Joule Thief

[gyulasun]

Hi . Thanks for the calculations . I don't know how they fit in on a circuit i made . For Instance  take an White 10,000 mcd led that supposed to take 2.9 volts and 20 ma to light it . well i can light 4 of them on .90 volts at .81 ma total  bright . So we are Lighting Basically a 10,000 mcd led with a Modded  Jt for only 0.20 ma rather than 20 ma  and the voltage output  is barley 2 volts rectified measurement . yep its all in this thread somewhere  . The Bemf on these are Playing a factor not in any calculation i suspect . If there is an explanation Its probably more In the Nature of a Higher Bemf or energy from the aether than the actual induced voltage . Again this is in a resonate Mod and the Schematics are posted many times  so i won't bother to post them again. But thanks for a Scientific Approach ! 

Hi gadgetmall,

I included the calculation as mere example for the induction formula, did not mean to refer to any circuits here (though the numbers are not unrealistic at all for a beefy joule thief). 
Regarding your data, a 10,000 mcd white LED normally consumes indeed 20mA forward current @3.2V forward voltage to light as "superbright" LED  @10,000 mcd and within specified viewing angle (ranging 10-25 degree).

So my question is: what you wish to say with your "total bright" description: is the brightness of the 4 LEDs (with the .9V @ .81mA input from battery) is about 1:1 comparable with the brightness of the same LEDs driven by a DC power supply at 3.2V @ 20mA each) and watched from the same viewing angle?  (Because the 10,000 mcd brightness comes out from a superbright type LED if your input is like the 3.2V @20mA, from data sheet.)

Do not get me wrong, I do not question the efficiency or COP of your circuit, I simply would like to understand "brightnesses".

Putting it otherwise, let's say your circuit is built into a electric torch case and you use it in total darkness, holding that torch in your hand near and above a book for reading it,  and say the 4 LEDs total consumption is  .81 mA from  .9 V: can you comfortably read, without forcing your eyes at all?
This situation is totally comfortable for reading in the above situation when the LEDs get 3.2V @20mA each directly or from a separate conventional circuit.

Thanks and keep up your excellent work,
Gyula

[innovation_station]

THERE IS 1 WAY TO MAKE MONEY FROM THIS AND WE ALL ARE DOING IT ...

NO OTHER WAY ....

SELL IT TO YOUR NEIBOUR .... 



IST!!

IF YOU WANT TO MASS PRODUCE .....  THEY WANT CONTROL ... 

I WILL STAY IN MY OWN CONTROL .....  NOT THERES ...  ACCEPT THERE MONEY ... THEY OWN YOU !!!!!!!!!!!!!!!!!!   LOL

I WILL NOT SELL MY SOUL............................


THE CHOISE YOURS.............

BTW NOTICE.... WHO DOESENT HAVE A ELIETE TITLE BESIDE THERE NAME ..........  ALSO TAKE NOTE TO WHO BEEN SLAMED WITH  COMPUTER PROBLEMS..............................   

NOT THE ORIGINAL MK2 CREATOR?!?!?!?!?!

HUMMMMMMM

BUT IT IS OK GADGET YOUR ONLY DEALING WITH  HEMF...................  RESONANCE ....      LOL AND ONLY HALF OF IT AT THAT ... 

WICH RESOSNANCE IS AN EFFECT OF THE CAUSE .... LOL

AND IT ALL HINGES ON THE LIL KICK .... I EXPOSED LONG AGO ......  I WAS NOT ALONE THEN I AM MOST CERTAINLY NOT NOW ......   LOL

BEMF IS A LIE .......................

I HAVE BEEN SAYING THIS A LONG TIME ....  BOCK IT ?!?!?!   DO YOU WANT TESLAS OWN WORDS................  I THOUGH SO ....

NOW GET MONEY OFF YOUR MIND....  I HAVE LIVED ON LESS THAN ANY OF YOU ................   DOUBT ME ?!?!?!?!

I STILL HAVE A LIST OF INVESTORS ..........................    LOL

BUT IM OPEN SOURCE....   

[hazens1]

@IST
Yeah the toroid is Pastel Green with Blue on the top or bottom depending on which way it is sitting. All my toroids were ripped out of a power supply for the bigger ones and I got a few smaller ones out of burnt out CFLs. I'm going to order some off the internet so I know exactly what I have when testing.. Thanks for the advice, I'll try it..


@electricme
My data sheet on my tlc555 timer says it runs 2v-18v. Follow the link I put about JT 555 timer circuits and ppl are claiming to be able to run some 555 timers on only 1v-1.5v  I bought 2 tlc555 timers from Radio Shack for $1.59 a piece. Haven't tested them yet, but like I said, the data sheet say minimum 2v for operation. Radio Shack also sells a tlc556 which is 2x tlc555 in a single chip..

[nievesoliveras]

Hi.Great work going on here and i am following it closely.
A while back when i made a joule thief powering a pulse motor,Pirate suggested puting a dc motor on top off the pulse motor top and tail fashion as a generator well i had a play a while back with the idea and here is the result.I have not used a pulse motor i have top and tailed 2 dc motors.The top one is powered by the cap which is charged by the joule thief and the bottom motor is the generator.Here is a video off it running.This might have possible feed back to sorce potential or maybe chargeing batteries.
http://www.youtube.com/watch?v=5ynFm-JwYjY
@electricme.If you are still having problems with utube,let me know and i will send you the vid if you like.
                                                                    Regards jonnydavro

Good job!

Jesus

[innovation_station]

OK  guys i fired up my comp meter ... 

and you all want mesurements .... lol

so be it

my big green coil is running 7.0 -7.8 khz...   one could say it is in a close state to    magnetic resosnance ....   

lol

also i will add a picture of the unit as it sits ... im makeing the second supply mk2 coil


ist

ps when i finally get the print screen deal to work with this computer i will post a comp readout of my coils for every one then scope shoots ....   sure i have all the tools ....  i might get to digging out my micro amp meters .... lol   blew 1 up already tho ...

but i have a few of them