert AC input (from a transformer) into a stable DC output. This project emphasizes industrial safety standards with a focus on high-voltage isolation and thermal stability.

🛠 Hardware Specifications

• PCB Type: Single Sided (Bottom Layer) with Top Silkscreen.
• Board Dimensions: 124 mm x 91 mm.
• Safety Feature: 18 mm clearance between AC primary and DC secondary sections.
• Thermal Management: Dedicated M3 mounting hole for a TO-220 heatsink.

📂 Files

• /Hardware: Schematic (.kicad_sch) and PCB layout (.kicad_pcb) files.
• /Fabrication: Production-ready Gerber and Drill files (RS-274X format).
  • Note: Also includes a Mirrored PDF for DIY toner transfer (home-made) production.
• /Images: 3D renders, schematic, and PCB layout captures.

📋 Footprints

• Voltage Regulator: Package_TO_SOT_THT:TO-220-3_Vertical (L7812)
• Bridge Rectifier: Diode_THT:Diode_Bridge_10.5x10.5x5.0mm_P5.0mm (B40C1500G)
• Capacitors: - 2200µF: Capacitor_THT:CP_Radial_D12.5mm_P5.00mm
  • 100nF/330nF: Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm
• Fuse Holder: Fuse:Fuseholder_Cylinder-5x20mm_Schurter_0031_8201_Horizontal
• Switch: Button_Switch_THT:SW_DPST_KAE_LS11_Straight (AC Mains Isolation)
• Terminals: TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-1,5-2_1x02_P5.00mm_Horizontal
• LED: LED_THT:LED_D5.0mm (Power Status Indicator)

⚖️ License

Licensed under the MIT License. See LICENSE for more information.

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Design: Onur Yurtsever