hybridfree/eevblog-posts huggingface dataset:
Mitigating Produciton woes from wild component availability fluctuations - Page 1
Forum section: electronics / general

author: Pack34
author_rank: Frequent Contributor
timestamp: May 31, 2018, 04:53:52 pm
content: This seems to be getting out of hand. I've been building out my BOMs with multiple component alternatives and I still get kick-backs for non-stocks.Would the best course of action be just to buy the reels in 10k quantities and have the fab hold onto them? Or would this not be something that they would be interested in doing?

author: schmitt trigger
author_rank: Super Contributor
timestamp: May 31, 2018, 05:25:12 pm
content: Welcome to the brave new world of electronics manufacturing.Here where I work, we have many key components that are on allocation; and many others having leadtimes in excess of 6 months, with some extending almost a year.Whereas other vendors will increase their minimum total sales, to even consider you as a customer.And....we still face some production shutdowns because the lack of components.Of course, like anything else in this life, you can get anythingpronto, if you have plenty of money to burn.What is the solution? I really don't know. Other than making your designs simpler, with fewer and more common components, I sincerely do not know.
"Phlosophy" explained ?????? - Page 1
Forum section: electronics / general

author: GlennSprigg
author_rank: Super Contributor
timestamp: May 31, 2018, 01:04:12 pm
content: We have all heard of the 'Word', but what does it entail?Maybe it's about personal 'Thoughts' about every day 'Life'......."Who is right ??", who/what are we to believe?...I may make a statement that "I love my wife" (of say 20 years).However, who/what is it that I say I "Love" now....Over the course of that '20 years' the majority of the 'cells' in herbody have been replaced many times over... some to a lesser degree.So... WHAT is it that 'we' love about a/that 'Person'....Lets digress for a moment, and 'talk' about an OLD historical SailingShipcalled the 'Athenia'.... Many hundreds of years have passed, and overthose years, small parts of that 'Ship' had deteriorated & needed replacing.A plank here, a board here, a post or rope here & there... until say 100 yearslater the WHOLE 'ship' had been replaced....Now let's consider that 'ALL' those 'old' parts, in their ENTIRETY, were neverthrown away, but were KEPT... and now were assembled into the original Ship.What is the 'Original' ship now.... Which one is 'real' ?This is only a 'Stepping-Stone' to what it is that we 'love' Human wise....(I'm leaving it there tonight xox)

author: RoGeorge
author_rank: Super Contributor
timestamp: May 31, 2018, 01:14:53 pm
content: It might seem brutal, but one does not love "the wife" object/being, one loves the "the wife" idea, which is a representation of a real object/being in one's mind.Not trying to be rude about wives or husbands here, but there is a huge difference between the real world, and our inner representation of the real world.Other said, it is all in our own minds, and very far from the crude reality.

author: tggzzz
author_rank: Super Contributor
timestamp: May 31, 2018, 01:30:01 pm
content: You might benefit from reading "The Bluffer's Guide to Philosophy". Readily available cheaply on Amazon etc.

author: EEVblog
author_rank: Unknown
timestamp: May 31, 2018, 01:42:40 pm
content: Please don't post this off-topic stuff on the forum, this is not the place for it.Thanks.
(Aus) Telstra just gave me 50Mbps (was 30) download and 5Mbps upload (was 1) - Page 1
Forum section: electronics / general

author: wilfred
author_rank: Super Contributor
timestamp: May 30, 2018, 11:57:41 am
content: I just got an email to highlight that I can now hope to get a max of 50Mbps download increased from 30Mbps. So now when I do a speedtest and get 18.6Mbps. Instead of getting 2/3rds of the possible max I am getting 2/5ths. Bastards.I'm not even sure my primitive WLAN technology will be capable of 50Mbps throughput on a sustained basis.On the plus side if I ever want to upload YT videos I can do that at 4.4 times the rate I used to get. And that at least did work.BTW, I use the cable network.PS. Apologies to those who still only dream of 18Mbps. I am really not trying to rub salt in.

author: GreyWoolfe
author_rank: Unknown
timestamp: May 30, 2018, 12:36:11 pm
content: SWMBO and I don't much like our provider but with 100 Mbps, speed test just showed 122 Mbps download and 10 Mbps upload. The best part is my company pays $60 of the $69 a month fee.

author: digsys
author_rank: Unknown
timestamp: May 30, 2018, 12:44:52 pm
content: Same email - also cable - SE suburb - 58Mbps , 5 Mbps. Unlimited data. 5X increase in both, pity I never need use for it :-)

author: langwadt
author_rank: Super Contributor
timestamp: May 30, 2018, 01:15:12 pm
content: Quote from: wilfred on May 30, 2018, 11:57:41 amIn my experience this is something ISPs do when the speed you are on is now a lower price, so they makeup some new speed so they can charge you the same as they are used to

author: ConKbot
author_rank: Super Contributor
timestamp: May 31, 2018, 01:06:18 pm
content: Did they change update what standard they are using? Comcast just sent me wanky email about how they upgraded me to 250mbps, and my actual connection dropped from 100 to 10. Apparently my modem isn't supported now. Apparently I need a docsis3.0 modem that supports bonding 32 channels instead of the 8 channels my current docsis3.0 modem handles, (wat) or a docsis3.1 modem. I ordered a 3.1 modem hoping it won't go obsolete so quickly, but a modem labeled "up to 10+ gbps" and 2 10/100/1000 ports on the back, it feels just as scummy as comcast's usual practices.
Wireless charging again, but with a demo - Page 1
Forum section: electronics / general

