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Solid States Devices => Joule Thief => Topic started by: hartiberlin on May 18, 2014, 03:23:38 PM
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Wow, how long this simple setup runs on a 1000 uF cap with this bright light:
https://www.youtube.com/watch?v=frLw8lA6lxM (https://www.youtube.com/watch?v=frLw8lA6lxM)
if you charge up a 1000 uF cap to 6 Volts it has just got only 18 MilliWattsseconds
of energy and the 9 LEDs are as bright as probably using 10 mA DC current,
so with about 2.5 Volts Threshold Voltage these 9 LEDs should use about 225 MilliWatts...
So the LEDs should go out already in less than 1 second, but here on the video it runs still
7 minutes and the inventor claims longest run time was almost an hour...
WOW !
Regards, Stefan.
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It is a nice build. LED brightness especially on camera can be very deceptive. When he gets around to measurements we will be able to tell how efficient the circuit is.
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plenty of room for a button cell
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Guy's-please wait for the next video before rushing in. This device was ment to show how easly people believe what they see,and i had to make it as real as possible. My intention was to show every one how all these so called OU devices can be simulated with very few part's.I have emailed and spoken to a few people about what i was doing before the video was even made.This one was to simulate what the Akula device apparently showed-and nothing more. I did reply to Stefan's message,and clearly stated that the device was NOT OU. Suprisingly enough,Stefan was the only one to question and calculate what the cap could actually output,and it was no where near enough to do what the device showed it was doing.
The device dose opperate as shown,and has a very neat square wave. But it is opperating on about 2.4 volt's and below.
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A timely post TinMan, avoiding yet another long thread getting nowhere towards self-running. This may be an opportune time for a fun new thread to practically show different methods of faking using a minimum of components. The entry judged to be the most innovative, receives the Akula challenge trophy. ;D
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Tinman should change his name to the DECEIVER
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Hi Hoppy.
Yes,this was to simulate the Akula device-as you know,along with many other's.A lot of people wont like the way i went about it,but i had to make it as real as possible-but i will always let everyone know that it was a mockup-a fake. I told many people before i made the video,what my intentions where,and as you can see by the comment's that were on my first video,people truely do believe what they see on youtube-and i was one of them.
But now when one of these so called OU device's come's along,i will simulate that device,and post a video-just as i did with this one here. The first Akula device,the small one with the LED's running brightly off a small cap for a very long time,is what i wanted to simulate here.Like i said in both videos-if i say it's not OU,then it's not.For that device i showed,to power those LED's like that of that small cap-then it would have had to have been way OU-and i said it wasnt. Like i said,i emailed some people befor the first video,and told them what i was up to. I also emailed Lasersaber,along with many others,after the first video,and told them what it was about. And as you know,i told the crew on OUR yesyerday what was going on.My intention was never to decieve,but to show how easly and realistic a video on an OU device can look. For those not on these two forum's,they will find out what it was all about in the next video.
The first two video's have been removed,so as this dosnt go any further than it has,and no more time is wasted on this device.
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Beware TinMan! Some have been so bewitched by the self-running fairy that they will not believe you even if you pre-announce your fake. You will still get worshiped by a few like Akula has been and requested to specify the components used, turns on the coils, core details and whether you think there is any NMR going on. :(
Deception is running with the devil, no matter how well intentioned.
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@ Stefan
For some reason there is no reply button with your question's on the last video-and only your questions and comments ???. So to answer-the cap is only 5f 2.7 volt's,and gives a run time of around 3 hour's of decent light. It take's 2 second's to charge that cap to 2.7 volt's,with that little 6 volt battery pack show in the video. So it would make a great little quick charge torch or reading light-but thats about it.
In regards to the hidden wire's in akula's bigger device-that go down through what he call's the ground pipe-a group in another forum discovered this when looking at frame shot's from the video. Are you saying your friend that has touched this pipe,say's there is no hidden wire's running down through the pipe-that power the device?
