Activity for Olin Lathrop
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
| Comment | Post #278933 |
It is hard to see the circuits from your schematics with all those lines in them. There is just too much clutter all around. (more) |
— | over 3 years ago |
| Comment | Post #278819 |
**Note to commenters:** This is not the place to discuss what kind of scopes you have and what they are good for. First, that doesn't belong in a comment at all. Second, the issue here is what might be on topic on the main site, not about scopes. (more) |
— | over 3 years ago |
| Comment | Post #278793 |
This is meta, so downvotes only mean disagreement. No big deal. You also don't know who voted and which way they voted. In this case, the user with the obnoxious name with blanks and two dots (that should be disallowed) was being snarky (no real harm in that), but you can't assume he downvoted, or... (more) |
— | over 3 years ago |
| Comment | Post #278760 |
@LvW: You are asking about many different circuits, and mixing two different concepts into the same question: Whether people recognize the names you used above to know the circuits, and whether they know of real life uses for those circuits. That's too much for one question, and makes the composite ... (more) |
— | over 3 years ago |
| Comment | Post #278760 |
@LvW: I've already told you what to do if you want to know what common applications a particular device has. (more) |
— | over 3 years ago |
| Comment | Post #278760 |
@LvW: So you're really asking if anyone recognizes the names or abbreviations. They may have used a circuit like that, but be unaware of what you call it. However, that's not how your question reads. It's written implying we are all supposed to know what those names mean. (more) |
— | over 3 years ago |
| Comment | Post #278616 |
Extended discussions in comments deleted. If you want to argue technical points, put them in your answers. (more) |
— | over 3 years ago |
| Comment | Post #278760 |
This question is too broad, and the answers will be vague at best since "significance" is very subjective. In addition, the circuits you ask about need to be defined, preferably with schematic. These names aren't standard, or at least not in common use. It could be OK to have each circuit in a sep... (more) |
— | over 3 years ago |
| Comment | Post #278670 |
@Peter: Then I'd have to read and vet his articles first. I've done measurements too. (more) |
— | over 3 years ago |
| Comment | Post #278718 |
@manas: Yes, the power dissipation of multiple resistors do add, assuming they are spaced far enough to not significantly heat each other. The voltage rating also adds when the resistors are in series. However, the question wasn't about either of these. (more) |
— | over 3 years ago |
| Comment | Post #278707 |
Unfortunately all too often X can't really deliver 3-6 months faster. They are misleading the customer to get the job, figuring they'll get the extra later when the customer is already committed and can't easily go back to a more honest contractor. (more) |
— | over 3 years ago |
| Comment | Post #278707 |
I generally agree, except that how competitors are perceived to perform should NOT be part of any estimate. For estimates to be useful, they need to be honest assessments, and not based on wishful thinking. That causes much trouble later in the project. (more) |
— | over 3 years ago |
| Comment | Post #278703 |
I don't think it's worthy of a downvote, so have an upvote from me. (more) |
— | over 3 years ago |
| Comment | Post #278602 |
@manas: I was trying to be blunt in what someone's thought process would be. Some people need to hear that. Nobody is being called an asshole. Actually, in one place I had a bunch of characters (number sign, dollar sign, at sing, ampersand) like they show in cartoons sometimes, but something trigg... (more) |
— | over 3 years ago |
| Comment | Post #278548 |
@Circuit: But that's not what you did. If you have an idea in mind that you want validated, *ask about it specifically*. What you really did was grandstanding masquerading as a question. This will **not be tolerated** in the future. Consider yourself on thin ice. Future questions that aren't spe... (more) |
— | over 3 years ago |
| Comment | Post #278548 |
@Circuit: If you already had a specific idea you weren't sure of, then why didn't you ask about that? If you already had an answer, then what was the point of asking the question in the first place? Either way, it seems you were just wasting other people's time. (more) |
— | over 3 years ago |
| Comment | Post #278484 |
@2kind: The secondary already needs to put out a bit higher voltage than you actually want. You don't want to do every pulse in a pulse on demand system, since that means there is no margin for higher current demand. I have used a linear post-regulator a few times, usually not for reduced ripple, b... (more) |
— | over 3 years ago |
| Comment | Post #278478 |
Your original question asked "which is better". We don't do opinion-based answers here. I have edited your question to fit the site, else we would have to close it completely. (more) |
— | over 3 years ago |
| Comment | Post #278421 |
@coq: No need to edit the question. The note makes it clear enough what is going on. (more) |
— | over 3 years ago |
| Comment | Post #278354 |
The circuit you show has nothing to do with any "bootstrap" technique. Its a R-C low pass filter followed by a unity gain buffer. The rolloff frequency is 1/2πRC, which is 1.6 Hz for the 1 MΩ and 100 nF part values you cite. (more) |
— | over 3 years ago |
| Comment | Post #277844 |
@Andy: Basically, using a PNP transistor around an LDO to detect input voltage high/low has been useful a few times, and I haven't seen it mentioned anywhere else. I may have generalized the problem too much so that it's not clear what the cute trick is. I should probably modify the *The Problem* s... (more) |
— | over 3 years ago |
| Comment | Post #278192 |
You really need to step back and look at the whole problem, not the details of one imagined solution to the higher level problem. You are apparently trying to measure electric fields. Ask about that directly in a separate question. In particular, explain what fields you are trying to measure, thei... (more) |
— | over 3 years ago |
| Comment | Post #278161 |
@Lundin: Yes, I've been meaning to write up something about schematic drawing. I was originally going to add more to the SE post on that, but the mods turned it into community wiki and I lost control over it, so I gave up. (more) |
