sdmay21-47 • Power supply design for at-home class laboratory work.

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Welcome to our project home page!

Here you will find information about our team and our senior design project.

Project Poster

Project Description

The goal of our project is to design an affordable 4-output DC power supply for EE 201 or EE 230 students to use outside of a laboratory setting. The idea is to create a power supply that students can purchase for themselves to have in case on-campus labs are unavailable, as they are now due to Covid. The power supply will have 4 outputs. The outputs will be controlled by a rotary encoder and selection buttons, and displayed on an LCD display. The functionality of the power supply will be managed by a microcontroller.

Functional Requirements

The functional requirements of the power supply is that it will have four voltage outputs: ± 2 to 25 VDC (1.5A max current), 0 to 10 VDC with a current limit of 1A, and 5 VDC fixed output (2A max current). The three outputs that can vary in voltage, will be accessible through binding posts. The fixed output will be a standard USB type A and the input for the power supply will be a 24 VAC wall supply with at least 100W of input power. The power supply will have a microcontroller to display output voltage levels, which will be controlled using a rotary encoder. The end product cannot be larger than 7"x4"x3" and the final cost of the unit should not exceed $100.

Power Supply Block Diagram