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#electricalengineering

3 posts3 participants0 posts today
ceeg

hey how do you buy a single electrical component nowadays.... I don't live in a major city but I only ever need 2 or 3 of something at a time for repairs (this time a reed switch for a rockband game drum foot pedal) and I'm disgusted by the business model that because these cost pennies, I should buy a lot of 50 or 100 components, 99% of which will go to waste.

is the answer to find my local makerspace? we have a couple in town, at least ostensibly, but I have never reached out for resources.

#repair#electricalengineering#righttorepair
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Dave Rahardja

Oh man, this is SO GOOD. Mehdi Sadaghdar (ElectroBOOM) walks you through making a multitouch-capable capacitive sensor FROM SCRATCH. Along the way, he also explains how resistive and IR-beam touch sensors work.

If you’ve ever wondered how the touch screens on your phones and tablets work, you need to view this video. So good.

I also enjoy his jabs at #AI along the way.

#maker #electronics #electricalEngineering

youtube.com/watch?v=u8s9hpjN25

YouTubeThe Touchscreen that Changed the World!By ElectroBOOM
Anna-Lena Marx

Did you know I studied electrical engineering besides work? On Thursday, I finished my bachelor's thesis with the final presentation and it's time to finally present my project: ZEReader, a microcontroller-based E-Reader.
Inspired by the Open Book Project by Joey Castillo, I designed my own platform from scratch. My focus was on building a reader usable in everyday life that is capable of handling books in the EPUB format. The project is still in a very early phase, but it shows great potential, and I have lots of ideas for future revisions.

You can follow the project's journey and see its current state at marx.engineer/zereader/ and the linked GitHub repos!

And of course, a special thank you to @aislerhq for producing and sponsoring the PCBs!

#opensource#hardware#ereader
Queen Calyo Delphi

Hm.

Another perennial debate as an #electronics and #electricalengineering hobbyist:

Do I buy only as many units as I need for this one project I'm working on now?

Or do I buy enough to get the next price breakpoint and have spares for future projects I have not yet planned?

🤔

(I need at least three of these, preferably five to feel comfortable futzing around with 'em, but buying ten would cost only $8.50 more than that: digikey.com/en/products/detail )

DigiKey ElectronicsCD4059AM | DigiKey ElectronicsOrder today, ships today. CD4059AM – Counter IC Divide-by-N 1 Element 16 Bit Positive Edge 24-SOIC from Texas Instruments. Pricing and Availability on millions of electronic components from Digi-Key Electronics.
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Queen Calyo Delphi

Alrighty, I need to post an RFC to the #electronics and #electricalengineering fedi mind hive:

I am searching for a method to inject a clock signal (f≤1Hz) into a power supply by swapping the +V/0V rails back and forth.

Requirements:
- Able to operate at up to +12V
- Single-rail supply
- Min. TDP: 1W

Update:

I figured out a solution based around cheap parts that will be more than adequate! Thanks for the feedback! 😄

ScienceOpen

'Utilization of Filters and Other Methods for Harmonic Distortion Mitigation in Electricity Networks Tied to Renewable Energy Sources: A Review' - a recent article in the Nigerian Journal of #TropicalEngineering on #ScienceOpen:

🔗 scienceopen.com/hosted-documen

ScienceOpen<b>UTILIZATION OF FILTERS AND OTHER METHODS FOR HARMONIC DISTORTION MITIGATION IN ELECTRICITY NETWORKS TIED TO RENEWABLE ENERGY SOURCES: A REVIEW </b><p xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" class="first" dir="auto" id="d204129e121">Harmonics in electrical power systems can be likened to virus in biological systems. They cause all manner of disturbances including damages to electrical appliances and utility equipment. It is unfortunate that harmonics cannot be totally eradicated from electrical networks. This suggests that they are inescapable but can be efficiently minimized. In circumstances when they are removed or decreased, if proper care is not provided, they may reappear. Because of the challenges connected with old energy sources, such as carbon emissions and other forms of pollution, world economies are shifting to greener and cleaner forms of energy known as renewable energy sources (RESs). RES in standalone or grid connected mode is also a major source of power quality problems such as harmonics. To overcome harmonic issues, passive filtering techniques were initially used. Then, due to the limitations of passive filters, active filtering techniques were used before the more recent use of hybrid harmonic active filtering strategies. Aside from the use of filters, several methods have been used to address harmonic-related difficulties. In this research, harmonic mitigation attempts in the last twenty-seven years are surveyed. The primary purpose is to demonstrate the strength and limitations of each strategy. This will help with their selection and application in specific scenarios for harmonic reduction. </p>
#EngineeringResearch#ElectricalEngineering#RenewableEnergy
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