Isolated ac dc power adapter
About the Isolated ac dc power adapter PCB
Isolated ac dc power adapter is an open source PCB design by ZivanaiChidyiwa, published on GitHub under the MIT license. It is a 2-layer board measuring 203.4 × 57.3 mm, with 22 components from 19 distinct parts.
By type, the board carries 6 resistors, 4 capacitors, 3 diodes, 2 connectors, 1 transistor and 1 fuse.
From the project
Design of a 5V 2A isolated AC–DC flyback power adapter featuring KiCad PCB design, LTSpice simulation, and engineering calculations.
This project presents the design and development of an isolated AC-DC power adapter completed as part of an Electrical and Electronics Engineering design course. The project covers the complete hardware design process, from circuit simulation and schematic capture to PCB layout, manufacturing outputs, and enclosure design.
The objective was to design a reliable isolated power supply while following good engineering design practices and producing manufacturing-ready documentation.
Isolated ac dc power adapter bill of materials (BOM)
22 components, 19 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | STB33N65M2 | TO-220-3_Vertical | Q1 |
| 1 | Barrel_Jack | BarrelJack_Horizontal | J1 |
| 1 | Screw_Terminal_01x02 | TerminalBlock_bornier-2_P5.08mm | J2 |
| 1 | Fuse | Fuseholder_Clip-5x20mm_Keystone_3517_Inline_P23.11x6.76mm_D1.70mm_Horizontal | F1 |
| 1 | Varistor | RV_Disc_D15.5mm_W5.2mm_P7.5mm | RV1 |
| 1 | Flyback Transformer | Transformer_EE19_10Pin_Vertical | T1 |
| 1 | Thermistor_NTC | R_Radial_Power_L11.0mm_W7.0mm_P5.00mm | TH1 |
| 1 | UCC28730 ~ | SOIC-8_3.9x4.9mm_P1.27mm | UCC28730 |
| 1 | D_Bridge_+-AA | Diode_Bridge_DIP-4_W7.62mm_P5.08mm | D1 |
| 2 | D_Schottky | D_DO-201_P15.24mm_Horizontal | D2, D3 |
| 1 | 400u | L_Toroid_Horizontal_D26.0mm_P5.08mm | L1 |
| 2 | 47u | C_Radial_D18.0mm_H35.5mm_P7.50mm | C1, C2 |
| 1 | 4.7u | CP_Radial_D5.0mm_P2.00mm | C3 |
| 1 | 1000u | CP_Radial_D10.0mm_P5.00mm | C4 |
| 1 | 0.91 | R_0402_1005Metric | R1 |
| 1 | 10 | R_0402_1005Metric | R2 |
| 1 | 100M | R_0402_1005Metric | R3 |
| 2 | 10k | R_0402_1005Metric | R4, R6 |
| 1 | 20k | R_0402_1005Metric | R5 |
Isolated ac dc power adapter design files
The KiCad project lives in the ZivanaiChidyiwa/isolated-ac-dc-power-adapter repository on GitHub; these links point at the commit this page was built from.
Isolated ac dc power adapter: common questions
How big is the Isolated ac dc power adapter PCB?
The Isolated ac dc power adapter measures 203.4 × 57.3 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Isolated ac dc power adapter?
22 components, from 19 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 Isolated ac dc power adapter design files?
From the ZivanaiChidyiwa/isolated-ac-dc-power-adapter 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 Isolated ac dc power adapter design in my own project?
Yes, under the terms of its MIT license, which ZivanaiChidyiwa chose for the repository.