Activity for coquelicotâ€
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
| Comment | Post #279016 |
Basically, it could be a good article and I find it interesting, more interesting than your previous articles. The only reasons I've not upvoted it are explained just above. (more) |
— | over 3 years ago |
| Comment | Post #279016 |
@circuit fantasist. What makes this paper unclear is that you have replaced the light signal (to be compared) by a pot, probably for the sake of visualization? It took me a while to understand that, and the confusion with the "references voltage". My suggestion is: remove the pot and put a single ent... (more) |
— | over 3 years ago |
| Edit | Post #279018 | Initial revision | — | over 3 years ago |
| Question | — |
Using FET based followers and design rules Usually, voltage followers are built with bipolar transistors (or with opamps if better precision is needed). In this case, the simple rule says that the transistor emitter "follows" the input voltage one diode drop below, a somewhat approximate but understandable term. bip-follower It is per... (more) |
— | over 3 years ago |
| Comment | Post #278933 |
A tinkerer solution, probably not standard EE. But that's what I am, after all, a tinkerer. So I give you a +1 for the simplicity of this circuit. I would have done it in a somewhat "more standard" way with the battery connected to the Vcc+ via a diode, and the base of the transistor driven by an R-... (more) |
— | over 3 years ago |
| Comment | Post #278877 |
@circuit fantasist. I'm not sure I've understood (a schematic would have help), but I think this is related to the first section Debouncing in the link in the comment of Peter Mortensen just above. Maybe you can pick fig. 1 p. 11 of this document and insert it into your answer, or say something about... (more) |
— | over 3 years ago |
| Comment | Post #278793 |
@Olin. Thanks. Actually, the downvote is not what really imports for me (especially here). I just want to know why I'm being downvoted in this seemingly innocent post about a detail (am I stupid or missing something?). (more) |
— | over 3 years ago |
| Comment | Post #278793 |
Either I'm missing something, or the anonymous person with the comment above is missing something, or he dislikes the way I've initiated the discussion, or my browser is not working well. His answer and downvote do not help much to know. (more) |
— | over 3 years ago |
| Edit | Post #278793 | Initial revision | — | over 3 years ago |
| Question | — |
Name of the OP in the list of questions Is it possible to add the name of the OP near each question inside the question list? Only the name of the "last activity" person appears there. For me, that would help. I would like to see something like "Asked by Zoro, 3 months ago". (more) |
— | over 3 years ago |
| Comment | Post #278756 |
@concerned citizen. I like your answers. They provide the theoretical part that is hardly given in other answers. (more) |
— | over 3 years ago |
| Comment | Post #278766 |
+1 for this very interesting answer. I ignored that there are mandatory tests for ESD with guns (well, in fact, I never thought about that). (more) |
— | over 3 years ago |
| Edit | Post #278736 | Initial revision | — | over 3 years ago |
| Answer | — |
A: More accuracy from multiple resistors in series or parallel? That depends on whether you are just building something for yourself, say a prototype, or if you are designing a product for mass distribution. In the later case, you are subject to probability laws, and the answer of Olin is just fine. In the former case, though, you may improve the performances... (more) |
— | over 3 years ago |
| Comment | Post #278720 |
@Lundin. I fully agree with you : time estimate HAS to be done by someone with domain experience (this is also an obvious consequence of my "rule 2"). But you know, so many things have to be done and are not, or are too hard to be. (more) |
— | over 3 years ago |
| Comment | Post #278707 |
Let be honest, there may be good surprises as Lundin said, but in general, if you don't consider competitors, sooner or later you are dead. This does not contradict the "honest assessments" claim of Olin though. My opinion is that you should be as competitive as possible, as far as you remain inside ... (more) |
— | over 3 years ago |
| Comment | Post #278720 |
But when it comes to how evaluate the task "per se", all the answers invoke "experience", or "ask someone with experience". This is often not practical, especially for new entrepreneurs. This is where the rule I've given in my answer, and that I've statistically verified on me and others, could be us... (more) |
— | over 3 years ago |
| Comment | Post #278720 |
+1 for this answer, the best one in that it entirely focuses on time, while the other answers contain (good) things out of topics. Yours contains also practical advices. All the answers (except mine) describe in fact how to predict and manage the product development stages, what I summarized too quic... (more) |
— | over 3 years ago |
| Comment | Post #278703 |
Thank you, that helps! (more) |
— | over 3 years ago |
| Comment | Post #278703 |
Who has downvoted this answer? I usually don't ask this question, but it's so incredible to be downvoted for an answer to a question of this level of generality, and that is a matter of experience, that I cannot prevent myself. In addition my answer is much similar to that of Olin that has got 2 poin... (more) |
— | over 3 years ago |
| Edit | Post #278703 |