author: Berni
author_rank: Super Contributor
timestamp: May 30, 2018, 07:35:08 pm
content: This time around with IR lasers as we heard of before.Yeah its Linus Tech Tips but shows it working.Nice tech in there to track multiple targets with the beam. Up to 3W of power is not bad too. Tho considering the efficiency of solar cells that does mean that it needs a pretty beefy IR laser inside there. But i suppose if its not focused that its pretty safe to shine at something for half a second without anything more than the thing getting a bit warm.Looks pretty cool but i don't think i see this being very practical.
All the Words - Just Once - Page 1
Forum section: electronics / general

author: metrologist
author_rank: Super Contributor
timestamp: May 29, 2018, 09:37:39 pm
content: The objective is to build glossary of terms used in several publications.I started a project to collect all of the words within a publication (PDF, HTML, or Word, etc.), then alpha sort each unique word. After than, filter out common words. Up to this point it was all a manual process from PDF to text to several find/replace operations.Is there an application that already exists that can do this? My list of unique words is around 6000 and I need to figure out a way to filter out the common words. I was going to try and generate another list of words from other simple plain language texts (such as novels and other stories) and use a database query.

author: TerraHertz
author_rank: Super Contributor
timestamp: May 30, 2018, 12:32:53 am
content: Did you try googling 'word frequency count' ?It sounds like you want an existing utility to do it, without coding. And it does probably exist; just need to find examples.If not, then the next question is, which programming language to write it in. It's not a difficult problem, so any language you are familiar with will probably do.Main issues being, to use an array or tree, how to deal with margin cases - punctuation, hyphenation, abbreviations, miss-spellings, etc, when and how to sort, project state saves, etc.

author: james_s
author_rank: Super Contributor
timestamp: May 30, 2018, 12:38:00 am
content: What is the input format? If you can get all the source into a text file I could whip up a Python script in about 5 minutes to put all the unique words in a list sorted by their frequency.

author: metrologist
author_rank: Super Contributor
timestamp: May 30, 2018, 01:24:28 am
content: My algorithm is flawed since I want common terms such as "sweep" and more complex terms such as "differential noise"...The format may depend on the available solutions. I had thought of a VBA script to do all this from plain text, but my raw source is primarily PDF and many HTML pages.

author: Rerouter
author_rank: Super Contributor
timestamp: May 30, 2018, 01:38:41 am
content: Sort words by frequency, then build a filter for the rest. You might have 6000 words, but most of the firsr half will likely be nothing you need.So make your software list them, with check boxes to the side, and just run through it. Will probably be less than 20 minutes of your time. Then export that list to use for later projects

author: JohnnyMalaria
author_rank: Super Contributor
timestamp: May 30, 2018, 01:43:18 am
content: Excel's Pivot Table is pretty powerful for this kind of thing.
Electronics books in French - Page 1
Forum section: electronics / general

author: shakalnokturn
author_rank: Super Contributor
timestamp: May 29, 2018, 09:35:23 pm
content: I'm certain to have loads of success with a topic like this one.One of my favourite books on the subject when in my early teens was "Mastering Electronics" (2nd Ed.) by John Watsonhttps://www.springerprofessional.de/mastering-electronics/7057894Looking back I think I actually learnt quite a bit, and gained lot of interest in electronics from it.Now I'm looking for something similar in French for a friend's 11 year old son, but the French seem to always make simple things complicated and boring -right at the basics.Could anyone advise my on a book that possibly: Keeps things simple, teaches elementary safety rules when working with electricity, has some funny anecdotes, has some example circuits with calculations.I know such a book probably doesn't exist...

author: Alex Eisenhut
author_rank: Super Contributor
timestamp: May 29, 2018, 10:02:32 pm
content: We had French translations of the classics by Wildi, Boylestad, and Malvino when I was in college in Quebec.They are college and university level textbooks, so maybe a bit much for an 11 year old.What about Engineer Mini Notebooks?https://archive.org/details/Radio_Shack_Engineers_Mini-Notebook_-_Optoelectronic_Circuits_-_F._Mims_1986_WHe's gonna have to learn English sooner or later anyways.
CLick on the first link of any wikipedia page and you will ALWAYS get to the sam - Page 1
Forum section: electronics / general

author: Beamin
author_rank: Super Contributor
timestamp: May 20, 2018, 07:28:14 am
content: ...ame page. Why? This works for any page page just keep clicking the same first link on any page and in a few minutes you will always get back to the same topic. I won't ruin the surprise for people who haven't tried this yet.Is it something to do with languages and how they work I think this will work in any language and probably any encyclopedia. IT could also have something to do with human nature and the way it's linked to technology but I can't think of a non digital analog perhaps look up the first topic each paper encyclopedia reference's and you probably could get back to the same result.Maybe its like zippfs law or how ever you say it.

author: ataradov
author_rank: Super Contributor
timestamp: May 20, 2018, 07:42:50 am
content: That's not news. You will get to philosophy or some other BS like that. That's because when weak minded people can't explain things they default to mumbling, and that's what philosophy is all about.

author: helius
author_rank: Super Contributor
timestamp: May 20, 2018, 07:48:37 am
content: Either a majority of pages or a large fraction have a pronunciation key in the first few words, which links to the International Phonetic Alphabet, the technical language used in the keys. All those pages have the same first link, and so it is within a few steps of all pages on the site.

author: ataradov
author_rank: Super Contributor
timestamp: May 20, 2018, 07:50:30 am
content: For this trick to work you have to skip pronunciations. You have to follow links to actual articles.

author: JPortici
author_rank: Super Contributor
timestamp: May 20, 2018, 09:02:57 am
content: is it the hitler game?

