Activity for Olin Lathropâ€
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
| Edit | Post #286033 |
Post edited: |
— | over 2 years ago |
| Edit | Post #286033 | Initial revision | — | over 2 years ago |
| Answer | — |
A: Case temperature of MOSFET Yes, you seem to understand the concept. From the case to the ambient air, there will be 1.3°C per watt across the pad, and another 2.0°C per watt across the heatsink. In total, there will be 3.3°C per watt from case to ambient air. Since the part is dissipating 10 W, the case will b... (more) |
— | over 2 years ago |
| Edit | Post #286030 | Question closed | — | over 2 years ago |
| Comment | Post #286030 |
Important information to a question must be in the question itself. That also allows distilling down to the relevant information. I did try to look at your "a" link, but that was a whole web page with lots of babble and multiple diagrams. Put at least one example from each of your groups here in t... (more) |
— | over 2 years ago |
| Edit | Post #286021 |
Post edited: |
— | over 2 years ago |
| Edit | Post #286021 | Initial revision | — | over 2 years ago |
| Answer | — |
A: How to choose the right value for input voltage ripple of an SMPS? There are two issues with input voltage ripple: The input voltage being too high or low for correct operation, and high frequency noise on the input. The first is pretty straight forward. You make sure that the nominal voltage ± the peak ripple is never above or below the guaranteed operat... (more) |
— | over 2 years ago |
| Edit | Post #286014 | Initial revision | — | almost 3 years ago |
| Answer | — |
A: PCB ground planes with isolated voltage Your description is confusing due to lots of hand waving, so it is hard to be specific. However, an isolated section should be separated from the non-isolated parts laterally. It depends on the exact spec or certification you are going after, but usually 5 mm is good. It can be more than that, lik... (more) |
— | almost 3 years ago |
| Edit | Post #285991 | Initial revision | — | almost 3 years ago |
| Answer | — |
A: Press fit PCB receptacle for plated holes (Marked for non-plated holes) Considering that the same manufacturer has models specifically for plated holes too, it probably matters. One thing that I noticed in looking around is that the models for unplated holes have a knurled collar, whereas the ones for plated were hexagonal there. My guess is that the knurling is me... (more) |
— | almost 3 years ago |
| Edit | Post #285815 |
Post edited: |
— | almost 3 years ago |
| Comment | Post #285921 |
This answer could be better, but it's written well enough, not wrong, and does supply some useful information. I wouldn't have normally upvoted it, but it doesn't deserve to be labeled a net negative. (more) |
— | almost 3 years ago |
| Edit | Post #285930 | Initial revision | — | almost 3 years ago |
| Answer | — |
A: Why are there more N type than P type MOSFETs? There are two predominant reasons you see N channel FETs more than P channel: N channel is the natural polarity for ground-referenced switches controlling loads with positive voltages. This is convenient because most controlling circuitry is ground-referenced too, with positive supply. With th... (more) |
— | almost 3 years ago |
| Comment | Post #285854 |
Don't just tell me you're up for it. Help build a consensus at https://electrical.codidact.com/posts/285889 (more) |
— | almost 3 years ago |
| Comment | Post #285854 |
The setting has been changed so that new users don't automatically get the Participate Everywhere privilege. That means they can't downvote until they get a few positive votes themselves. (more) |
— | almost 3 years ago |
| Comment | Post #285854 |
We are discussing making downvotes public. If you want to see reform, it would be helpful if you weighed in. (more) |
— | almost 3 years ago |
| Comment | Post #285913 |
Stalker can harass you on SE *because* of the hidden voting, not despite it. (more) |
— | almost 3 years ago |
| Comment | Post #285913 |
These are the same arguments we here all the time, about what some people think <i>might</i> happen. There is no evidence. I think you're wrong. We won't know until it is actually tried. Until then we'll continue to have this <i>no it won't, yes it will</i> pissing contest. (more) |
— | almost 3 years ago |
| Comment | Post #285907 |
@#53042 I really don't think it will get to that in the vast majority of times. Any system will have its problems. Don't forget that the current system has substantial problems this is trying to solve. It's easy to get caught up in the potential downside, but forget the very real downside of the s... (more) |
— | almost 3 years ago |
| Comment | Post #285907 |
Vandals and retribution voters tend to hit only high-profile users, especially those that explain what they think is wrong with others' posts. In other words, responsible users will publicly explain problems, but then be targeted by anonymous retribution. That makes it less likely people will expre... (more) |
— | almost 3 years ago |
| Comment | Post #285892 |
@Monica Rep *should* be at least part of earning abilities. I remember from early on that there was supposed to be a blended formula so that activity and rep could be weighted as desired. We don't want people being able to do important things on the site just because they have done a number of them... (more) |
— | almost 3 years ago |
| Comment | Post #285889 |
@#53042 You can still downvote for whatever reason you like, just that you will be judged by all users whether you are being reasonable. Mods wouldn't step in unless the stated reason is blatantly made up or ridiculous.
