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2:07 PM
@Sathya anything and everything.
@AnindoGhosh Making it.
 
@Kortuk gimme a sec, need my laptop
 
I get the feeling I misread this question somehow... since I'm the only one who suggested a zener shunt.
1
Q: Voltage supply clipping to <=3.3V

PaulSo, I have this circuit which needs <50mA and can be supplied with a voltage between 2V and 3.3V. I want to supply it with a Li-Ion cell, which has 2.7-4.2V. I don't really want/need the complexity of a buck/boost converter. I know I could just regulate it down to anything below 2.5V, but it sti...

 
@Sathya Ha. I need a moment also
I just got back to OKC.
 
Is anyone else joining the hangout? I see two IDs without video, and me.
 
user61389
@AnindoGhosh I'm one, but I'm having trouble with my camera
 
2:14 PM
@AnindoGhosh I dont have video, as per previous discussion. I am trying to deal with flags since I have been off mostly for a few days.
 
@CamilStaps Do you have audio, or not that either?
 
user61389
@AnindoGhosh nope, not yet. On my new laptop I have, but I first have to setup the internet blah, blah, blah
 
Just about to join, not sure how audio will go just about to try it.
 
Hey @jippie aren't you joining the hangout?
And did anyone figure out why the Zener answer I posted isn't correct?
 
56
A: How are integrated circuits fabricated?

Olin LathropNo big deal really. First you get a pile of silicon. A bucket of ordinary beach sand contains a lifetime supply if you're going to make your own chips. There is lots of silicon on this planet, but it's mostly all so annoyingly bound up with oxygen. You have to break those bonds, discard the n...

 
2:25 PM
Peter, perhaps you need to turn down your speakers for the feedback not to occur?
@Kortuk What about it?
 
@AnindoGhosh So many upvotes!
 
Damn I will not be able to join hangout..
We have visitors..
 
@Kortuk Yeah, @Angela and I were discussing it, and @AshRj too. The public has spoken with its votes: Begone! All you boring, technical answers! Begone! We need frippery!
@CamilStaps What happened to your video?
 
@AnindoGhosh Yes, this is a standard thing, the less technical the easier the votes, it is considered one of the negatives to the SE system, but since reputation is mostly a made up number, it happens.
 
What is this "hangout" ? :P
 
user61389
2:34 PM
@AmithKK messing with cameras and stuff
 
You guys are doing a G+ hangout?
Cool!
 
user61389
@AmithKK see the link at the starred messages
 
Cool :P
I'll just spectate ;)
 
@AmithKK click the link, google plus video chat
 
Fresh install of ubuntu here :P
Installing the plugin
 
2:37 PM
@Kortuk Now THAT was interesting
@Kortuk Yes, that's what I found interesting.
 
@CamilStaps lol
Bye guys!
 
user61389
@abdullahkahraman bye!
 
Is that "someone" in the hangout?
 
@abdullahkahraman Yes
 
@AnindoGhosh I cannot hear nor see anything
 
user61389
2:49 PM
@abdullahkahraman lol, I can't see / hear you either
 
@abdullahkahraman Why not?
 
@AnindoGhosh Now I can
@AnindoGhosh You rock, as always, lol
@CamilStaps Hey!
Who is Peter Johnson?
@AnindoGhosh Nice glasses..
 
user61389
@abdullahkahraman who do you think? :P
 
@abdullahkahraman PeterJ
 
user61389
Yes it's confusing, he doesn't look like his gravatar at all.
 
2:52 PM
@AnindoGhosh Oh, what the hell is "someone" talking about?
 
@abdullahkahraman Ahh, I'm an old guy, I need my glasses to see the tiny icon thingies on the tablet -)
 
@AnindoGhosh lol.. They look good on you.
 
@abdullahkahraman Himself.
@abdullahkahraman Thank you :-)
 
@AnindoGhosh This is hilarious
Why you guys cannot laugh?
lol
 
user61389
@abdullahkahraman tell us a joke
 
2:53 PM
@abdullahkahraman I certainly am. I laugh easily, and I laugh a lot.
 
