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Queen Calyo Delphi<p>Hey! I got an <a href="https://rubber.social/tags/electronics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electronics</span></a> and <a href="https://rubber.social/tags/electricalengineering" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electricalengineering</span></a> question for the fedi mind hive!</p><p>What do you believe is the more long-term accurate clock source: Quartz or mains AC?</p><p>Why do you believe this?</p><p>I want to decide on a primary clock signal source for Horologium Keplerus, but I can't decide between quartz or mains AC.</p>
Academic Europe<p>Research Fellow in Heat Transport &amp; Advanced Thermal Management for Radiative Cooling</p><p>Deadline: 2025-09-15<br>Location: England, London</p><p><a href="https://www.academiceurope.com/ads/research-fellow-in-heat-transport-advanced-thermal-management-for-radiative-cooling/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">academiceurope.com/ads/researc</span><span class="invisible">h-fellow-in-heat-transport-advanced-thermal-management-for-radiative-cooling/</span></a></p><p><a href="https://mstdn.business/tags/hiring" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>hiring</span></a> <a href="https://mstdn.business/tags/ElectricalEngineering" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ElectricalEngineering</span></a> <a href="https://mstdn.business/tags/energyengineering" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>energyengineering</span></a> <a href="https://mstdn.business/tags/MaterialsScience" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MaterialsScience</span></a> <a href="https://mstdn.business/tags/MechanicalEngineering" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MechanicalEngineering</span></a> <a href="https://mstdn.business/tags/Physics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Physics</span></a> <a href="https://mstdn.business/tags/Postdoc" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Postdoc</span></a></p>
Harvey Sandstrom<p>Something I have never understood: What is the point of having an IP67 tactile switch, when there's no way to seal against a panel, and therefore the terminals can just get wet and likely short the switch? It only ensures it will work again once the board dries out??? <a href="https://mastodon.social/tags/electronics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electronics</span></a> <a href="https://mastodon.social/tags/ElectricalEngineering" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ElectricalEngineering</span></a> <a href="https://mastodon.social/tags/buttons" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>buttons</span></a> <a href="https://mastodon.social/tags/PhysicalUserInterfaces" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>PhysicalUserInterfaces</span></a> <a href="https://www.sameskydevices.com/blog/tactile-switches-101" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">sameskydevices.com/blog/tactil</span><span class="invisible">e-switches-101</span></a></p>
US<p><a href="https://www.europesays.com/us/93496/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="">europesays.com/us/93496/</span><span class="invisible"></span></a> A qubit update | Nature Electronics <a href="https://pubeurope.com/tags/Computing" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Computing</span></a> <a href="https://pubeurope.com/tags/ElectricalAndElectronicEngineering" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ElectricalAndElectronicEngineering</span></a> <a href="https://pubeurope.com/tags/ElectricalEngineering" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ElectricalEngineering</span></a> <a href="https://pubeurope.com/tags/Industry" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Industry</span></a> <a href="https://pubeurope.com/tags/Technology" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Technology</span></a> <a href="https://pubeurope.com/tags/UnitedStates" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>UnitedStates</span></a> <a href="https://pubeurope.com/tags/UnitedStates" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>UnitedStates</span></a> <a href="https://pubeurope.com/tags/US" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>US</span></a></p>
Captain_Faraday :fedora:<p>Ah yes, the curious device called the "Turboencabulator" developed General Electric in 1962. Attached is a datasheet describing this marvel of electrical engineering from decades past. There are many of these devices working in power plants around the world! :data_pipe: :troll: </p><p><a href="https://social.linux.pizza/tags/turboencabulator" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>turboencabulator</span></a> <a href="https://social.linux.pizza/tags/electricalengineering" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electricalengineering</span></a> <a href="https://social.linux.pizza/tags/powerengineering" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>powerengineering</span></a> <a href="https://social.linux.pizza/tags/ge" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ge</span></a> <a href="https://social.linux.pizza/tags/engineering" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>engineering</span></a> <a href="https://social.linux.pizza/tags/engineeringjokes" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>engineeringjokes</span></a> <a href="https://social.linux.pizza/tags/engineeringmarvels" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>engineeringmarvels</span></a> <a href="https://social.linux.pizza/tags/engineeringwonders" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>engineeringwonders</span></a> <a href="https://social.linux.pizza/tags/electricity" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electricity</span></a></p>
NaClKnight. Who? NaClKnight!<p>Im a Mechanical Engineer, not Electrical, but these are still hella cool</p><p>PCB reference books with pages made from actual USB-C powered PCBs </p><p><a href="https://www.tomshardware.com/tech-industry/pcb-reference-books-with-pages-made-from-actual-usb-c-powered-pcbs-are-now-available-at-usd37-each" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">tomshardware.com/tech-industry</span><span class="invisible">/pcb-reference-books-with-pages-made-from-actual-usb-c-powered-pcbs-are-now-available-at-usd37-each</span></a></p><p><a href="https://c.im/tags/Engineering" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Engineering</span></a> <a href="https://c.im/tags/ElectricalEngineering" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ElectricalEngineering</span></a> <a href="https://c.im/tags/PCB" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>PCB</span></a> <a href="https://c.im/tags/Electronics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Electronics</span></a> <a href="https://c.im/tags/Book" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Book</span></a></p>
Queen Calyo Delphi<p>Hm.</p><p>Another perennial debate as an <a href="https://rubber.social/tags/electronics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electronics</span></a> and <a href="https://rubber.social/tags/electricalengineering" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electricalengineering</span></a> hobbyist:</p><p>Do I buy only as many units as I need for this one project I'm working on now?</p><p>Or do I buy enough to get the next price breakpoint and have spares for future projects I have not yet planned?</p><p>🤔 </p><p>(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: <a href="https://www.digikey.com/en/products/detail/texas-instruments/CD4059AM/1691226" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">digikey.com/en/products/detail</span><span class="invisible">/texas-instruments/CD4059AM/1691226</span></a> )</p>
Academic Europe<p>Job - Alert </p><p>Wissenschaftliche*r Mitarbeiter*in (m/w/d) Professur für Elektronik </p><p>Deadline: 2025-08-13<br>Location: Germany, Hamburg &nbsp;</p><p><a href="https://www.academiceurope.com/ads/wissenschaftlicher-mitarbeiterin-m-w-d-professur-fur-elektronik/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">academiceurope.com/ads/wissens</span><span class="invisible">chaftlicher-mitarbeiterin-m-w-d-professur-fur-elektronik/</span></a></p><p><a href="https://mstdn.business/tags/hiring" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>hiring</span></a> <a href="https://mstdn.business/tags/physics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>physics</span></a> <a href="https://mstdn.business/tags/Electronics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Electronics</span></a> <a href="https://mstdn.business/tags/electricalengineering" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electricalengineering</span></a> <a href="https://mstdn.business/tags/informationstechnology" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>informationstechnology</span></a> <a href="https://mstdn.business/tags/Promotion" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Promotion</span></a> <a href="https://mstdn.business/tags/semiconductorsphysics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>semiconductorsphysics</span></a></p>
Harvey Sandstrom<p>My mid-level analog <a href="https://mastodon.social/tags/electricalengineering" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electricalengineering</span></a> skills have always been a bit shit. It took me a while to dig up the "proper" way to be able to duty-cycle a voltage divider so that it doesn't (constantly) contribute to quiescent current when monitoring a battery. It's not terribly hard to find a combination n-fet and p-fet in one package to reduce the footprint. If you know of something even simpler I'd love to see it. <a href="https://electronics.stackexchange.com/a/562942" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">electronics.stackexchange.com/</span><span class="invisible">a/562942</span></a></p>

