ABSTRACT:
This paper presents the design and development of a low-cost, multi-output variable DC power supply using a recycled ATX Switch-Mode Power Supply (SMPS) and a high-power 300 W buck converter. The proposed system provides fixed DC outputs of 12V, 5V, and 3.3V, along with a continuously adjustable output ranging from 1.2 V to 12.1V at currents up to 10A. Additional features include real-time voltage and current monitoring, temperature sensing, current limiting, a USB charging port, and banana-plug output terminals. A custom 3D-printed enclosure enhances mechanical safety, airflow, and usability. The developed unit offers a compact, reliable, and economical alternative to conventional laboratory power supplies, making it suitable for educational laboratories, electronics prototyping, and hobbyist applications.
Cite this article:
Aryan Verma, Gauri Nautiyal, Surendra Kumar (2025), Design and Implementation of a Cost-Effective Multi-Output Variable DC Power Supply Using ATX SMPS and Buck Converter. Spectrum of Emerging Sciences, 5 (2) 50-56,, DOI: https://doi.org/10.55878/SES2025-5-2-12
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