XD XD
That was nice .
 
Oh man, this is hilarious.. He is still talking
 
user61389
@abdullahkahraman you know you can block him, right?
 
Camil Staps blocked Anthony Stewart.
 
I blocked him and moved on with life.
 
2:54 PM
@Kortuk @CamilStaps Why? It is hilarious
 
It's cool but sorta boring :)
 
@abdullahkahraman I have better things to do then hear one of his answers read aloud.
2
 
@Kortuk am I missing out on some history?
 
@Kortuk Haahahah! He is reading his answers?
 
@Sathya Yep :P
The cat's still looking for a home :P
 
2:55 PM
@Sathya Yes.
 
"Some of the participants blocked Anthony. Do you want to?" Hell, no!
 
ah, plot thickens
 
@AnindoGhosh Eeew, you sound like an alien!
 
Yeah :P
How old are all of you?
 
2:56 PM
I keep seeing anindo laugh.
 
32+?
 
I am <32
 
user61389
@AmithKK 32/2?
 
That's because I speak binary. See that starred message from the other day?
 
Aaah, too bad I have to go :(
 
2:56 PM
cool @CamilStaps!
 
user61389
@AmithKK you're even younger, aren't you? 14, not?
 
Yeah
 
user61389
Awesome
 
@AmithKK 28
 
Hangouts chew up ALOT of bandwidth
 
user61389
2:57 PM
@abdullahkahraman bye again ;)
 
<--- 42
 
on full mode
 
@CamilStaps Bye
<--- Gonna be 23 in about a month.
 
@AmithKK Yes, Yes they do.
I turned 27 ~ 2 weeks ago.
 
I have only like 15GB :P
so yeah. That's why I left
I'm adding all you guys :P
 
user61389
2:58 PM
@AmithKK oh I don't really use G+, so I won't respond ;)
 
@Kortuk can you hear me at all?
 
@Kortuk sounds like a typical American :P
 
Anyone want to adopt a kitten near Bangalore(RT Nagar or something) ? DM me if you do.
:P
 
@Sathya Oh, not at all, he's Indian. Ask him :-D
 
cat fixing guy :P
 
3:00 PM
@AnindoGhosh haha
 
@AnindoGhosh Yeah
All of us sound like raj from TBBT lol :P
(indians)
 
@AmithKK hahah
@AmithKK broadcast, eh
 
@AmithKK I like Raj.
 
@Kortuk Yeah
Did you see the Season 5 Finale?
 
@AnindoGhosh did I miss the hang out?
 
3:07 PM
@jippie No, join now. We're all on. 5 people
 
@AnindoGhosh Is tony in the hangout too?
 
@jippie Was
 
I missed the good part already :(
 
@jippie Nahh, he didn't let anyone else get a word in edgeways
 
so is the video online today?
 
3:11 PM
@jippie No
 
i really missed the good part :(
/me needs to be out for a little more
 
Actually, don't enable HOA
That means under-18 year olds can't join
 
@AmithKK I am behind on the show.
 
Oh lord
Curiosity replied to my tweet
You mean a pussy ? "@SonicfanForlife: Anyone want to adopt a kitten near Bangalore(RT Nagar or something) ? DM me if you do."
 
The pitchforks are out this "morning":
3
Q: Voltage supply clipping to <=3.3V

PaulSo, I have this circuit which needs <50mA and can be supplied with a voltage between 2V and 3.3V. I want to supply it with a Li-Ion cell, which has 2.7-4.2V. I don't really want/need the complexity of a buck/boost converter. I know I could just regulate it down to anything below 2.5V, but it sti...

 
user61389
3:21 PM
@AmithKK lol
 
3 answers, all by regular contributors, all with negative votes.
 
Yo yo yo!
@ThePhoton Strange...
 
@ThePhoton Yup, I wrote that off to the weather. Today's one of those days when my overall rep is firmly in the negative.
 
