Joule Thief

[innovation_station]

you know about a year or more ago  i built some good bedini units ...  there are 2 diodes a neon and a resistor ....  my 3055 dont get hot ...  and i dont blow any ... 

not 1 ...

my plan is to use it to drive my last coil ... but since i moved i had 4 or 5 soldreing irons ..  looked all night ... do you think i could find them ...  hummm

o well  i hope to find them today ..

i did some basic tests with my last coil ... the more of the 8 coils i hook up the bigger my flyback is ..  i need to solder it b4 i wind the final coil on it .. and hook it up ...

IT IS IMPORTANT IT IS SOLDERED AND SEALED ..  or it will arc  i have had this in the past .. and been zapped!  from an un soldered and un sealed end ... all i did was go to touch the coil and it jumped to my hand ...

verry much like a static zap ..

ist!   im a gonna find me an iron ... 

[gadgetmall]

Yes, it is.
In fact it is how my golden light is wired.

There is as I mentioned a difference in what you are doing.
The rheostat which is the pot at the battery pos end is raising or lowering the maximum amount of voltage available to the transistor and not changing the pulsing part of the joule thief. me .



The pot we are used to adjusting is making the the frequency of the pulses but each time the voltage is on the leds are fully on.
It was what lidmotor did. I didn't get it at first, and it only works on a circuit where there is more voltage coming into the basic joule thief than is necessary.
It makes a dimmer or brighter light without changing the flicker rate. Now we don't really see the flickers, but we do, and it looks like a color difference more than a flicker difference. I do not know if I can explain it any better. It is worth looking into.

I was not able to make any use of this with a cfl of higher wattage like the 20 watt. If I raised the resistance on the rheostat the light would go off right away.
I used the trick today with a partially blown 19-led bulb because I was  wanting to lower the light while I checked it.
In my AC circuit I have used a 33 ohm resistor to severely  dim the input voltage for the sake of my eyes, so it makes a lot of sense. Radio shack has them for 4 bucks.

I hope this makes sense,

jeanna

Jeanna . Cool . I rre read your post and i see thast what you were doing
HOWEVER  i do believe this still changes the frequency as the transistor oscillations are voltage controlled . If you put a radio near it you will see what i mean . My daughter can hear it . I cannot hear high pitch ringing anymore 12 years of loud  mucic from My band and the stroke has left me with permanent ringing in my ears all the time. I used to hear the HV transformers in TVs when they came one now nothing . She hears all the jts sing . I wish i could hear them but i can thru the radio . What we need is a stable oscillator and a 555 timer oscillator is perfect for this . Only thing is it won't work on 1.2 volts with out a stepup converter or possible a dedicated secondary filtered and ran thru a regulator for 5.5 volts . That way we can lock the frequency a lot closer . It will still drift a little but not as much as just a transistor  . Also the little Fl light is still running strong this morning . It lit up the bedroom last night and its as bright a a few .5 watt straw hats . One thing that i notice is the batteries i use . There walmart Energizer ni/mh 2500 mah . these are the best batteries i have ever worked with . they are expensive but they are well worth it  for experiments and cameras . I got 6 of them and that is what my camera and all my projects from from a very long time.
Albert

Gadgte

[innovation_station]

i still do not understand ... for the life of me ...

why you all worrie about drift...


i find this all to be A LARGE WASTE OF TIME ...


as long as you have fun i guess...

let me ask you if the original inventor of this ... used 555 and diodes ... lmfao....

im just guessing he did not ... and im also guessing he was NOT WORRIED about drift...  maybe he was worried of SHIT BLOWING UP!  YA THINK ...

SO TUNE IT RIGHT IN ... KEEP IT IN SYNC.. AND THE FIRST SMACK OF POWER .. IT WILL BLOW UP ..

tesla  noticed on his magnometers 1 day  ... they would move in the presents of an electrical storm ....

hummmm

w

lets hear it 1 more retarted time .. how it must be in resonance .. i say bullsh@t..

why ... cuz i know resonance is an effect of the cause i have uncovered .. in the last 4.5-5 years ...

thank you!

and just because a jt runs fast ...  you think it only works with speed ... agin WRONG! ... IMAGINE ...

then you get the reall dozzies that say aaaahhh  its only an effect of hfe... lol lol  ...  i bet! maybe in there mind ...  i have done this with a source ... no diodes .. and no transistors ... and burnt mots ...  and the hummmmmm  lould.... imagine ...

ya ... 

remember this old picture ...  where is the transistor ... ?  lol  do i need the diode .. i mean really ?  ... the cap too ...  sure i can throw it out too ... 

what ya left with ?   

looks like some big a$$ KICKS .. AND THE MAGNETIC CURRENT TO GO WITH IT ...

agin i did this public many moons ago ......

here is a video ....   whos right at home ?   : )
http://www.youtube.com/watch?v=Ri_HbDCwf_E
my door bell ...  the WHITE STRIPES ...   yes  yes me and my mistery miss!
http://www.youtube.com/watch?v=Bf1ZmTxXTEw
w

ED.....   care to explain ring the bell 2 time ?   ? ? ?

ding dingggggggggg  lol   hummmm  what does a door bell do ..  ? it is set to ring ... then you pulse it ... lmao

[innovation_station]

take a look at captian pecan's work..  just as a reminder ...

http://www.youtube.com/watch?v=vwp7podu06s&feature=related

ist!

now what if those ubc caps ... were just a little bit better..... : )

[jeanna]

Hi Gadget,
Yes, I know what you are saying.
In fact I expected that to be the case. It is and yet what I have described is also in there.

BUT...AND
I must say, I agree with ist here.

This was just an observation that it is different from the more direct effect of the base resistor.
I have always tried to avoid a dependence on resonance.
I have always tried to back off from it because I think it is too finiky. It is great to have everything suddenly turn on high, but I like having the reliability more, so I find the resonance spot when I can, then I back off,
My new winding has given me a much broader band width.
I was hoping to make a 3 phase coil, and came up with this wider band. Maybe it is 3 phase and I just don't know it? I actually have no way of knowing if it is. I can barely understand it, and I am not interested in trying to, because most explanations involve sinusoidal waves which are not relevant here...

I think the crisp clear or is it crystal clear light cubes made with these lamp components could be cool. Maybe you could make a mold with a cylindrical hole for the bulb which would allow you to change it.


Thank you.

jeanna