You like to complain about others being rude, but belittling Andy getting vic... (more) |
— | almost 3 years ago |
| Comment | Post #285892 |
I agree with new user's shouldn't be able to downvote, except answers to their own questions. 100 rep sounds about right to allow downvoting in general. That would thwart the trolls and sock puppets. They'd have a hard time building up 100 rep. Even then, they'd get to use that only once before t... (more) |
— | almost 3 years ago |
| Comment | Post #285889 |
Yes, please remove any rep change from votes on meta. This is one of the things Elsewhere got right. (more) |
— | almost 3 years ago |
| Edit | Post #285889 |
Post edited: |
— | almost 3 years ago |
| Edit | Post #285889 |
Post edited: |
— | almost 3 years ago |
| Edit | Post #285889 |
Post edited: |
— | almost 3 years ago |
| Comment | Post #285878 |
I agree that those downvotes make no sense. Some vandal has created multiple accounts. (more) |
— | almost 3 years ago |
| Edit | Post #285889 | Initial revision | — | almost 3 years ago |
| Question | — |
Let's make all downvotes public One of the aggrevations Elsewhere were all the vandal and retribution downvotes. They never took the problem seriously. Now it's happening here. Andy was the latest target, twice, recently. I've also had this happen to me on other Codidact sites, like Outdoors. All downvotes should be public ... (more) |
— | almost 3 years ago |
| Comment | Post #285878 |
I agree. New users should only be allowed to downvote answers to their own questions. (more) |
— | almost 3 years ago |
| Comment | Post #285876 |
Sorry about all this. It looks like the team already handled it while I was sleeping. I've seen vandal or retribution downvotes on other Codidact sites too. This was one of the aggrevations Elsewhere, and now it's happening here. It's time we made all downvotes public, at least here on EE as a tes... (more) |
— | almost 3 years ago |
| Edit | Post #285849 |
Post edited: Annoying slang removed. Don't be so lazy next time. |
— | almost 3 years ago |
| Comment | Post #285864 |
The bullet points you list are from the examples section. They are not meant to be exhaustive. The actual definition is a bit broader. (more) |
— | almost 3 years ago |
| Edit | Post #285871 | Initial revision | — | almost 3 years ago |
| Answer | — |
A: Creating an "Insights" category We have such low volume as it is, that I wouldn't want to see another category added at this time. It would only emphasize how little traffic there is. Let's not make the same mistake that Photography made. They have lots of mostly-empty categories. Some day when there is enough content, I co... (more) |
— | almost 3 years ago |
| Edit | Post #285856 |
Post edited: |
— | almost 3 years ago |
| Edit | Post #285860 | Initial revision | — | almost 3 years ago |
| Answer | — |
A: Creating an "Insights" category What you describe is already allowed in Papers. See electrical.codidact.com/help/papers. The papers by Circuit Fantasist are well on topic. Presenting a concept in an accessible way is OK. I haven't upvoted most of those papers either, but that's because I think his teaching style, and particul... (more) |
— | almost 3 years ago |
| Edit | Post #285856 |
Post edited: |
— | almost 3 years ago |
| Edit | Post #285856 | Initial revision | — | almost 3 years ago |
| Answer | — |
A: Flyback transformer for Vout > Vin A higher voltage can be produced at 1:1 ratio because the transformer is being run in flyback mode. Unlike normal forward mode, the primary and secondary don't conduct at the same time. The input pulse builds up current in the primary. This does produce the same voltage on the secondary. Howeve... (more) |
— | almost 3 years ago |
| Comment | Post #285854 |
Update: I've been informed that the Codidact team found that the downvotes were done from a new account with a throw-away email address. The downvotes will be removed, but this is a delicate operation, and the right people have to get involved, spanning time zones. It will be fixed, but may take a l... (more) |
— | almost 3 years ago |
| Comment | Post #285854 |
I agree about downvotes should be visible to all. (more) |
— | almost 3 years ago |
| Comment | Post #285851 |
This question is off topic because it is about the use of electronic devices, not their design or theory of operation.
In short you plugged a device into an outlet with very vague specs, which turned out to be incompatible with your device. Bzzt. Poof. You're luck nothing caught fire or that yo... (more) |
— | almost 3 years ago |
| Edit | Post #285851 | Question closed | — | almost 3 years ago |
| Edit | Post #285847 |
Post edited: |
— | almost 3 years ago |