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— | over 3 years ago |
| Edit | Post #278703 |
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— | over 3 years ago |
| Edit | Post #278703 |
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— | over 3 years ago |
| Edit | Post #278703 | Initial revision | — | over 3 years ago |
| Answer | — |
A: How to estimate time of completion while developing an electronic product? I'm actually an algorithmic engineer, not an electronic engineer. But your question is extremely general, and valid for every field of engineering. Also, it obviously depends upon the human and technical resources available to you. So, it cannot be answered at this level. Nevertheless, according ... (more) |
— | over 3 years ago |
| Comment | Post #278617 |
@LvW. There are too much things in you edit to be dealt here, ranging from incorrect statements to biased philosophical complaints. I think this has more or less been dealt by Olin in his answer. This QA site is not appropriate for discussions, and I'm not sure I'm interested anyway. Just an advice: ... (more) |
— | over 3 years ago |
| Edit | Post #278630 |
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— | over 3 years ago |
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— | over 3 years ago |
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| Edit | Post #278630 |
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| Edit | Post #278630 |
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— | over 3 years ago |
| Comment | Post #278670 |
@Olin. I read your articles with avidity, even if that's in the digital domain, of which I know almost nothing. Regarding the paragraph "in some rare cases...", maybe they are just the cases where it may be judicious to pass the switch operation with an analog Schmitt trigger, as you've described pr... (more) |
— | over 3 years ago |
| Comment | Post #278630 |
Maybe you have to learn to cancel common factors in numerator and denominators of fractions. Here is the rule: ac/bc = a/b. In our case, c is just the exponential term, hence it vanishes. I definitely stop here. (more) |
— | over 3 years ago |
| Comment | Post #278630 |
@LvW. Not 60%, but 100% of the relevant published sources speak about the Ebers-Moll model, as it is absolutely necessary to explain finest effects. That's not the point of your question and you know that. The last line is not a correlation, but the exact meaning of "transistors are, under general co... (more) |
— | over 3 years ago |
| Comment | Post #278614 |
@a concerned citizen. Nice, I finally got a real answer to my question (I will now work it more closely). Admittedly, that's complicated (a chance I am a mathematician). But that is what I originally wanted. Regarding the XY problems, they tend to focus too much on them, and to give them too much imp... (more) |
— | over 3 years ago |
| Edit | Post #278630 |
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— | over 3 years ago |
| Comment | Post #278630 |
@LvW. See my edit. And unless you and your friends are about 60% of the EE in the planet, you are wrong. (more) |
— | over 3 years ago |
| Edit | Post #278630 |
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— | over 3 years ago |
| Comment | Post #278614 |
Yes, you are right, I missed that (decibels fooled me). Not what I originally desired. I am still curious about the other things though. (more) |
— | over 3 years ago |
| Edit | Post #278630 |
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— | over 3 years ago |
| Comment | Post #278630 |
@Circuit fanstasist. This is not "my thoughts" but the thoughts of 99.999% of the EE on the planet. Regarding the rest, see my edit in the question. (more) |
— | over 3 years ago |
| Edit | Post #278630 |
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— | over 3 years ago |
| Edit | Post #278630 |
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— | over 3 years ago |
| Edit | Post #278630 | Initial revision | — | over 3 years ago |
| Answer | — |
A: Why Ib=const. for BJT output characteristics Ic=f(Vce) > In some books and other technical papers (also from universities) it is - surprisingly - still claimed that the bipolar transistor (BJT) would be a current-controlled element. And this is true, subjected to some conditions and approximations. >This is simply stated - without any explanatio... (more) |
— | over 3 years ago |
| Comment | Post #278614 |
Your answer is great from the practical point of view, but I don't know how you arrived to these design rules (I mean, number of stages etc.), which was the essence of the question. What calculator did you use that allowed you to arrive to those results ? is it available freely? If you can elaborate ... (more) |
— | over 3 years ago |
| Comment | Post #278614 |
What a magnificent answer! I'm even surprised: it now appears that this is quite possible: I would choose the elliptic 6 stage elliptic II with 1-2 mv ripple, with banal 1% resistors and 5% cap!!!
In your answer, I don't know what you mean by CGIC: is it an IC or the name of a filter? Also, what d... (more) |
— | over 3 years ago |
| Comment | Post #278604 |
I've read your answer 2 times and have understood nothing. More specifically, your approach necessitates a good deal of visual information to make things intuitive, which is your mission. I would suggest to add schematics, a lot of schematics, inside your answers, in order to illustrate your ideas. (more) |
— | over 3 years ago |