@AnindoGhosh I think it's a question for David K, I think he was working on a truly-zero-dropout regulator or something a few months ago.
 
@ThePhoton Oh, that would be neat, if it came into mass production.
 
3:31 PM
@AnindoGhosh I forget the details...probably involved some kind of boost for the pass-transistor gate voltage or something.
 
@ThePhoton What kind of efficiency are we discussing here? Because, if it's not very high, then a buck-boost / SEPIC would be preferable, right?
 
@AnindoGhosh could be, but op specifically said, "I don't really want/need the complexity of a buck/boost converter."
So it's probably a good way to get another -1
 
@ThePhoton I'm ignoring the OP's needs for my own :-)
 
So where's the recording of the hangout, I kinda want to see what went down (in a "oooh, bad wreck" kind of way).
 
Incidentally, OP's need might be met by a zener triggering a FET shunt, I'm thinking. Basically like the SCR crowbars, except the SCR does not un-trigger without current dropping below a hold current. It's just that I don't have the bandwidth to think about it right now.
@ThePhoton Wasn't so bad. We spent some time figuring out various microphone and video issues, then we had an uninvited guest, then said guest spoke for a while, and then he left, and then after a bit we left.
 
3:43 PM
GrEEtz, @rawbrawb
 
@ThePhoton scares the crap out of me when an tab in my browser causes my machine to chirp at me! Greetings ...
What's up?
 
@rawbrawb turn down your speakers (or plug in headphones but don't wear them)
 
@ThePhoton or don't have a chat tab open unawares
@AnindoGhosh you guys had a hangout and TS showed up?
 
@rawbrawb I want to see the video. Also I want to know if Anindo's accent is really as strong as he says it is.
 
@rawbrawb Yup
@ThePhoton I would have made the perfect role model for Rajesh Kuthrapalli's accent in TBBT.
 
3:53 PM
@AnindoGhosh what is Raj's accent? it seems to be a bit of an amalgam, but I may be wrong.
 
Good morning
 
@AnindoGhosh Reference is over my head
 
@AnindoGhosh Looks like your comment got a little classier by being deleted.
 
@rawbrawb Mixed "Desi", a bit of Punjabi accent, plus Delhi, plus South Indian. I try and stick to that mix as well ;-)
@ThePhoton The Big Bang Theory.
 
@AnindoGhosh THat's what i thought, but I've only heard about 6 Indian accents so I couldn't be sure.
 
3:55 PM
@angelatlarge Yeah, I just decided that if anyone else wants to bother with that genius they can, and if people assume a Tantalum cap is not electrolytic, on their own head be it.
 
did I miss hangout?
 
@jippie Ja
 
@AnindoGhosh Good call
 
:(
 
@rawbrawb I no longer believe you really work in the semiconductor industry.
 
3:57 PM
@ThePhoton LOL - I forgot to add the east asian languages did I?
@ThePhoton did you ever work in the south bay, near AMD's HQ?
 
@rawbrawb Where's AMD? I'm near Lattice.
 
@ThePhoton central expressway, near where the original Fry's was/is
@ThePhoton central and Lawrence
 
Russel peters
 
@rawbrawb Yep. He does a pretty good accent.
 
4:01 PM
@rawbrawb I used to be at Lawrence & Stevens Creek...not too far from their...used to go near National Semi (I think that's pretty close to AMD) for lunch sometimes.
 
there was an Indian buffet that everyone went to, on one of the loop roads on/off central. Sneha . Don't know why people like buffets...
 
@rawbrawb Some times I go to St. John's for hamburgers --- really near there. There's also a place called iChaat Cafe that I go to once in a while.
@rawbrawb So you can eat yourself sick and sleep through the afternoon.
 
@ThePhoton I used to have my own lab so ...
 
@rawbrawb Not entirely my own, but my lab needs an actual key to get in "for laser safety"...
 
@ThePhoton all need now is a flashing light for when the "high power" lasers are fired up! and always after lunch.
 