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And of course, two weeks ago I hooked up a supercap of 10F, 2.7 volts, to my original build of the complete 34063 + inverter "3V Flashlight" circuit as posted in that thread, and showed that it will run, producing light in the LEDs and the "correct waveforms" of burst oscillations and sinus, for long enough to be convincing-- or at least as convincing as Akula's demonstration of the same thing.
http://www.youtube.com/watch?v=vn8kadM61jw (http://www.youtube.com/watch?v=vn8kadM61jw)
@tinman: notice that my supercap has a full cross X on the top....... ;)
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And of course, two weeks ago I hooked up a supercap of 10F, 2.7 volts, to my original build of the complete 34063 + inverter "3V Flashlight" circuit as posted in that thread, and showed that it will run, producing light in the LEDs and the "correct waveforms" of burst oscillations and sinus, for long enough to be convincing-- or at least as convincing as Akula's demonstration of the same thing.
http://www.youtube.com/watch?v=vn8kadM61jw (http://www.youtube.com/watch?v=vn8kadM61jw)
@tinman: notice that my supercap has a full cross X on the top....... ;)
The wave form i showed was as it is. Here is a scope shot with the blue trace as a current trace added,using a 1.5 ohm resistor between collector and LED. Did you place the full cross on the cap TK ,or is that how it came? All my SC's have a y,and all uf cap's have an x.
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When looking at noisy current senses, one tip that can clean a lot of that up is to turn on averaging. You should find it in the Aquire / Aquisition menu of your scope. For things that have a lot of noise like that current waveform 64 or more averages can really make a difference.
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The wave form i showed was as it is. Here is a scope shot with the blue trace as a current trace added,using a 1.5 ohm resistor between collector and LED.
Yes, that's a JT-type waveform. Akula did his light trick with a more complicated circuit, though, which, as I showed, does work fine with the charged supercap and continues to make the waveform nicely for a while. A higher voltage SC and initial charge would make the chip version run much longer.
Did you place the full cross on the cap TK ,or is that how it came? All my SC's have a y,and all uf cap's have an x.
Nope, they came that way from EBay. I also have normal electrolytics with the "Y" and even some with a "T" pattern.
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All my SC's have a y,and all uf cap's have an x.
I too have many ordinary electrolytics with a full X and a SC with no marking, just a plain flat top.
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Ahhh Guys you do know what those Y and X on the top don't you?
In case you are unsure they are put there in case the cap overheats it reduces the chance of a powerful explosion. Wether they have a Y or X or ~ is entirely up to the manufacturer. they do not in any way signify what type of cap it is.
I thought I'd add this in case there was some confusion.
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Ahhh Guys you do know what those Y and X on the top don't you?
In case you are unsure they are put there in case the cap overheats it reduces the chance of a powerful explosion. Wether they have a Y or X or ~ is entirely up to the manufacturer. they do not in any way signify what type of cap it is.
I thought I'd add this in case there was some confusion.
There is no confusion on my part. I've blown up enough electrolytic caps to understand what those score-marks are for. They are there so that the case ruptures on the top and the guts come flying out vertically, rather than blowing up sideways and destroying other components too. When you do it right, the whole coiled up electrode strip unrolls like a party favor and you get a nice streamer up to the ceiling. Just don't be looking down at the cap when it pops!
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I know you know TK. but having blown up a few makes me worry about your electronic design ability. The idea is not to blow them up. ;)
I will confess to having inserted an electrolytic backwards but if I recall it was a fizzer :(
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I will confess to having inserted an electrolytic backwards but if I recall it was a fizzer :(
Not enough voltage quickly enough Chris. ;)
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See my analysis, sims, builds and comments of such circuits here: http://www.overunityresearch.com/index.php?topic=2436.msg38725#msg38725 (http://www.overunityresearch.com/index.php?topic=2436.msg38725#msg38725)
and here: http://www.overunity.com/14591/lasersaber-strikes-again-a-joule-thief-king/msg402952/#msg402952 (http://www.overunity.com/14591/lasersaber-strikes-again-a-joule-thief-king/msg402952/#msg402952)
Stefan's analysis at the beginning of this thread does not consider that you can run much less current in pulse mode, low duty cycle high peak current and get good brightness. He uses the steady state DC value to compare with pulse mode values for run time.