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Transformerless power supply

shreyashjaiswal4041·pcb_projects·transformerless power supply /transformerless power supply .kicad_pcb

Transformerless power supply PCB layout, top view — open source board by shreyashjaiswal4041

About the Transformerless power supply PCB

Transformerless power supply is an open source PCB design by shreyashjaiswal4041, published on GitHub. It is a 2-layer board measuring 54.4 × 42.4 mm, with 18 components from 14 distinct parts.

Other key parts include the NE555P. By type, the board carries 7 diodes, 4 capacitors, 4 resistors, 2 connectors and 1 IC.

It belongs with the power & battery designs in this gallery.

From the project

pcb

🧩 Key Features • ✅ Proper grounding strategy (Star / Split Ground / Solid GND Plane) • ✅ Controlled trace width for current handling • ✅ Decoupling capacitor placement best practices • ✅ EMI-aware routing • ✅ Thermal management considerations • ✅ Silkscreen labeling for assembly

/hardware ├── schematic.kicadsch ├── pcblayout.kicadpcb ├── gerbers/ ├── BOM.csv ├── 3Dmodel/ └── fabrication_files/

Main components on the Transformerless power supply

NE555P

Transformerless power supply bill of materials (BOM)

18 components, 14 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
NE555P
LM7805_TO220
U1
2
SCREW_TERMINAL_01X02
Screw_Terminal_01x02
J1, J2
3
1N4007
D1, D2, D3
1
1N4007
D4
2
D_Zener
D5, D6
1
LED
D7
1
100NF
225k/2.2uf
C1
1
100NF
0.1uf
C2
1
1000UF
1000uf
C3
1
470uf
C4
1
R
R1
1
1m
R2
1
2.2K
20k
R3
1
20k
R4

Transformerless power supply design files

The KiCad project lives in the shreyashjaiswal4041/pcb_projects repository on GitHub; these links point at the commit this page was built from.

Transformerless power supply: common questions

How big is the Transformerless power supply PCB?

The Transformerless power supply measures 54.4 × 42.4 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Transformerless power supply?

18 components, from 14 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Transformerless power supply design files?

From the shreyashjaiswal4041/pcb_projects repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Transformerless power supply design in my own project?

The repository has no license, so all rights stay with shreyashjaiswal4041. Use it as a reference, and ask the author before reusing the design.

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