Transformerless power supply

shruti-dorge18·KiCad·Transformerless power supply/Transformerless power supply.kicad_pcb

Transformerless power supply PCB layout, top view — open source board by shruti-dorge18

About the Transformerless power supply PCB

Transformerless power supply is an open source PCB design by shruti-dorge18, published on GitHub. It is a 2-layer board measuring 59 × 34.5 mm, with 18 components from 12 distinct parts.

Other key parts include the LM7805_TO220. 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

KiCad-based PCB design projects covering schematic, PCB layout, footprint integration, and 3D view. PCB designs are also uploaded on Boardrepo (Refer to the link provided)

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

Designed a transformerless AC–DC power supply to convert AC input into a lower, regulated DC output for low-power electronic circuits;

integrating bridge rectification, filtering, Zener-based voltage regulation, LM7805 regulation, and LED indication.

The project was developed to practice PCB designing

Transformerless power supply, from the project README — From the project README

Main components on the Transformerless power supply

Transformerless power supply bill of materials (BOM)

18 components, 12 distinct parts.

Qty	Part	Footprint	Refs
1	LM7805_TO220	TO-220-3_Vertical	U1
2	Screw_Terminal_01x02	TerminalBlock_CUI_TB007-508-02_1x02_P5.08mm_Horizontal	J1, J2
4	1N4007	D_DO-41_SOD81_P10.16mm_Horizontal	D1, D2, D3, D4
2	D_Zener	D_A-405_P7.62mm_Horizontal	D5, D6
1	LED	LED_D5.0mm	D7
1	2.2 uF	C_Rect_L18.0mm_W6.0mm_P15.00mm_FKS3_FKP3	C1
1	0.1 uF	C_Disc_D4.7mm_W2.5mm_P5.00mm	C2
1	1000 uF	CP_Radial_D10.0mm_P5.00mm	C3
1	470 uF	CP_Radial_D10.0mm_P3.80mm	C4
1	1M	R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R1
2	20 K	R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R2, R3
1	2.2 K	R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R4

Transformerless power supply design files

The KiCad project lives in the shruti-dorge18/KiCad 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 59 × 34.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Transformerless power supply?

18 components, from 12 distinct parts. The full bill of materials is listed on this page.

Where can I download the Transformerless power supply design files?

From the shruti-dorge18/KiCad repository on GitHub, which has the KiCad layout and the schematic; 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 shruti-dorge18. Use it as a reference, and ask the author before reusing the design.

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