2 layers61.5 × 34 mm
Bridge Rectifier Layout
thisisarjun18/PCB-PROJECTS
PCB design projects created in KiCad, including schematic capture, PCB layout, routing, and hardware prototyping.
10 parts
2 layers108.6 × 31.9 mm
Transformerless Power Supply
thisisarjun18/PCB-PROJECTSPCB design projects created in KiCad, including schematic capture, PCB layout, routing, and hardware prototyping.
- Size
- 108.6 × 31.9 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 18
- Nets
- 9
- Pads
- 37
- Tracks, vias
- 53, 0
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 9 Jun 2026
- Updated
- 22 Jun 2026
Overview
Transformerless Power Supply is an open-source printed circuit board by thisisarjun18, from the thisisarjun18/PCB-PROJECTS repository on GitHub. It is a 2-layer board of 108.6 × 31.9 mm with 18 parts on 9 nets, routed with 53 tracks and 0 vias.
Its parts include 7 diodes, 4 capacitors, 4 resistors, 2 connectors and 1 IC. It belongs with the power boards of this library.
README
Project-01-Triple-LED-PCB/README.mdProject 01 - Triple LED PCB
A simple 3-channel LED indicator PCB designed in KiCad.
Parts
18| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 1N4007 | Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal | D1, D2, D3, D4 |
| 2 | 20k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R2, R3 |
| 2 | D_Zener | Diode_THT:D_DO-15_P12.70mm_Horizontal | D5, D6 |
| 2 | Screw_Terminal_01x02 | TerminalBlock:TerminalBlock_MaiXu_MX126-5.0-02P_1x02_P5.00mm | J1, J2 |
| 1 | 0.1uF | Capacitor_THT:C_Disc_D10.0mm_W2.5mm_P5.00mm | C2 |
| 1 | 1000uF | Capacitor_THT:CP_Radial_D10.0mm_P2.50mm | C3 |
| 1 | 1M | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R1 |
| 1 | 2.2k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R4 |
| 1 | 225K/2.2uF | Capacitor_THT:C_Rect_L10.0mm_W3.0mm_P7.50mm_FKS3_FKP3 | C1 |
| 1 | 470uF | Capacitor_THT:CP_Radial_D10.0mm_P3.80mm | C4 |
| 1 | LED | LED_THT:LED_D3.0mm | D7 |
| 1 | LM7805_TO220 | Package_TO_SOT_THT:TO-220-3_Vertical | U1 |
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thisisarjun18/PCB-PROJECTS
PCB design projects created in KiCad, including schematic capture, PCB layout, routing, and hardware prototyping.
7 parts
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Questions
How big is the Transformerless Power Supply PCB?
It measures 108.6 × 31.9 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Transformerless Power Supply use?
18 parts. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Transformerless Power Supply KiCad files?
From the thisisarjun18/PCB-PROJECTS repository on GitHub, at the commit this page was made from: the board is Project-03-Transformer less AC to DC Converter/Transformerless Power Supply.kicad_pcb and its schematic DC motor Speed Controller/DCmotorSpeedController.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Transformerless Power Supply design in my own project?
Its repository states no licence, so its author keeps all rights: ask thisisarjun18 before reusing the design.