4:12 PM
@rawbrawb We do have a safety light. I'll have to see about getting a flasher and a siren installed.
 
we used to have these bad meetings after lunch and there is one guy who just couldn't keep it together and would always nod off. Talented guy but the CEO just didn't understand how boring he was and that he should not have called meetings right after lunch. "Larry" got a job at Intel just in time.
well I gotta go and get stuff done. Ciao have a good weekend.
 
@ThePhoton I think that we need more detail on the LDO answer.
russell made a comment as an answer.
and Anindo has an answer people dont like for some reason.
 
@Kortuk Not that they're great answers. But it's pretty rare to see so many negatives.
 
@ThePhoton ohh, I agree.
 
4:27 PM
@ThePhoton That's weird
 
@ThePhoton My reading is: Petulant young person asks question. Gets upset at lack of instant, perfect answer that meets every specified and imagined requirement said OP has. Downvotes them all. Others follow suit. That last part is standard - many people will downvote an already downvoted answer.
 
user61389
"Petulant young person" - you talking about me? :) hello again all!
 
@CamilStaps Nope, the person who wanted a 3.3 Volt clipping circuit with minimal power wasted when under 3.3 Volts.
 
user61389
@AnindoGhosh ah, yeah :/
 
@CamilStaps For some reason, I get this feeling we're all missing some very obvious solution - Back-of-mind tickling about some standard textbook technique that does this.
 
user61389
4:34 PM
Perhaps he's testing us :o
 
Yo yo yo!
 
@CamilStaps Besides, you're generally not petulant, just a young person. :-)
 
user61389
@AnindoGhosh thanks :)
 
user61389
@AnindoGhosh what happened to your zener answer?
 
@CamilStaps I decided I didn't want a full -10 rep today.
 
user61389
4:37 PM
Fair enough
 
@AnindoGhosh Out of curiosity (dumb question), on your zener answer, could you move the resistor to be just next to the zener, not in the path of all current? What would be the problem with that?
 
user61389
@angelatlarge in series with the zener? Then V_out would be connected directly to V_in, thus the output voltage would equal the input voltage
 
@CamilStaps Yes, but the zener would shunt the voltage in excess of its breakdown voltage to gnd, would it not?
@CamilStaps To be pedantic, the R is already in series with zener. I am suggesting that R could be in series with zener but not in series with the output.
 
@angelatlarge No, because then there's going to be two issues: 1. Nothing to actually drop voltage from supply other than supply internal resistance and 2. If the resistor and zener are in series hanging off the supply rail, the voltage won't drop anyway, since the voltage above the zener value will simply dissipate across the resistor.
 
user61389
@angelatlarge ehh, there would be a 3.3V voltage drop over the zener and a V_in-3.3V drop over the resistor, or am I misunderstanding what you mean?
 
4:48 PM
@CamilStaps That's right
 
user61389
@angelatlarge you mean at the zener's cathode? If it's at the zener's anode, it's still in series with V_out ;) I think we understand each other
 
@AnindoGhosh Right, true, I am an idiot. Thanks for playing @angelatlarge
 
@angelatlarge No, you just got momentarily confused, as I have been since that question came up... I am darn sure there was some simple "trick circuit" we learnt about in college, that met that requirement.
 
@AnindoGhosh You are too kind, sir.
 
@angelatlarge Just realistic.
 
4:51 PM
@AnindoGhosh You are too kind, sir.
 
@angelatlarge Is there an echo in here?
 
user61389
Perhaps it's Peter's mic
 
5:14 PM
hi
everyone
 
user61389
@EnesKuray hello
 
@CamilStaps how are yoıu
 
user61389
@EnesKuray good, you?
 
good.
i have a old samsung phone java-based
@CamilStaps i want change it to a hidden camera
gt s5510
but when i close lid , record stops
 
user61389
@EnesKuray hmm, can you find out how it detects if the lid is open?
 
