#qi-hardware IRC log for Saturday, 2014-04-26

nicksydneyis "power inductor" and  "Chip Common Mode Choke Coil" the same component ?04:48
nicksydneytrying to find the component for this schematic http://postimg.org/image/psdbdxcbz/95123ed2/ for L1 (Murata LQH4C6R8M04) but can't find any looks like it's a defunct component....and can see on Murata's website that they have other similar component but bit confused 04:50
nicksydneythis is the link to Murata selection guide http://www.murata.com/products/selection_guide/index.html04:50
nicksydneyit says there is inductor (http://psearch.murata.com/inductor/lineup/) and Chip common Mode Choke Coil (http://www.murata.com/products/emc/selection_guide/emc2/index.html)04:51
solrizehttp://www.ebay.com/itm/NEW-Ben-Nanonote-by-Paperback-Book-English-Free-Shipping-/380873842128?pt=US_Nonfiction_Book  wait leave off that last number06:00
larscthere is one about the milkymist as well06:57
larscthere is this company which takes wikipedia pages and prints them into a book06:58
larscand sells them at a very expensive price06:58
larscso if one person buys it they already have their money back06:58
larscand typically their are things like libraries which have to buy one book of everything06:59
larscs/their/there/ definitly to earily in the morning07:02
larscand I forgot to mention the books are only printed when they are actually ordered07:06
larscso their model is to make _lots_ of books with no content and then just wait for people to accidentally buy them07:07
nicksydneyanybody here ?12:44
larschttp://www.urbandictionary.com/define.php?term=metaquestion just saying ;)12:52
nicksydneylarsc: is "power inductor" and  "Chip Common Mode Choke Coil" the same component ?12:53
larscno idea12:53
nicksydneyok ... wait see if wpwrak or DocScrutinizer05 can help me out :) if they are available :)12:53
DocScrutinizer05"Chip Common Mode Choke Coil" is usually what you cal bifilar12:57
DocScrutinizer05it's used for e.g. audio signals12:57
DocScrutinizer05generally for filters12:57
nicksydneyDocScrutinizer05: been looking around for replacement as seems like that product is old...one thing not sure in the datasheet it outline about "Self resonant Frequency (Mhz) http://postimg.org/image/wi633v067/ ... does that normally make a huge difference if the replacement is slightly lower or higher ?13:10
DocScrutinizer05slightly doesn't make much difference13:11
DocScrutinizer05LQH4 size factor doesn't exist anymore, it seems13:17
nicksydneyi found something similar http://www.digikey.com.au/product-search/en?pv66=1787&FV=fff40003%2Cfff80013%2C4c0008%2C1140003%2Cb0800e2&k=murata&mnonly=0&newproducts=0&ColumnSort=0&page=1&quantity=0&ptm=0&fid=0&pageSize=50013:18
DocScrutinizer05yes, looks compatible13:24
DocScrutinizer05should be 100% drop in replacement, except maybe for formfactor/footprint13:28
nicksydneycool...thanks....will start drawing the schematics for the power supply13:30
DocScrutinizer05btw that schematic seems flawed re BOM for C413:33
DocScrutinizer05unless the tayo yuden part number they listed is for a whole series of capacitors, incl 1uF and 4.7uF13:34
nicksydneyit says it's for C2, C3 and C4 - Tayo Yuden EMK316BJ105KF13:36
DocScrutinizer05105 sounds like 1uF, but not like 4.7uF13:37
DocScrutinizer05schematic says C4 is 4.7uF13:37
DocScrutinizer05o/ afk13:39
nicksydneyDocScrutinizer05: that's right according to this http://www.chip1stop.com/web/USA/en/dispDetail.do?partId=TYYU-0023014&utm_medium=cpc&utm_campaign=aggregator&utm_source=octopart&utm_term=TYYU-0023014&cid=octopart_TYYU-0023014 it's also 1uF13:41
DocScrutinizer05and how's that right?13:41
nicksydneyi meant you were right it's 1uF13:42
nicksydneyneed to dig around to see if TI made a mistake for that particular schematics13:42
nicksydneyfor C413:42
DocScrutinizer054.7uF sounds good, but the type of capacitor is also right, just the value wrong. try to get EMK316BJ475KF or whatever13:50
DocScrutinizer05or place a EMK316BJ105KF and a type like C1 in parallel13:52
DocScrutinizer05would create 5.7uF which doesn't hurt13:53
DocScrutinizer05are you sure you need 10V@15mA dual-voltage?13:55
DocScrutinizer05you know you can't get more than 15mA out of that?13:56
eintopfthis mobile phone looks nice :/13:57
nicksydneyi need to download their excel calculator to calculate what value for the L1 need to use to get 19v ...the LCD datasheet is saying http://postimg.org/image/gk4wrqew5/c9701ab5/ (for 5inch)13:59
nicksydneyand also the value of R1 and R2 ..as the calculator will give you those value too13:59
DocScrutinizer05nicksydney: you need a completely different circuit for backlight. You need current regulation o.O14:01
DocScrutinizer05NOT voltage regulation14:01
DocScrutinizer0519V is only a sidenote value14:02
DocScrutinizer0540mA is the relevant thing14:02
DocScrutinizer05unless datasheet says different (I don't like those datasheet "pictures")14:03
nicksydneyreading TPS61040 datasheet it says it's "a high frequency boost converter dedicated for small to medium LCD bias supply and while LED backlight supplies" 14:04
nicksydneyand the features the datasheet writes" Adjustable Output Voltage Range up to 28 V converter dedicated for small to medium LCD bias14:06
nicksydney" 400-mA (TPS61040) and 250-mA (TPS61041) Internal Switch Current14:06
DocScrutinizer05do you even understand what's LCD bias?14:09
nicksydneymy understanding is minimum technically but what i know is the TFT requires - and + voltage ... not completely in tune with the technical of LCD bias14:13
whitequarkTIL: Moscow doesn't have a centralized system to control traffic lights19:16
whitequarkthey just... kinda do their own thing, (almost) every single one in isolation19:17
larscmakes them resistent against hacker attacks19:30
whitequarkI believe there was a recent incident when someone hacked the information panels and put hardcore porn onto them19:32
wpwrakso that was the first time anyone actually paid attention to them ? :)19:46
whitequarkdespite the URL it's pretty great20:50
wpwrakenhanced dating techniques :)21:13
wpwrak_hmm, the gods of nouveau crashes seem to be against me running the demo of kerbal space program :-(21:28
whitequarkwpwrak_: nouveau isn't good for 3D.21:33
whitequarkbesides, even proprietary nvidia driver (and it *is* good) can hardly bear the load on my system21:33
aazzddggI'm having problems with gnome3(shell) and nvida m700021:40
aazzddggI've decided that instead of swaring using the tipicla words I'm going to swar using names of comapnys I don't like, so  imagine.... NViDIA!! arrr microshoft, Appp-A-L-E, monshanto, etc21:41
aazzddggjust my fun21:42
aazzddggimagine them being shouted with anger...21:43
aazzddggswearing  21:44
aazzddggsorry I press enter when I meant to spell correct21:45
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