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! 😄

Continued thread

Update!

@MeiLin gave me the search engine shibboleth I needed to find this web page with a lovely and clever transistor circuit that I can try out!

It's even simple enough for me to try to breadboard it!

dos4ever.com/ring/ring.html

Edit:
... Oh wait this emulated schockley diode circuit requires obscene voltages in order to exceed the avalanche breakdown Vec. I uh... can't use that. I'll need to find other solutions. :x

www.dos4ever.comRing Counter Variations
Continued thread

This circuit would be so much easier to implement if I would just let myself use J/K flip-flops, but:

1. the only cheap ones available are duals in 16-pin packages when I only need one per ring node and each ring node is an independent pcb, and

2. I very explicitly decided that the light at each node MUST be surrounded by a curious cloud of discrete components for the sake of art 😤

Oh gods, I'm gonna have to find resources to study up about resistor-transistor, diode-transistor, and transistor-transistor logic, if I want to be able to implement the round-robin circuit for the Horologium Keplerus using discrete transistors. >.>;;

I guess RFC for links to resources if anybody has useful links that can cut through the less than optimal search engine algorithms that almost only return SEO'd blogs that have no meaningful information?

I am *very* temptedly considering something extremely cursed:

Abusing an "ultra thin" ethernet cable to bring +12V+GND to a control box that needs only a few mA max, and 3x 5V differential signals back out to the thing being controlled.

"ultra thin" ethernet cables typically use 30AWG conductors which have a max power transmission ampacity of ~142mA, way more than enough to power the control box.

I'm pretty certain the insulation inside can handle 12V. 🤔

Hey everyone! I've made the jump from Mastodon.Social and wanted to introduce myself. I'm an electrical engineer living in the southeastern USA.

You'll find me tooting about Linux, FOSS, Python, and scripting. When I'm not on the keyboard, I'm into photography, hiking, and enjoying nature with my spouse.

Also, I have two black cats that pay rent with their winning personalities and love. lol :rickdance:

Looking forward to connecting in this community! Don't hesitate to say hello.