Adjustable DC Power Supply
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Electronics Design · SPICE · PCB

Adjustable DC Power Supply

Toronto, ON 2025 MIE346 · Digital & Analog Electronics
Completed atUniversity of Toronto
Project summary & impacts

Info

Designed and built a low-cost adjustable DC bench supply for powering common mechatronics circuits — prototyped on breadboard and perfboard, validated in SPICE, and laid out on a custom-milled PCB with a digital readout.

2 Boards soldered
PCB Milled layout design
LTSPICE Electrical validation of the voltage regulator stage

Simple supply design with noise filtering.

Output voltage adjustable from 0–15 V, with an adjustable current limit from 0–3 A. Filtered through three 2nd-order Sallen–Key low-pass active filters forming a 6th-order Butterworth response.

Simple supply design with noise filtering.
Gallery

Project gallery

How I did the project

Software & skills

Software

  • Autodesk InventorDesign modeling of the enclosure and mechanical layout.
  • AutoCADTechnical documentation and dimensioned drawings.
  • SOLIDWORKS3D design and part detailing.
  • LTSPICEElectrical validation of the regulator and filter stages.
  • Autodesk EAGLEBoard layout and custom milling of the final PCB.

Technical & soft skills

  • Electronics Design
  • Circuit Simulation
  • PCB Layout
  • Soldering & Prototyping
  • Analog Filter Design