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Cascaded variable linear power supply

reporafin·cascaded-variable-linear-power-supply·Hardware/vdc.kicad_pcb

Cascaded variable linear power supply PCB layout, top view — open source board by reporafin

About the Cascaded variable linear power supply PCB

Cascaded variable linear power supply is an open source PCB design by reporafin, published on GitHub under the MIT license. It is a 2-layer board measuring 141.2 × 106.9 mm, with 25 components from 10 distinct parts.

Other key parts include the LM317_TO-220, LM7812_TO220, LM7805_TO220 and LM1117T-3.3. By type, the board carries 8 capacitors, 6 diodes, 5 connectors, 4 ICs and 2 resistors.

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

From the project

A variable linear AC-to-DC power supply utilizing LM voltage regulators. Includes LTspice circuit simulations and KiCad schematic/PCB fabrication files with thermal and ground plane optimizations.

A hardware design and simulation repository for a custom variable linear AC-to-DC power supply. The circuit relies on the LM adjustable voltage regulator and the fixed voltage regulators to provide stable, clean power for lab and prototyping environments.

To view or modify the files in this project, you will need: LTspice: For running the .asc circuit simulations. KiCad (v7.0+): For opening the schematic and PCB files.

Cascaded variable linear power supply, from the project README
From the project README

Main components on the Cascaded variable linear power supply

LM317_TO-220LM7812_TO220LM7805_TO220LM1117T-3.3

Cascaded variable linear power supply bill of materials (BOM)

25 components, 10 distinct parts.

QtyPartRefs
1
LM317_TO-220
U1
1
LM7812_TO220
U2
1
LM7805_TO220
U3
1
LM1117T-3.3
U4
5
Screw_Terminal_01x02
J1, J2, J3, J4, J5
6
1N4007
D1, D2, D3, D4, D5, D6
1
2200u
C1
7
.33u
C2, C3, C4, C5, C6, C7, C8
1
240
R1
1
5k
R2

Cascaded variable linear power supply design files

The KiCad project lives in the reporafin/cascaded-variable-linear-power-supply repository on GitHub; these links point at the commit this page was built from.

Cascaded variable linear power supply: common questions

How big is the Cascaded variable linear power supply PCB?

The Cascaded variable linear power supply measures 141.2 × 106.9 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Cascaded variable linear power supply?

25 components, from 10 distinct parts. The full bill of materials is listed on this page.

Where can I download the Cascaded variable linear power supply design files?

From the reporafin/cascaded-variable-linear-power-supply repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Cascaded variable linear power supply design in my own project?

Yes, under the terms of its MIT license, which reporafin chose for the repository.

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