5:20 PM
there isnt any pin or button to detect , i think it does with magnet
i will try it with another magnet
 
user61389
@EnesKuray good idea
 
negative. it didnt work
@CamilStaps
 
user61389
Did you check both sides?
 
yes , and i put magnet ir beetween two part
 
@EnesKuray Why don't you just open the phone up to see exactly what is in the works?
 
user61389
5:26 PM
That was my next suggestion :)
 
@coding_corgi and @CamilStaps , i havent any set to it
 
@EnesKuray set any what?
@EnesKuray Beat you to it! ;)
 
user61389
@EnesKuray you mean no tools?
 
im sorry , yes
 
user61389
Do you have a hammer?
 
5:28 PM
because im turkish and i am using dictionary
yes but , wont i screen to set it up ?
 
user61389
That's no problem, but if you can't open the device it's going to be a tough job, unless of course you can modify the firmware?
 
@EnesKuray Do you see any screws or is it sealed?
 
user61389
Please don't use a hammer. It's not the appropriate tool for this :)
 
@CamilStaps No, no! Don't listen to him, it works with everything! ;)
But yeah, don't use a hammer!
 
i think i should find another phone
 
5:31 PM
@EnesKuray Do you see any screws or is it sealed?
 
user61389
@EnesKuray I think most phones will stop recording when you close the lid
 
@coding_corgi yes , i wish i have tools to open it
 
@CamilStaps Some don't, but yeah, be persistent with this phone
 
user61389
@EnesKuray Use tab, not enter ;)
 
@EnesKuray you could use a knife, but be careful
Go at your on risk...
 
5:32 PM
@CamilStaps thanks for it
@CamilStaps i tihnk it about legal stuff
 
user61389
Put it in the oven for a few hours and see if you can tear the plastic off after that.
 
user61389
@EnesKuray what legal stuff?
 
user61389
The oven isn't an appropriate tool either, by the way.
 
law ?
 
@CamilStaps Could you tell us how the phone is shut, that way we can explain how you may open it?
 
user61389
5:35 PM
@EnesKuray yes, I understand you, what's up with the law?
 
i saw a message in my android , when i tried shut camera sound , "This may not be legal"
i think it is similar
 
@EnesKuray Well check the laws where you are and get back to us..
 
i sure there isnt any law about it
@coding_corgi
 
user61389
@EnesKuray then it's legal :)
 
@CamilStapsThen let's start! Could you tell us how the phone is shut, that way we can explain how you may open it? Are there screws, is it sealed? What is preventing you to open it
 
user61389
5:39 PM
@coding_corgi hey it isn't my phone, lol
 
@CamilStaps @coding_corgi it is samsung s5510
and i dont know what i will type in google to find it
 
@CamilStaps oops, wrong person!
 
can you find anything about it on google ?
 
@EnesKuray Okay, looking at some pics of the phone, pull the battery out what do you see
 
sd card , sim card and a sticker
there is a metal .
 
5:46 PM
Ok
How is the phone shut? Screws, sealed by plastic?
 
user61389
Okay, I found the disassembly manual, wait a moment
 
@CamilStaps Smart...
 
user61389
 
Very fast, FTP?
 
user61389
@coding_corgi you're viewing them with HTTP, I'm using FTP to upload them
 
user61389
5:50 PM
High speeds only for me :)
 
you download and upload and shared it
 
@CamilStaps Hee hee hee hee!
 
you are king of speed
@CamilStaps
 
user61389
:P
 
Great job @CamilStaps, I think that will help @EnesKuray
 
user61389
5:53 PM
I don't know if sharing these files is legal, so could you please download them to your computer so that I can remove them asap?
 
it is so hard to open it :) and i downloaded thanks
every byte is important
 
user61389
Did you download it all?
 
dont waste you bytes :)
yes i did
 
user61389
Okay, thanks
 
i thanks
i should find another phone
 
5:58 PM
@EnesKuray Don't stop until you absolutely failed with that phone, then find another phone
 
user61389
Agreed, why would you stop with this one?
 