author: jc101
author_rank: Frequent Contributor
timestamp: May 20, 2018, 09:58:45 am
content: There is a website that will follow the links for you and graph the results...https://xefer.com/wikipedia

author: Beamin
author_rank: Super Contributor
timestamp: June 03, 2018, 05:57:20 pm
content: Quote from: EEVblog on May 20, 2018, 09:57:44 amCool!My mind was blown too. I discovered this a few years ago when I was board at work and thought it would send me into a loop or each subject would lead to a related field but EVERY page that has more then one link will do that.I saw another video on you tube about this recently I think maybe Vsauce?
Efficient banana plug wire/cable storage? - Page 1
Forum section: electronics / general

author: ziplock9000
author_rank: Regular Contributor
timestamp: May 28, 2018, 09:53:03 pm
content: How do you efficiently store your banana plug leads/cables?Up until now I stored them in a large plastic jar, but getting to them involved pulling them all out and a little bit of untangling. My crocodile leads are all clipped to an upside down U shaped strip of plastic that is mounted on the side of my desk and that works great. I thought maybe a hook could be used for the bananas leads, with each one inserted into the last one with one of them on the hook, but that isn't going to work either.Ideas? Thanks.

author: KrudyZ
author_rank: Frequent Contributor
timestamp: May 28, 2018, 09:59:37 pm
content: I have a board with drilled holes attached to a wall.I just plug the cables into the holes and let the cables dangle.

author: ziplock9000
author_rank: Regular Contributor
timestamp: May 28, 2018, 10:00:50 pm
content: Yeah I was thinking about that, but I'm not sure I have the space. I may still do that, so thanks

author: JohnnyMalaria
author_rank: Super Contributor
timestamp: May 28, 2018, 10:27:18 pm
content: I just hammer nails into the edge of the shelf or a stud and use them as hooks. I do this for woodworking clamps etc.

author: thm_w
author_rank: Super Contributor
timestamp: May 28, 2018, 10:34:05 pm
content: https://www.amazon.com/s?keywords=cable%20clawhttps://electronics.stackexchange.com/questions/8427/how-to-store-all-those-spare-cables-and-connector-cordsYou could 3D print, laser cut, bandsaw etc. one if you want a custom size.

author: ziplock9000
author_rank: Regular Contributor
timestamp: May 29, 2018, 05:34:43 am
content: Quote from: thm_w on May 28, 2018, 10:34:05 pmThey are £75 in the UK ($100 USD) which is just ridiculous pricing even for a professional setup. Although it's given me an idea for making one from wood thoughThanks.

author: Jeroen3
author_rank: Super Contributor
timestamp: May 29, 2018, 06:04:10 am
content: Or£14, VOLTCRAFT ML-1 SW.

author: capt bullshot
author_rank: Super Contributor
timestamp: May 29, 2018, 06:31:40 am
content: Homebrew style, that's what some colleagues did here at work:I do prefer the comb style ones mentioned above (look at the left most side and use your imagination):http://wunderkis.de/mg3633a/teardown/P1150499.medium.jpghttp://wunderkis.de/mg3633a/teardown/P1150493.medium.jpg
Mitsubishi software language translation fail - Page 1
Forum section: electronics / general

author: lmester
author_rank: Regular Contributor
timestamp: May 26, 2018, 06:34:15 am
content: Here are some strange language translation fails that I've seen while using this Mitsubishi software. Some of them give me a laugh.Others give me a brain lock while I try to determine what that message actually means.Mitsubishi is a large company. I'd expect that they'd have a group of people that do nothing but translate their software and documentation to various languages.This is not a cheap consumer product. It's diagnostic and configuration software for an HVAC (Heating and cooling) system.I wonder if the english operators manual for their cars is this bad? You'd have a big problem finding the dipstick in your engine compartment if their car operators manual was translated by the same people. They'd probably call it an engine lubrication monitor rodAlso, the documentation for this system is just as bad as the software. Whenever I read it I get a bad case of PDF file brain lockWould anyone reading this like to comment on the language traslation quality of their Mitsubishi product software or documentation?

author: tpowell1830
author_rank: Frequent Contributor
timestamp: May 26, 2018, 10:08:59 am
content: These messages don't seem much worse than some of the Microsoft early error messages...Just sayin'...

author: Rerouter
author_rank: Super Contributor
timestamp: May 26, 2018, 10:18:33 am
content: Patching strings in an EXE is almost a yearly event at my work, the german version for automotive software comes out like 3 months before the english one,

author: james_s
author_rank: Super Contributor
timestamp: May 29, 2018, 04:02:26 am
content: I remember testing European localization of software, the German version was always a challenge because the strings would end up twice as long or more than the English counterparts.

author: helius
author_rank: Super Contributor
timestamp: May 29, 2018, 04:31:43 am
content: I don't have first-hand experience, but what I've read is that Japanese conglomerates have a culture that doesn't much respect foreigners. That may contribute to a paucity of native English technical writers.
Ustream stops free service - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: June 05, 2018, 10:06:34 pm
content: In other news, IBM own Ustream

author: tsman
author_rank: Frequent Contributor
timestamp: June 05, 2018, 10:14:38 pm
content: I'm more surprised that it took this long for IBM to kill it. When they acquired it, they said Ustream would be their "full-service enterprise video offering" so I figured it'd be killed off within a year. The recent rebranding to IBM Cloud Video is them finally getting around to it I guess.

author: Cyberdragon
author_rank: Super Contributor
timestamp: June 06, 2018, 05:17:16 am
content: I'd be suprised if anyone upgrades unless they really want it.

