Computer PSU DIY Power Supply

DIY Power Supply From An Old Computer PSU

In this post, I’ll show a DIY power supply I made from an old computer PSU. This is a great way to get a fairly powerful lab power supply with a range of different voltages for cheap. I used a breakout board I bought online as it’s much quicker and simpler than drilling holes for all the connectors into the case and then soldering all the wires.

DIY 9V Battery Power Supply

9V Battery Power Supply

In this post, I’ll show a 9V battery portable power supply I made quite a few years ago by originally following this tutorial. This particular power supply uses a voltage regulator(LM317) to drop down the voltage and dissipate the energy as heat. This means it becomes inefficient at higher currents. So it is most useful to power things that don’t require a lot of power.

Useful Resources For Software Engineers

Useful Software Engineering Resources

It’s hard to remember everything you learn over the years especially if you don’t use it very often. That’s why I think it’s good to have a compilation of cheatsheets, reference books or other types of resources like blog posts/videos/PDFs. So in this post, I will “bookmark” some useful software engineering resources and cheatsheets for myself(or anyone else who stumbles upon this post).

DIY Quiet Air Compressor

DIY Quiet Air Compressor

In this post, I will show my DIY quiet air compressor. I took the compressor from an old fridge and used an old whipped cream dispenser as an air tank. The compressor is very quiet and can thus be kept indoors(under my table in fact). The air capacity isn’t the greatest but it’s good enough for my needs(doing some pneumatics experiments, solder dispenser, …). The air pressure, however, can easily get up to 8 bar(around 120 psi). In addition to compressed air, you also get a vacuum line. You could, for example, use that for making a vacuum chamber or a vacuum pick up tool.

DPS3003 DIY Power Supply Assembled 2

DPS3003 DIY Portable Lab Power Supply

In this post, I will show my DIY portable power supply. The PSU uses the DPS3003 module. This module is rated for voltages from 0-32V and currents from 0-3A. You can get other models with higher or lower voltage/current ratings. The input voltage, however, must be in the range of 6-40V and your maximum output voltage is limited to your input voltage. In my case, the battery provides around 16V to the input so the output voltage can’t go higher than that.

DIY Power and Power Factor Meter

DIY Power and Power Factor Meter

In this post, I will show my DIY power/power factor meter. The module itself was bought(of course) I just put it in an enclosure and added some cables to make measurements easier. This way I have a handy and cheap tool for measuring the power and power factor of any device that I connect to it. This thing is no professional instrument with great accuracy but it’s good enough for doing some basic measurements.

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