This project is motivated by Purdue University Electrical Engineering Senior Design, ECE 49022. Our team has collectively decided to make a "from scratch" DC Regulated Benchtop Power Supply. This product is aimed at a typical electronics hobbyist, and is capable of 0-32V and 0-3A, with constant voltage and constant current modes. It interfaces with 120VAC standard wall power, and delivers an isolated supply to the end user with DC+, DC-, and Earth GND terminals at the output.
Executive DescriptionThe switching bench-top power supply makes simple user-focused improvements on otherwise basic power supplies. The 96W power supply will have a 32V and 3A floating DC output max as well as an earth ground banana jack for positive and negative output capabilities. Typical features are current and voltage display with connections for DC+/- and earth ground. Special features added are an instantaneous power display, an output toggle switch to turn off the output while keeping the device on, and a max current transient capture which informs the user of output transients.
User StoryHarry the Hobbyist spends his free time prototyping electronics design projects and is looking for a variable DC output to power his projects which must cover a range of voltages and currents for different applications with floating DC output and an earth ground terminal.Harry desires a display that will indicate outputs and limit settings during configuration. One unique feature requested by Harry is that the front panel should display the power output so that Harry doesn’t have to calculate it himself. He has also expressed interest in a maximum transient current calculation that will display current spike values which could be reset at Harry’s will.Safety is key for Harry, and he would like the device to be temperature controlled to be used at his hobbyist bench within his home. This implies the supply will have adequate fan and venting control.
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