author: Towger
author_rank: Super Contributor
timestamp: June 06, 2018, 06:49:45 am
content: I am sure most people switched over to Youtube Live a year or two ago. Rewind and no adverts at the start were more than good enough reasons.
RIP Alan Bean - Page 1
Forum section: electronics / general

author: SeanB
author_rank: Super Contributor
timestamp: May 27, 2018, 05:21:24 pm
content: RIP Alan Bean, the artist I think Dave most wanted to meet.http://www.alanbean.com/Whole load of accomplishments, walked on the moon, Skylab, and is survived by just four moonwalkers: Buzz Aldrin, lunar module pilot of Apollo 11, Dave Scott, commander of Apollo 15, Charlie Duke, lunar module pilot for Apollo 16, and geologist and former U.S. Sen. Harrison Schmitt, lunar module pilot for Apollo 17, the final Apollo moon mission.https://en.wikipedia.org/wiki/Alan_Beanhttps://www.cbsnews.com/amp/news/alan-bean-astronaut-who-walked-on-the-moon-dies-at-86/

author: German_EE
author_rank: Super Contributor
timestamp: May 28, 2018, 06:10:18 pm
content: It's sad that your post hasn't attracted more comments. We really need to mark the passing of these men in some way.

author: Gyro
author_rank: Super Contributor
timestamp: May 28, 2018, 06:34:54 pm
content: It's almost unbelievable that we're rapidly heading towards 50 years (what, 46 years since Apollo 17 now?) since anyone walked on the Moon. So few of them left to tell the tale now.I would never have believed that such a period would elapse when I watched the first Moon landing as a kid.

author: tpowell1830
author_rank: Frequent Contributor
timestamp: May 28, 2018, 06:48:11 pm
content: I still remember Cernan and Schmitt singing "Strolling on the moon" on Apollo17 mission. Saw that in real time (with delay from relays, distance etc).It's a shame that we have the flat earthers and others saying it was a hoax. Such is life...
Help, my google fu is failing me - Page 1
Forum section: electronics / general

author: GeorgeOfTheJungle
author_rank: Super Contributor
timestamp: May 28, 2018, 01:51:54 pm
content: I'm looking for a good weight scale/balance with digital interface (ttl/rs232 serial preferably) to weight bottles, about 0.1..0.25 grams of resolution, up to 500g max.Any help would be greatly appreciated.

author: Brumby
author_rank: Unknown
timestamp: May 28, 2018, 03:17:58 pm
content: I would usually start off with a search term like "rs232 digital scale" on Google and on eBay. That will give you some idea of what's around and what it will cost. Hone your searches from there.As for what is good or not, I don't have that knowledge, sorry.

author: JohnnyMalaria
author_rank: Super Contributor
timestamp: May 28, 2018, 03:30:04 pm
content: Something like this:https://www.coleparmer.co.uk/i/cole-parmer-symmetry-ec-500-220v-ec-series-portable-toploading-balance-500g-x-0-1g-220v/2000052?searchterm=EW-20000-52QuoteDo not get pocket balances or "jewelry" balances. The ones in the link above look reasonable given the price. Cole-Parmer is a decent scientific supply company. I've bought a lot of their brand lab equipment and am happy with it (e.g., ultrasonicators, magnetic stirrers, glassware, filters, chemicals etc). The only thing I bought I don't like is a Ohaus brand pocket balance that's BS. I think I left a review on the website. The above is for Cole-Palmer UK and has a shitty shipping time (22 days) - the US version is in stock. Of course.For other options, I suggest searching for laboratory supply companies in Poland/EU and then go to those sites.

author: GeorgeOfTheJungle
author_rank: Super Contributor
timestamp: May 29, 2018, 08:55:57 am
content: JohnnyMalaria: that Cole-Parmer looks good enough indeed, yesss. Thank you Sir, very much.Dave Jones: This is the best nerds' forum ever.
DHL shipping and receiving - Page 1
Forum section: electronics / general

author: VEGETA
author_rank: Super Contributor
timestamp: May 26, 2018, 02:01:10 pm
content: Dear Friends,I have ordered PCBs from JLCPCB via DHL and I have put my home address (northern Jordan) but I don't reside there, I reside in south due to work and only get back home once a month.So how that makes of my shipment?Can't I have some kind of DHL post office box (not regular post office) to get my shipments in it then collect them when I get back?Or can I ask to deliver the package at their local office so I can get it any time I am free?most important thing is that I don't want the shipment to return!What about Customs? can you please give me detailed info about it since it could turn into a nightmare. Since they deliver to home, how can they know the customs? the customs always has their employee at the post office to check and assign customs value on the package.

author: rdl
author_rank: Super Contributor
timestamp: May 26, 2018, 04:21:12 pm
content: Here we have a type of service where DHL/FedEx/UPS picks up the package and takes it to a post office. The Post Office does the rest. If this is how your package was shipped it will be delivered the same as regular mail.If DHL was to make the actual delivery, then call them to make arrangements. You probably can't get the delivery address changed, but you should be able to get them to hold your package for pick up at their local terminal.