Laziness is your enemy my friend, laziness is your enemy...
 
yes you are right @coding_corgi but i havent ant talent and information to do it
i am only high school student
 
@EnesKuray Still don't let that stop you! Keep going!
 
@CamilStaps new phone is gt-c3053
 
6:00 PM
@EnesKuray I am younger than you!
 
@coding_corgi in turkey , only lesson and lesson , there is no talent education
 
user61389
This phone isn't particularly hard to open, so you'll most likely have problems with other phones as well. I urge you to keep trying with this phone! Do you have any screwdrivers?
 
user61389
I'm a high school student as well, don't let that discourage you!
 
@CamilStaps i dont need open this phone , only programming maybe
 
user61389
@EnesKuray okay, do you have the firmware?
 
6:05 PM
stock one
 
user61389
@EnesKuray what do you mean?
 
firmware which comes from factory
 
user61389
@EnesKuray yes but do you have the software? Otherwise it'll be hard to program it.
 
user61389
Or can you write apps for that phone? I'm not familiar with the device.
 
i can do a basic recorder for it
basic lang java
 
user61389
6:10 PM
Oh, okay
 
user61389
So eh, what's your question again, actually? :P
 
where is that phone's charger ?
i cant find it
LOL
i gove up i will buy a hidden camera
@CamilStaps
 
user61389
Okay, your call
 
i hate my house . there are billion tools but none of them for phone
 
@EnesKuray Jawa!
 
6:18 PM
@coding_corgi but i havent charger to open it
 
user61389
 
user61389
Do you mean such a device?
 
no , cable which beetween wall and phone
 
user61389
Why do you need that to open your phone?
 
@CamilStaps I think we need @abdullahkahraman here as interpreter :-)
 
6:20 PM
@EnesKuray That doesn't matter, just rip the camera out, make your own device, you'll get grat parts out a it, an LCD screen, button pad, etc.
 
i am asking how ?
because i dont know
 
Are you saying: "how can i take the parts out"
?
 
no , how can i make my own device :)
 
user61389
Sorry, I was having a hard time beating the computer at chess. Where do you want to get the parts from? From your phone? Or do you want to buy new parts?
 
user61389
Also, you want a 'hidden camera' - does this device have to transmit the video signal to somewhere or just store it on some disk?
 
6:26 PM
second one
 
user61389
What do you mean?
 
i want a 'hidden camera' - does this device have to transmit the video signal to somewhere or just store it on some disk
 
user61389
Do you want to store the video?
 
@EnesKuray You can do that, get the camera out, use the micro sd card from the phone and write second by second to it, and using JAWA!!! make a program that will put all the pictures into a video
 
user61389
@coding_corgi say one more time Jawa and I'll shut your mouth using Jawa! :P
 
6:29 PM
@CamilStaps JAWA!!!! GIMME TEH BEANS!
:)
 
Oooh... another candidate for tag!
0
Q: algorithm required for audio and video seperation

wolverine007can anyone give me an algorithm to separate audio and video from a source file having both audio and video part. I want to implement it using DSP blocks. Also any kind of help on this topic is more than welcome.

Actually, this one is not so bad. Just not very good for [ee.se]
 
@angelatlarge Can't wait for an answer
...
 
@CamilStaps Cue hard time on link badness...
@CamilStaps in 3... 2... 1...
 
user61389
@angelatlarge I flagged for if it could be migrated to Signal Processing, but the question needs some improvement. For example, what format is he using?
 
@CamilStaps I agree. This is a question tailor-made for DSP. Not knowing anything about DSP (except a tiny bit about computer vision I've been able to learn today) I wouldn't know whether there is a standard answer or not, regardless of format. You know, like sorting?
 
user61389
6:40 PM
@angelatlarge I have no idea
 
6:55 PM
@CamilStaps Yes, he/she should be a little more specific...
 
@CamilStaps "Any format" --- he said so in comments.
 
@CamilStaps Have you worked with networking + AVR before, I would like to ask you a quick question...
 

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