Joule Thief

[nievesoliveras]

@jeanna

You asked me something on this link:
http://www.overunity.com/index.php?topic=6123.msg184056#msg184056

I answered it on this one:
http://www.overunity.com/index.php?topic=6123.msg184064#msg184064

I say this just to keep the conversation syncronization. Maybe this information can help somehow.

Hi jesus,
You are describing what happened to me with the biggo after I was finished working with it.
I had everything just right, then moved it a tiny bit, and it seemed to go off.
This happened over and over again.
I ended up changing the pot for another one and it was all right. (for a while)
A while back Gadget shared a theory about the wiper being necessary for his special fuji mod because when he used the standard fixed resistor it didn't work.
I do not know if he still thinks this, but in any case, there could be a tiny capacitance or rather spark that jumps from wiper to resistor that makes these toroid things come alive.

I had some "trouble" with a pot way back when I was doing the adjustments the way MK1 does with a diode bridge and a cap and a single turn pot.
It was really in the way for me at that time, so I remember it well.
I blamed the single turn and bought a precision pot and all of them continue to act the same way.
There is a similarity here and it may not be bad components or bad connections.
In some of the parts of our circuits we have either very high voltage or very high frequency.
...
jeanna

I was wondering if it was a spirit inside my electronic parts, but it seems that is something normal.
Thank you.

Jesus

[xee2]

i couldnt light me 30watt tube becoz it use a sort of Jumpstarter.(see pic)
just connecting the 2 wires from the poles of the Cap 2 the tube don work

is there a way 2 connect a tube without this Jumpstarter?

Connect directly to tube.

[jeanna]

i have messured it again with a new AAA battery...and it went above 1000volt...my multimeter dont go higher than 1000v.

thnx 4 any responce on me questions

take care & Peace!
V2DAY

btw...ima trying 2 make a JT circuit, only transistors i have r TIP3055, NPN/PNP-21193/21194..r these any good 2 use? many thnx

Hi free,

I am sorry to say I believe you are using the wrong fuji circuit.
I believe I got the closest with that AAA one, but no one was able to make the fuji AAA circuit work. I got it to turn on but only if I touched it. It stayed on for 5 seconds then went out. It just does not produce enough voltage probably.
The one to use has a AA in it and a black push button for charging.
My guess is that yours has a green slide button for charging??

===
I think the best way to start making a joule thief is to get a 2N3904 or 2N2222. They are really good at making a circuit that works right away.
Once you have had one work, then make others in other ways.

Well, that is my approach. It may not be yours.

Have you watched the youtube video ?

http://www.youtube.com/watch?v=gTAqGKt64WM
this is how I made my first one before I came here.

Where are you living?
Is that an italian accent?

It might be easier to help you if we know what country you are living in.


jeanna

[nievesoliveras]

Jesus

Thanks for replying

Just  a few more questions

Did  you  try  anything higher than 104K 
I am assuming  you  these  caps are  pF

When did  you last  get   your circuit  to charge  well?
Was it  before you  found Improvement 2 ?
It is my experience  that a pulsing  DC charges better than  a steady DC .

Are you  still set up on a breadboard ?
I had  trouble  with stability  alot when using breadboards .
So far mine seems pretty stable ......but  it is soldered together .

I tried also 473k and 474k

By the way
104k = 0.1uf   = 100000pf
103k = 0.01uf  = 10000pf
...
474k = 0.47uf  = 470000pf
473k = 0.047uf = 47000pf

The last time my circuit worked well was two days ago. It seems like if it were a spirit playing inside the circuit sometimes, or maybe it is that the toroid enter into resonance and then stop.

I do not have an oscilloscope or any fancy meter to help me on this quest.
That is why I cannot trap the charging state.

I am still using breadboards. I cannot solder the parts because I use them on different experiments. I store the schematic of what I did and sometimes some explanation of how I did it.

Improvement 2 is used only to run the pulse motor, it does not make any difference on the charge output.  Without it the motor gets slow, with it the pulse motor goes faster.

Jesus

[jeanna]

jesus,
I am going to be told I am confused about the joule thief again. oh well. so be it!  .

If there is a very tiny spark in the circuit caused by something like hi voltage flyback/emf, or high frequency hivoltage back emf, then it could bleed off the voltage in the way that adding a neon light in strategic places would.

OR

It could add a little more by sparking in the right place and time.

There is little chance I could design something to do this or to not do this, but it makes good sense to me.

I know very few people here have read the tesla lectures that taught me so much. I am not sure people would read them if I went to the trouble to make a good enough copy for download.  It is a bit of trouble.

I say things I got from reading the lectures, and some people think I don't know what I am saying.
I don't,
but since it is coming from tesla, I trust he does.

He had to put his "disruptive discharger" into oil that was boiled out to remove all the oxygen from it because only in that extreme environment could he stop the tiny sparks from occurring.

We know tesla used 100k herz and 100k volts, but in these lectures he talks of using 5k and 10k Hz and calls that high frequency. These lectures put a lot of things into perspective.

A lot of the words contribute to things we no longer need like a good light bulb and a transistor, but it is very informative. I wish more people would read these lectures.

@jesus, it may even be that when the humidity is high you have better results because these sparks cannot happen.
Or the opposite because the sparks are serving a purpose.

maybe spirits are sparks! 

jeanna