HardLabs

Adjustable-Linear-DC-Power-Supply-PCB-Design-

Honyar55·Adjustable-Linear-DC-Power-Supply-PCB-Design-

Adjustable-Linear-DC-Power-Supply-PCB-Design- layout, top view — open source board by Honyar55

About the Adjustable-Linear-DC-Power-Supply-PCB-Design-

Adjustable-Linear-DC-Power-Supply-PCB-Design- is an open source PCB design by Honyar55, published on GitHub. It is a 2-layer board measuring 46.5 × 42 mm, with 10 components from 9 distinct parts.

Other key parts include the LM358. By type, the board carries 2 connectors, 2 capacitors, 2 resistors, 1 IC, 1 transistor and 1 diode.

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

From the project

A compact, 2-layer PCB implementation of an adjustable linear voltage regulator using an LM358 operational amplifier and a BD139 NPN pass transistor.This circuit takes a DC input voltage (e.g., $+15\text{V}$) and provides a smooth, adjustable output regulated by a reference Zener diode and negative feedback loop. Designed and routed using KiCad 8.0

A compact, 2-layer PCB implementation of an adjustable linear voltage regulator built around an LM358 operational amplifier and a BD139 NPN pass transistor.

This board takes a DC input voltage (around +15V) and steps it down into a smooth, adjustable output. It uses a Zener reference voltage combined with a closed-loop negative feedback system to keep the output steady under load. Designed, routed, and verified using KiCad.

Main components on the Adjustable-Linear-DC-Power-Supply-PCB-Design-

LM358

Adjustable-Linear-DC-Power-Supply-PCB-Design- bill of materials (BOM)

10 components, 9 distinct parts.

QtyPartRefs
1
LM358
U1
1
BD139
Q1
2
Screw_Terminal_01x02
J1, J2
1
10k
RV1
1
1N47xxA
D1
1
100uF
C1
1
10uF
C2
1
1k
R2
1
220
R3

Adjustable-Linear-DC-Power-Supply-PCB-Design- design files

The KiCad project lives in the Honyar55/Adjustable-Linear-DC-Power-Supply-PCB-Design- repository on GitHub; these links point at the commit this page was built from.

Adjustable-Linear-DC-Power-Supply-PCB-Design-: common questions

How big is the Adjustable-Linear-DC-Power-Supply-PCB-Design-?

The Adjustable-Linear-DC-Power-Supply-PCB-Design- measures 46.5 × 42 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Adjustable-Linear-DC-Power-Supply-PCB-Design-?

10 components, from 9 distinct parts. The full bill of materials is listed on this page.

Where can I download the Adjustable-Linear-DC-Power-Supply-PCB-Design- design files?

From the Honyar55/Adjustable-Linear-DC-Power-Supply-PCB-Design- repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Adjustable-Linear-DC-Power-Supply-PCB-Design- design in my own project?

The repository has no license, so all rights stay with Honyar55. Use it as a reference, and ask the author before reusing the design.

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