author: eyiz
author_rank: Regular Contributor
timestamp: May 26, 2018, 04:45:58 pm
content: If DHL delivers the product themselves, e.g. when using "DHL Express" service, then you can pay the Customs fees online before the item arrives, and can call DHL, while the package is en route, and have them deliver to a different address, provided that new address is within the same "tax/duty" destination Country/Province/State etc..I don't know what you do when the DHL service is the one that hands your package over to the local national postal service to complete the last leg, though. Before your package arrives in the destination Country, DHL usually knows what the Customs fees are, for most simple things that have well defined tax and duty codes. So, chances are you may be able to just call DHL and pay Customs with Credit Card over the phone, or pay online using the url,http://www.dhl.ca/MyDelivery,where you enter the DHL WAYBILL number to see what your Customs fees are.
The Secret City (interesting facts vid on the Manhattan Project) - Page 1
Forum section: electronics / general

author: Cliff Matthews
author_rank: Unknown
timestamp: May 24, 2018, 03:45:21 pm
content: Quick video from an interesting channel (kind of a blast from the past, and didn't know where else to post it) enjoy..Similar article on Oak Ridge here:https://www.theatlantic.com/photo/2012/06/the-secret-city/100326/
Alam - Jablotron F-Link software? - Page 1
Forum section: electronics / general

author: onesixright
author_rank: Frequent Contributor
timestamp: May 27, 2018, 03:59:38 pm
content: Hey All,Anybody familiar with the Jablotron Alarm system (CZ company)?I bought a house with a Jablotron JA106K. But i cant change the language. They are pretty hung-up on sending over a service technician (guy needs ro driver +100 KM) for swapping the languageCommunication, beside being slow, is also very difficult, they only answered ½ questions asked.Now, there is F-Link and J-Link software available (for USB access).The J-Link anybody I can download, but the F-link is -GUESSING HERE- only for pro-installation companies (??). The F-link is probably what you need to get into the nitty gritty, like changing the language.Anybody has a clue how this works?Thanks!
Aussie 19-year-old takes Intel prize for building drone - Page 1
Forum section: electronics / general

author: Brumby
author_rank: Unknown
timestamp: May 23, 2018, 09:02:11 am
content: You never know where a winning idea can come from:https://www.itnews.com.au/news/aussie-19-year-old-takes-intel-prize-for-building-drone-491317Looks like he might be a Sydney local, since it's reported he is enrolled at UNSW for an Engineering degree.Just a warning - he apparently used an Arduino...

author: EEVblog
author_rank: Unknown
timestamp: May 23, 2018, 09:22:27 am
content: I can totally see that replacing windows cleaners.Could maybe have been done with a crawler of some type too, has anyone ever done that?EDIT: Yep, it has:I can picture a drone based system being too loud.http://www.kiterobotics.com/http://www.ipceagle.com/products/category/highrise-automatic-window-cleaning-system#.WwUy90iWTD4

author: Howardlong
author_rank: Super Contributor
timestamp: May 23, 2018, 09:30:34 am
content: Techmoan did a video of a crawler type window cleaner herehttps://youtu.be/16P5Rqagem8

author: Ampera
author_rank: Super Contributor
timestamp: May 23, 2018, 09:37:02 am
content: Sagan's gotten a lot bigger than I remember!. Would be neat to see him there one day, but I'll stop talking about things that aren't really my business, I'm just here for that joke.I've got 3 years, time to beat him.
Two Forms of ID - Amazon Women on the Moon -  1987  - Page 1
Forum section: electronics / general

author: Homer J Simpson
author_rank: Super Contributor
timestamp: May 23, 2018, 03:30:07 am
content: 1987

author: Dubbie
author_rank: Unknown
timestamp: May 23, 2018, 03:53:44 am
content: uh, ok then...
Looking for... IEC Socket to USB power supply. - Page 1
Forum section: electronics / general

author: aargee
author_rank: Frequent Contributor
timestamp: May 19, 2018, 07:59:26 am
content: Hi all,Not sure if it's me using the wrong search termsbut I'm looking for a few IEC-to-USB power supplies - I can't seem to find any.So it will plug into an IEC receptacle on a UPS and provide 5V at around 2A via a USB connection, preferably in a 'pigtail' format.I know I can do the AC power plug to IEC socket but I'd like to have a neater all-in-one solution, does anyone know if such a product exists?It's to run a Raspberry Pi and my 3D printer from a UPS. There's lots of different solutions that aren't as 'plug and play' but I thought it weird that such a power supply seems not to exist or is rare at least.TIA

author: Halcyon
author_rank: Unknown
timestamp: May 19, 2018, 09:24:09 am
content: Can you not just get anIEC C14 to Type Ilead and plug any old USB power brick or phone charger into it? I've never seen a USB power device with a male IEC lead on the end. Not to say they don't exist, but they aren't common.

author: aargee
author_rank: Frequent Contributor
timestamp: May 19, 2018, 10:57:40 am
content: Yes, but I was looking for a single device. I'm surprised no one *seems* to be making them...Hens teeth, as rare as..

author: Fsck
author_rank: Super Contributor
timestamp: May 19, 2018, 08:17:36 pm
content: seems a bit too niche to save a 2$ cable.

author: NiHaoMike
author_rank: Super Contributor
timestamp: May 19, 2018, 08:36:59 pm
content: Try to find a large USB PSU (the kind that used to be popular to power smartphone clusters for Perk mining) that accepts an IEC input?

author: aargee
author_rank: Frequent Contributor
timestamp: May 19, 2018, 11:22:55 pm
content: Exactly - trying to find anything.

