Activity for Lorenzo Donati
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
| Edit | Post #289090 | Initial revision | — | 9 months ago |
| Answer | — |
A: Is the noise of op-amps and ADCs Gaussian, possibly with zero mean? Your title question about the "Gaussianity" brings up a lot of thorny issues, since noise in electronic components is quite a difficult topic from a physical, fundamental point of view. TL;DR: From a designer perspective: + Noise is assumed to have zero mean because even if it had non-zero m... (more) |
— | 9 months ago |
| Suggested Edit | Post #289056 |
Suggested edit: Cleaned up formatting and wording. Added math formatting. (more) |
helpful | 9 months ago |
| Edit | Post #289074 |
Post edited: |
— | 9 months ago |
| Edit | Post #289074 | Initial revision | — | 9 months ago |
| Answer | — |
A: Is English translation of technical terms on-topic? I think we should definitely allow technical terms translations, because it's really difficult to find reliable sources online. And the translation process can be tricky, since the translated term can be context sensitive. Some examples in Italian: array antennas --> antenne a schiera ("schiera" h... (more) |
— | 9 months ago |
| Edit | Post #289073 | Initial revision | — | 9 months ago |
| Answer | — |
A: Creating a FAQ: how to read a datasheet I agree with Olin and Mu3 answers. I'll add that you should aim not for just one kind of "high level" component, but many more basic ones. Not every EE course is the same across the world, and many different degrees fall under the EE umbrella term, and not every one of them has the same level of e... (more) |
— | 9 months ago |
| Edit | Post #288969 |
Post edited: |
— | 10 months ago |
| Comment | Post #288971 |
@#36396 BTW, Interesting the hint of using pots instead of fixed resistors. Maybe is there a slightly more complex setup or a different technique that allows (maybe with more complicated math) to use shorter cables?
Math with complex numbers is OK(-ish), since it can be implemented in a spreadshe... (more) |
— | 10 months ago |
| Comment | Post #288971 |
@#36396 Thank you very much for your detailed explanation!
The only problem is the length of the cable. We don't have so much cable at school (essentially we would use scraps from various installations or old instruments, which often are between 80cm and 1.5m in length – typical example is ... (more) |
— | 10 months ago |
| Edit | Post #288969 |
Post edited: |
— | 10 months ago |
| Edit | Post #288969 | Initial revision | — | 10 months ago |
| Question | — |
Is there an easy way to measure the characteristic impedance of a cable using basic lab instruments? As the title says, I'm interested in a simple technique to measure the characteristic impedance of a cable using only the instruments available in a school lab or to a (somewhat advanced) hobbyist. In particular: + Digital oscilloscope with 50MHz bandwidth and simple passive probes (x1, x10). ... (more) |
— | 10 months ago |
| Edit | Post #288964 |
Post edited: |
— | 10 months ago |
| Edit | Post #285201 |
Post edited: Replaced link to dubious website (required enabling javascript and cookies), with direct link to PDF document from the original publisher of the poster. |
— | 10 months ago |
| Suggested Edit | Post #285201 |
Suggested edit: Replaced link to dubious website (required enabling javascript and cookies), with direct link to PDF document from the original publisher of the poster. (more) |
helpful | 10 months ago |
| Edit | Post #288964 |
Post edited: |
— | 10 months ago |
| Edit | Post #288964 |
Post edited: |
— | 10 months ago |
| Edit | Post #288964 | Initial revision | — | 10 months ago |
| Answer | — |
A: Is ESD overhyped? Something that hasn't been mentioned in other posts yet is that ESD events needn't be utterly destructive. Most ESD events are "microevents". That is, they don't damage a part by rendering it non-operative, but they simply degrade its characteristics. This is more evident in parts used for their p... (more) |
— | 10 months ago |
| Edit | Post #287400 |
Post edited: Removed "stray" words (possible leftover from previous editing?). |
— | 10 months ago |
| Suggested Edit | Post #287400 |
Suggested edit: Removed "stray" words (possible leftover from previous editing?). (more) |
helpful | 10 months ago |
| Edit | Post #288954 |
Post edited: |
— | 10 months ago |
| Edit | Post #288954 | Initial revision | — | 10 months ago |
| Answer | — |
A: How can we grow this community? I just submitted a proposal to DuckDuckGo here for a new "bang" for their search syntax. If approved: `!coddee searchterm` will trigger the following URL: `https://electrical.codidact.com/posts/search?search=searchterm` I did the same for SW Development Codidact (here the announcement). ... (more) |
— | 10 months ago |
| Edit | Post #288922 |
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— | 10 months ago |
| Edit | Post #288922 |
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— | 10 months ago |
| Edit | Post #288922 |
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— | 10 months ago |
| Edit | Post #288922 |
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— | 10 months ago |