— | over 3 years ago |
| Comment | Post #278161 |
@Lundin: BOM optimizations are tricky because they can easily devolve to prices and vendors. That's probably why the question on SE was closed. I think our rules here are about the same as on SE. Maybe they just closed it quickly, or maybe it really did cross the line into prices and vendors. I s... (more) |
— | over 3 years ago |
| Comment | Post #278066 |
@coq: I'm only looking at the circuit you posted as-is. I don't know what context or description might have come with it in any particular book, and that isn't relevant here anyway since you didn't specifically ask about that. Perhaps there is a flaw in my logic. If so, please point it out. (more) |
— | over 3 years ago |
| Comment | Post #277952 |
Too much unclear hand waving. Show a schematic. It is particularly confusing what all this buck converter is connected to, and how it relates to the MOSFET. (more) |
— | over 3 years ago |
| Comment | Post #277912 |
Seems reasonable, +1. (more) |
— | over 3 years ago |
| Comment | Post #277550 |
@aditya: C37 is not relevant to the question, and details about it would only distract and add confusion here. Ask a separate question if you want to get into that. (more) |
— | over 3 years ago |
| Comment | Post #277845 |
*"on the output of a SMPS I recently bought because it was too high for the circuit I'm making"* What does it mean for an SMPS to be "too high"? Do you mean it's output voltage? Are you trying to lower the voltage with a filter? At first I thought you were trying to filter out ripple, but on clos... (more) |
— | over 3 years ago |
| Comment | Post #277845 |
Worked better than what? Show the other circuits, then it should be easy to explain why this one filters the ripple better. Also, tell us the ripple frequency you are trying to filter out. (more) |
— | over 3 years ago |
| Comment | Post #277547 |
What is the context? Where is this schematic from? How do you know it isn't just a bad design? (more) |
— | over 3 years ago |
| Comment | Post #277541 |
@Lundin: Right, but as I said, those are all in bank 15. (more) |
— | over 3 years ago |
| Comment | Post #276117 |
@tim: You should ask that as a real question. (more) |
— | almost 4 years ago |
| Comment | Post #277048 |
@coq: I misunderstood your R2. I thought you were trying to model the leakage due to the broken insulation. (more) |
— | almost 4 years ago |
| Comment | Post #277032 |
@coq: I'm an opamp kind of EE, not electrical power engineering. I do have an explanation that I think makes sense, but I was hoping one of the electrical power folks would jump in. I just got to a good break point in my day job work, so maybe I'll post my idea soon. (more) |
— | almost 4 years ago |
| Comment | Post #277032 |
I think this is a good start, +1, but I disagree that the leakage is to L1, not ground. I think there is more to it than you show. (more) |
— | almost 4 years ago |
| Comment | Post #276952 |
Show a diagram. I got lost in some of the hand waving. (more) |
— | almost 4 years ago |
| Comment | Post #276809 |
@Andy: You should be a mod here anyway (even though this has nothing to do with this particular question). You are one of the original core group that proposed this site. I don't know how to make it happen. Perhaps the admins don't realize you were one of the original core. (more) |
— | almost 4 years ago |
| Comment | Post #276809 |
I just checked, and there seems to be nothing in the mod tools to look at voting patterns at all. It would be nice if each of us could see recent rep changes, like there was on SE. I asked for that at https://meta.codidact.com/questions/276332, but was largely ignored, or it got used to malign rep ... (more) |
— | almost 4 years ago |
| Comment | Post #276763 |
I added the short description for the Papers category to the end of my question. This may change if there is consensus to do so, but we have to start somewhere. (more) |
— | almost 4 years ago |
| Comment | Post #276763 |
Thanks. Now I need to get busy adding some help pages. If only the day job would leave me alone for a while ... (more) |
— | almost 4 years ago |
| Comment | Post #276736 |
@mana: Collaboration on a paper makes sense, but we would need some new features from the system for that to work. We would need the concept of multiple authors, and a way to have drafts that only the authors can see until the paper is published. We don't want all the noise of multiple people event... (more) |
— | almost 4 years ago |
| Comment | Post #276736 |
Nobody is going to get punished for writing a bad paper, unless it's clearly spam or the like. Well intentioned but bad papers will merely get downvoted to oblivion. If the author feels that is punishment, he can always just delete the paper and it never happened. That said, papers will be held to... (more) |
— | almost 4 years ago |
| Comment | Post #276602 |
Response added to question. (more) |
— | almost 4 years ago |
| Comment | Post #276235 |
@Monica: Consider yourself pinged. (more) |
— | almost 4 years ago |
| Comment | Post #276570 |
@mana: I see you made a suggested edit, but I can't figure out what it is. I click on Review Changes, and I get two texts side by side that look the same as far as I can tell. If there is a change, the system should highlight it somehow. I don't want to approve something when I can't tell what I'm... (more) |
— | almost 4 years ago |
| Comment | Post #276570 |
@mana: But that's a bad idea some sites. I realize some don't like rep. That's fine. But they also don't want anyone else to have it on other sites where it would help. That's not fine. There needs to be a single obvious "score" somehow that shows how much a user's contributions were appreciated... (more) |
— | almost 4 years ago |
| Comment | Post #276408 |
@Brok: Your schematic shows a normal diode. You need to take more care with your schematics. You are wasting the time of the volunteers that are trying to help you. (more) |
— | almost 4 years ago |
| Comment | Post #276378 |
What Lundin said, since we can't upvote comments here. (more) |
— | almost 4 years ago |
| Comment | Post #276117 |
@Chup: That depends on the relay. For some "fast" relays, it might make a difference. For relays that take 10s of ms to switch, it probably wouldn't matter anyway. You really have to check the datasheet or ask the manufacturer if switching speed is not specified. (more) |
— | almost 4 years ago |