author: bitwelder
author_rank: Super Contributor
timestamp: May 21, 2018, 12:43:52 pm
content: Actually, it's indeed interesting that there are several models of USB PSU on the market that come with a modular mains attachment and have a range of plugs available for whatever local mains plug system, but there no IEC C14 attachment (I guess out all the IEC plugs, you're after the C14 type).
OLD 8-pin "TV" connector on old pro video equipment - Page 1
Forum section: electronics / general

author: agentrob95
author_rank: Newbie
timestamp: May 21, 2018, 02:43:28 am
content: Looking for some information on this, and my google-fu is failing me right nowThe old 8-pin connector, usually labeled "TV" on old professional VCRs and reel-to-reel VTRsDon't have a need, but I've seen it in a lot of review videos, and was wondering if anyone had a pinout or any information on it, just out of curiosity

author: Halcyon
author_rank: Unknown
timestamp: May 21, 2018, 03:12:56 am
content: I think they were known as an EIA-J connector.More information here:http://www.labguysworld.com/Connectors.htm

author: agentrob95
author_rank: Newbie
timestamp: May 21, 2018, 03:28:07 am
content: Ah! That's exactly what I was looking for, Thank you so much!
Dontronics closing down. Up to 98% off. - Page 1
Forum section: electronics / general

author: VK3DRB
author_rank: Super Contributor
timestamp: May 18, 2018, 06:35:12 am
content: Another trusty electronics vendor going out of business.https://www.shop-dontronics.com/He had the best USB to RS232 converters around. Most of the stuff is gone, but there are some good bits and pieces still there are bargain prices, like CAN bus converters.I have bought stuff from them over many years, and have always been delighted with their service.
EM Drive thrust due to poorly shielded cables - Page 1
Forum section: electronics / general

author: llkiwi2006
author_rank: Regular Contributor
timestamp: May 17, 2018, 10:55:52 pm
content: From theconference paper:QuoteQuoteWorking with large currents and tiny forces, but don't have proper shielding

author: David Hess
author_rank: Super Contributor
timestamp: May 18, 2018, 01:16:20 am
content: I called it when they first announced such inconsistent and puny results. Victory goes to Lorentz.

author: CopperCone
author_rank: Super Contributor
timestamp: May 18, 2018, 02:52:44 am
content: experiment needs to be repeated with greater shielding, to verify
Synhronous generators - changing excitation - Page 1
Forum section: electronics / general

author: nForce
author_rank: Frequent Contributor
timestamp: May 18, 2018, 01:45:07 pm
content: When Synhronous generator operates on the grid, why when we over excitate the generator the grid sees the generator as a capacitor? And the generator sees the grid as an inductor?Can someone explain to a beginner nice and slow.Thanks.

author: David Hess
author_rank: Super Contributor
timestamp: May 18, 2018, 02:08:55 pm
content: Start with theWikipedia article on synchronous condensers.

author: nForce
author_rank: Frequent Contributor
timestamp: May 18, 2018, 04:44:27 pm
content: Yes, I have read this, but I don't understand why is always the opposite. So the generator sees the grid as an inductor and the grid sees the generator as a capacitor. Can someone give an example?

author: David Hess
author_rank: Super Contributor
timestamp: May 18, 2018, 05:15:00 pm
content: This is not really an explanation but the synchronous condenser does not "see" anything. Somewhere on the grid is a load, usually inductive, where the current lags the voltage so during part of the power line cycle it is drawing more current and during the rest of the power line cycle it is returning current. This extra current is not doing any work and instead is just heating up the power line conductors representing an extra loss.The synchronous condenser does the same thing but it can be tuned with its excitation field strength to act with a specific value of inductance or capacitance. If it is placed close to the unfriendly load, then it can cancel out the reactance at the load so that the power lines only see a resistive load and no additional power is lost through the circulating currents. The reactive circulating currents now travel back and forth only between the load and the synchronous condenser.

author: nForce
author_rank: Frequent Contributor
timestamp: May 18, 2018, 07:10:16 pm
content: Oh, thanks. By what the grid sees (inductor or capacitor) I meant is the power factor leading or laging.I think I know, why is the power factor leading or lagging differently by the position of our measurement. (If we measure from the grid to the generator or vice versa).It's because if we plot sin(x) and cos(x) on one graph at the start cos(x) signal is the first one, but if we look at the end the cos(x) is the last. Sort of, right?

author: nForce
author_rank: Frequent Contributor
timestamp: May 19, 2018, 01:17:20 pm
content: I was thinking about this, can someone just confirm if my thinking is correct:If we overexcite the rotor winding that means increase the current which results in more magnetic flux which increases the stator voltage. So because stator voltage is higher then the voltage of the grid, because of that the stator current flows away from generator into the grid. So we are feeding the system with more VArs, and vice versa if we underexcite the rotor, we decrease the stator voltage, and the current flows into the generator, so we are sucking the VArs from the system.Do I understand correctly? Thanks.
Cheap Chinese DC circuit breaker do they work ?  - Page 1
Forum section: electronics / general

author: Miyuki
author_rank: Frequent Contributor
timestamp: May 16, 2018, 08:04:37 am
content: Hi folksI think this will be more to general chat than real technical questionWhat can I expect from somethink like this:2P 25A DC 440V Circuit breaker?Can it work ?Brand one start at prices at least10 timeshigher and goes much higher so it is huge difference in price, but how much is in quality ?

author: BravoV
author_rank: Super Contributor
timestamp: May 16, 2018, 08:10:27 am
content: When it comes to "commodity" items, money never lies, thats what my grand-dad told me.

author: Yansi
author_rank: Super Contributor
timestamp: May 16, 2018, 08:17:18 am
content: Hi Miyuki,if you buy me some, I may be able to have them tested, especially including the breaking capacity. Not sure if I would be able to do it right away, as I have little extra spare time and still need to book some time in that lab (but that should be of less problem than my time).If you are interested, please send me PM.Y.//EDIT: In this case of a safety feature such as a breaker, I would never want to cheap out on these things. The breaker may work one, two, three times, ... and then your house burns down.