| Edit | Post #288922 |
Post edited: Typos in math formatting. |
— | 10 months ago |
| Edit | Post #288922 | Initial revision | — | 10 months ago |
| Question | — |
Are a JFET's Idss and Vgs(off) values correlated? I know that many JFETs parameters have a very large manufacturing spread, in particular, $I{DSS}$ and $V{GS(off)}$, as one can see (for example) in this datasheet excerpt: J175/J176 datasheet header ... J175/J176 datasheet - electrical characteristics table My question is if the spread of... (more) |
— | 10 months ago |
| Comment | Post #288641 |
@#52935 BTW, sometimes commercial products can be incredibly sturdy, despite their price tag. I still use a Logitech wireless keyboard purchased more than *at least* 18 years ago! I use it daily and the silkscreen on the keys has not worn off a bit, despite the plastic having become a bit glossy from... (more) |
— | 10 months ago |
| Comment | Post #288641 |
@#52935 Hi Nick! I understand your concerns, but again, the smoke that may cloud non-technical people vision in a general news forum should not affect us. We are not flooded with questions or answers, so we have no problems of dumb answers given by some random guy who just want to post some opinionat... (more) |
— | 10 months ago |
| Comment | Post #288641 |
@#52935 I'm definitely with Olin here. This site is about education and the willingness to learn. The fact that a curiosity was prompted by the news is irrelevant. The question should be based on its own merit, and Olin has already stated those. There is no shame for a newbie or a non specialist to a... (more) |
— | 10 months ago |
| Comment | Post #286121 |
Very nice breakdown. A good reference to keep around, especially for newbie people that lack the experience for guessing MISRA-C (and other guidelines for embedded) rationale. (more) |
— | 10 months ago |
| Edit | Post #288890 | Initial revision | — | 10 months ago |
| Answer | — |
A: What material is used in the tabs of power packages? (TO-220, D2PAK, etc.) A definitive answer is hard to give, since the information is not easily available. However, after a bit of research I'm inclined to believe that the most common materials are copper, copper alloys or sometimes Fe-Ni alloys, plated with some other material to prevent oxidation. Note that the tab i... (more) |
— | 10 months ago |
| Edit | Post #282671 |
Post edited: Substituted formula images with MathJax syntax (with corrections). Some grammar edit. |
— | over 2 years ago |
| Comment | Post #283265 |
Bottom line: **never use XOR gates with more than 2 inputs if you want to avoid misunderstandings**. Even if you place a big caveat in the design notes or even on the schematic, chances are someone will miss it and guess the wrong semantics for that gate. In some situations this will ruin someone's d... (more) |
— | over 2 years ago |
| Edit | Post #282820 |
Post edited: |
— | almost 3 years ago |
| Comment | Post #282848 |
OK, no problem. I value your opinion. I have no strong feelings about those disclaimers, anyway. (more) |
— | almost 3 years ago |
| Comment | Post #282850 |
I think your idea of creating another category is the way to go long term. Textbook-like material doesn't lend itself too well to be put in Q+A form, IMO, and the Q would be really artificial most of the times. And a waste of time to get right, since the essence of the thing lies entirely in the answ... (more) |
— | almost 3 years ago |
| Comment | Post #282849 |
I'm not convinced that citing EESE would be so harmful (note that I'm *not* going to link to the original answer). It's highly probable that someone searching the web would find EESE answers first, so I don't think we do them any favor by stating their name.
On the contrary, it may also mildly ma... (more) |
— | almost 3 years ago |
| Comment | Post #282849 |
Your points 2, 3 and 4 are really about what I intended to do. The disclaimer I planned to insert have the purpose to avoid people finding the answer on EESE and thinking that I plagiarized that content. Even if it was really mine, I bet that many people won't check the name of the poster (even if I ... (more) |
— | almost 3 years ago |
| Comment | Post #282849 |
I agree that bulk-importing all my content from EESE is not a good thing. Something is too specific to the original question, which is too specific as well, and something would require too much work to adapt. So I already intended to only migrate only select answers.
Note that my plan already was ... (more) |
— | almost 3 years ago |
| Edit | Post #282848 | Initial revision | — | almost 3 years ago |
| Answer | — |
A: What are the guidelines for porting one's answers from ElectricalEngineering.SE, if any? Since my question didn't get an answer yet, I post this answer as a possible solution. What I'll describe is not meant to be the right way to port an answer from SE network, but just a possible right way. So if you feel another approach could work as well, please add an answer here. Premise... (more) |
— | almost 3 years ago |
| Suggested Edit | Post #282671 |
Suggested edit: Substituted formula images with MathJax syntax (with corrections). Some grammar edit. (more) |
helpful | almost 3 years ago |