Transformerless Power Supply – PCB Design

A PCB design for a transformerless power supply, created using KiCad.

Overview

This project contains the schematic, PCB layout of transformerless power supply.

The project was developed to practice PCB designing

Tools Used

• KiCad

Reference

This project was created while following this YouTube tutorial for learning and reference: https://youtu.be/qJ6HhyoyFbA?si=Ja4rXb8v6HYuZlvf

Project Structure

Transformerless_power_supply/
├── Transformerless_power_supply.kicad_pcb
├── Transformerless_power_supply.kicad_pro
├── Transformerless_power_supply.kicad_sch
├── Images/
    ├── Transformerless_power_supply_schematic.png
    ├── Transformerless_power_supply_pcb.png
    └── Transformerless_power_supply_3Dview.png

Files

File / Folder	Description
.kicad_sch	Circuit schematic
.kicad_pcb	PCB layout
.kicad_pro	KiCad project file
Images/	Project images showing the schematic, PCB layout, and 3D view

PCB Design

The PCB was designed using KiCad with through-hole components and routed connections.

The PCB layout includes components such as:

• 1N4007 Diodes (x4)
• Zener diode (x2)
• Resistors (x4)
• Unpolarized capacitor (x2)
• Polarized capacitor (x2)
• LED
• Terminal blocks (x2)
• LM7805_TO220 Voltage regulator

How to Open

1. Clone or download this repository.
2. Open the KiCad project file:

Transformerless_power_supply.kicad_pro

3. Open the schematic or PCB Editor from KiCad.
4. Use View → 3D Viewer to inspect the PCB in 3D.

Schematic

PCB Layout

3D View

Author

Shruti Dorge

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Designed using KiCad.