author: Miyuki
author_rank: Frequent Contributor
timestamp: May 16, 2018, 08:29:42 am
content: Quote from: Yansi on May 16, 2018, 08:17:18 amIf you are able to test them it will be great I'll send you PMIn critical applications is better to have backup fuse (for example here where I live is required to have fuses before main input circuit breaker at house, they are few steps higher rating than circuit breaker but have much higher breaking capacity if something serious happen)

author: apis
author_rank: Super Contributor
timestamp: May 16, 2018, 11:45:53 am
content: Bigclive on youtube test a lot of similiar cheap items from ebay. In summary: some are great, others are complete crap (and sometimes literally death traps). Even if they are great I have found that often quality control can be lacking, so one device might work fine, but the second might blow up. If it is for something critical, especially safety related, I would go for a proper brand name one from a reputable dealer. If nothing else just to cover your ass. If it goes up in flames in the future and the insurance company (etc) finds out you have been using dodgy parts (according to them) then it doesn't matter if it was your fault or not, it will be enough reason to give you the blame.
EE related MEMEs - Page 1
Forum section: electronics / general

author: zitt
author_rank: Regular Contributor
timestamp: May 15, 2018, 09:18:01 pm
content: Saw this today on FB... had to share as it made me LOL.

author: T3sl4co1l
author_rank: Super Contributor
timestamp: May 16, 2018, 06:49:08 am
content: GATEARRAYED! IT'S FULL OF ELECTROLYTICS!! ITS WHAT COMPUTERS CRAVE!!!https://i.imgur.com/lGRtLmi.mp4Tim
Hey tech lovers, here is an interesting one - Page 1
Forum section: electronics / general

author: Rick Law
author_rank: Super Contributor
timestamp: May 12, 2018, 05:17:39 am
content: WASHINGTON (Reuters) - NASA said on Friday it will send a small helicopter to Mars as part of the U.S. space agency’s 2020 mission to place a next-generation rover on the Martian surface, marking the first time such an aircraft will be used on another world....The remote-controlled Mars Helicopter, designed to take flight in the thin Martian atmosphere with twin counter-rotating blades, weighs about four pounds, with a fuselage the size of a softball, NASA said. Its blades will spin at almost 3,000 rpm, roughly 10 times the rate employed by helicopters on Earth.“The altitude record for a helicopter flying here on Earth is about 40,000 feet. The atmosphere of Mars is only one percent that of Earth, so when our helicopter is on the Martian surface, it’s already at the Earth equivalent of 100,000 feet (30,480 meters) up,” Mimi Aung, the Mars Helicopter project manager at NASA’s Jet Propulsion Laboratory, said in a statement....For more info, here is where I quoted the above from:https://www.reuters.com/article/us-space-mars-helicopter/in-an-interplanetary-first-nasa-to-fly-a-helicopter-on-mars-idUSKBN1IC2OU
Help For Design an EEG Signal Acquisition System - Page 1
Forum section: electronics / general

author: Moturki
author_rank: Newbie
timestamp: May 11, 2018, 02:19:13 am
content: Is it possible to design an EEG Signal Acquisition System (EEG Sensor) that detect brain electricity??because I heard that it's difficult and time consumption to work on this signals, since the brain electricity is very low (micro-volt) and electronic equipments produced noise when measuring these signals.So, my question how can i design such a system that will read electicity ofbrain (Alpha&Beta waves) in good and easy way???

author: rstofer
author_rank: Super Contributor
timestamp: May 11, 2018, 02:32:36 am
content: Google is your friend! Among other replies:http://www.instructables.com/id/DIY-EEG-and-ECG-Circuit/Search string 'eeg diy kit'

author: TimNJ
author_rank: Super Contributor
timestamp: May 11, 2018, 04:19:47 am
content: I did a portable ECG for my senior design project in college. It wasn't that hard to get good quality signals. However, EEG signals areat least10x weaker and you will very quickly run into noise/signal integrity issues if you aren't careful about the design.You will most likely want to combine your analog front end with some digital signal processing (DSP). I used an adaptive FIR filter with good results. An adaptive filter allowed me to pull a much better quality signal out of the noise, compared to a fixed coefficient digital filter.You can do it, but EEG will be trickier (and possibly more expensive) to do right.
Star Trek Tricorder Replica - Page 1
Forum section: electronics / general

author: Rick Law
author_rank: Super Contributor
timestamp: May 11, 2018, 07:00:56 pm
content: Not very modern looking, a more modern version would be displaying some click bait advertisements on the LCD...

author: Cyberdragon
author_rank: Super Contributor
timestamp: May 12, 2018, 03:22:14 am
content: Quote from: Rick Law on May 11, 2018, 07:00:56 pmNo it should be retro! It should be showing cigarette ads!
Architecture House looking for hints  - Page 1
Forum section: electronics / general

author: Miyuki
author_rank: Frequent Contributor
timestamp: May 09, 2018, 11:21:55 am
content: Hi folksI know it is a electronics forum, but what about house architecture ?Is here some people interested in architecture ?I'm planning some house extensions and need discus some ideas

author: David Chamberlain
author_rank: Frequent Contributor
timestamp: May 10, 2018, 08:36:04 am
content: Yes, i am.

author: Halcyon
author_rank: Unknown
timestamp: May 10, 2018, 09:14:37 am
content: I designed my own house (complete with dedicated server room) about 2 years ago along with an architect. Best thing I've ever done. Ask away!

author: Miyuki
author_rank: Frequent Contributor
timestamp: May 10, 2018, 02:04:33 pm
content: I cannot move much with actual walls as it is old stone cottage in side of hill and also have road aroundSo I can extend just to one sideAs I want to add floor and also connect existing two floors I need to add some stair hall, do I have any better option than i have on following sketch ?I also add some photos to see local conditions, and here is really no much space to maneuver and place thinks (just good think is as south side of hill we have good place for solar)
Why is 74LS47 BCD Decoder painfully expensive? - Page 1
Forum section: electronics / general

author: Porama6400
author_rank: Regular Contributor
timestamp: May 14, 2018, 01:08:49 pm
content: Well it still lower than 1 USD / piece but for bulk purchase it still expensiveI don't understand why is 74LS47 BCD Decoder painfully expensive?It just some logic gate stick together, but why it is more expensive than regular Op-amp?

