Transformerless PowerSupply

nawedahmed·Transformerless_PowerSupply

Transformerless PowerSupply PCB layout, top view — open source board by nawedahmed

About the Transformerless PowerSupply PCB

Transformerless PowerSupply is an open source PCB design by nawedahmed, published on GitHub. It is a 2-layer board measuring 53.5 × 40.5 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

This is a sample project of Powerless Transformer system by Nawed Ahmad.

This is a sample project of Powerless Transformer system by Nawed Ahmad.

🛠️ Project Description A compact and low-cost AC to DC power supply without using bulky transformers. Ideal for small electronics and IoT devices.

📦 Features - Capacitor-based step-down design

Transformerless PowerSupply, from the project README — From the project README

Main components on the Transformerless PowerSupply

Transformerless PowerSupply 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_bornier-2_P5.08mm	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	225K/2.2uF	C_Disc_D4.7mm_W2.5mm_P5.00mm	C1
1	0.1uF	CP_Radial_D10.0mm_P5.00mm	C2
1	1000uf	CP_Radial_D10.0mm_P3.80mm	C3
1	470uF	C_Rect_L18.0mm_W6.0mm_P15.00mm_FKS3_FKP3	C4
1	1M	R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R1
2	20K	R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R2, R3
1	2.2K	R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R4

Transformerless PowerSupply design files

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

LayoutTransformerless Power Supply.kicad_pcb
SchematicTransformerless Power Supply.kicad_sch

Transformerless PowerSupply: common questions

How big is the Transformerless PowerSupply PCB?

The Transformerless PowerSupply measures 53.5 × 40.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Transformerless PowerSupply?

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

Where can I download the Transformerless PowerSupply design files?

From the nawedahmed/Transformerless_PowerSupply 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 PowerSupply design in my own project?

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

Similar boards