author: Gribo
author_rank: Frequent Contributor
timestamp: May 14, 2018, 01:36:25 pm
content: Low volume, ancient technology = High price.

author: TimNJ
author_rank: Super Contributor
timestamp: May 14, 2018, 01:37:32 pm
content: Probably because no one really buys them anymore, and they don't make much sense for new designs.

author: Porama6400
author_rank: Regular Contributor
timestamp: May 14, 2018, 02:08:04 pm
content: So 7-segment is dying?(I never really use it so I don't know)

author: David Hess
author_rank: Super Contributor
timestamp: May 14, 2018, 02:10:22 pm
content: $1.5 in single unit quantities does not strike me as particularly expensive; the 7447 and 74LS47 were always relatively expensive.The less expensive CMOS 4511 can be used if you do not require ripple blanking.A modern design would replace it with a microcontroller at 1/3rd the price or more likely drive 4 to 8 multiplexed digits with a single microcontroller for 1/2 the price of a 74LS47.Quote from: Porama6400 on May 14, 2018, 02:08:04 pm7-segment displays are not going anywhere. There are just less expensive and more integrated ways to drive them now.

author: Zero999
author_rank: Super Contributor
timestamp: May 14, 2018, 02:54:59 pm
content: The '4511 is for driving common cathode displays, whist the '7447 was for common anode.I agree, if this is a new design, use a microcontroller and get rid of many other pointless ICs.
AI becomes a hobo or serial killer or both! - Page 1
Forum section: electronics / general

author: Distelzombie
author_rank: Frequent Contributor
timestamp: May 10, 2018, 01:22:38 am
content: You have to write something. What is even your point? No one knows what you are on about with this. The Hobo isn't even run by AI. The third video starts at 0:00 even though you obviously just want us to see a later part of it. Come on! In other fora your thread would have already been deleted.

author: helius
author_rank: Super Contributor
timestamp: May 10, 2018, 02:02:30 am
content: If AI can do a better hobo serial killer than Rutger Hauer I'll eat my hat.
Google's next AI assistant is kicking Siri's but... - Page 1
Forum section: electronics / general

author: BrianHG
author_rank: Super Contributor
timestamp: May 09, 2018, 11:51:31 pm
content: Here you go:And

author: Halcyon
author_rank: Unknown
timestamp: May 10, 2018, 12:21:10 am
content: Damn,that'sinnovation! It's simply amazing how far voice recognition has come.
does anyone know how to test HDMI  - Page 1
Forum section: electronics / general

author: jonovid
author_rank: Super Contributor
timestamp: May 09, 2018, 10:46:46 am
content: are HDMI cable testers any good?I have a PC VGA to HDMI converter box that is not working with a gamers HDMI DVR box.this PC VGA to HDMI converter box works ok with any HDMI TV. but not with the HDMI DVR box in the video chain.I would like to record HD live video off my PC's VGA output when online. im seeking 100% hardware solution here.however the same DVR box with its HDMI video throughput works ok with the playstation.so there is something not right with the PC VGA to HDMI converter box output!no sound and no record, however this works ok with the playstation HDMI output be it games or movies.find it difficult to unlock the HDMI puzzle. if it was DRM then the playstation 4 HD video output would not work.but is does work. so what is going on inside them HDMI cables? if a HDMI link in the video chain is bad how do you find it?without a lot of audiophile bs! about buying super $$$ cables.the HDMI DVR box im useing, and the PC VGA to HDMI converter box.both work individually, but not together.

author: Rerouter
author_rank: Super Contributor
timestamp: May 09, 2018, 11:17:43 am
content: the VGA to hdmi thing would be an active converter, so there is no easy way to say exactly how they implemented it,A starting point would be, try a standard TV resolution on VGA, its possible your recorder only supports a handful of resolutions, and lower frame rates.Next question would be, are you sure your PC doesnt offer DVI or Displayport, DVI to HDMI is just a plug change for video, and an audio encoder only for both.

author: jonovid
author_rank: Super Contributor
timestamp: May 09, 2018, 11:36:01 am
content: Quote from: Rerouter on May 09, 2018, 11:17:43 amno displayport on this video cardI'll get back to you, i have used standard video resolution. I was hoping someone had hacked this type converter for online gaming. maybe cracked the HDMI protocol? two more piks

author: The Soulman
author_rank: Super Contributor
timestamp: May 09, 2018, 12:22:45 pm
content: Research "high definition content protection" (HDCP).

author: BrianHG
author_rank: Super Contributor
timestamp: May 09, 2018, 01:42:56 pm
content: The PC VGA to HDMI might be outputting a 4:4:4 RGB DVI signal on a HDMI cable. This is allowed as a backwards compatible mode and usually has better color in 24bit applications. However, the PlayStation HDMI output might be a true HDMI Component 4:4:4 or 4:2:2 YUV video signal with embedded uncompressed audio inside the video signal as well as the separate Dolby AC3/AAC channel. Your DVR might have never been tested and designed to accept the old DVI RGB format which doesn't support embedded audio in the video channel.Worse, your DVR might only record the dead on spec 25 HDTV standard video modes. Your converter might be off or optimize it's video output mode to match the VGA video mode coming in. This usually will not work with DVRs as their mpeg chipset is expecting only around 4-8 fixed video formats which time perfectly to the way it is programmed.