Joule Thief

[altrez]

@Altrez,

Yes, I have been looking through catalogues here too.

jim

Please let me know if you run across any good deals:)

-Altrez

[altrez]

i wonder how effectively this JT or similiar curcuit could power a Peltier or Thermo Electric Cooler?  i dont have one but if someone does and wants to play with it the idea is maybe we can make a super effecient Air Conditioning unit?

just a thought

Do they not the need a lot of current to work? And what application would you use it for? I know heat sinks for PC but can other things be done with them?

Thanks!

-Altrez

[Thaelin]

Hi all:

   I just did the resonance thing with idenical coils and caps. The input bulb was lit while not at res. When I hit that, the one bulb went out and the other came on. New cam is a POS so cant do a vid. Output volts was right in line with input volts. When put on a FWB, I got the subscribed output to the cap. Hence, 20v p/p input from the Signal gen, output to the cap was around 30.
   Since that didn't feel right, I took the coils off and put the bridge directly across the s/g and got the standard out of .7 times input volts. That is in line with the RMS of the input. There was enough to make a nice pop at the cap when shorting it. Will have to see what the manual says for output ma's. Doubt that it could supply that kind of pop I got from the coil set.
   Still something here doesn't jibe to me. So more to do and play with.


   Now, since I am on the subject of resonance. I have a problem trying to find out how to calculate the ring down frequency of a parallel tank. What I am trying to find is if I fire the tank with one input cycle, how many cycles will it have internal before the time for the next input spike? I have ask this a few places and not one seems to know. Any help will be much appreciated. Some where on this forum I remember that being addressed but just too many places to look.

thaelin


            Pirate, lets set a record here and take this thread over 1k pages   

[petersone]

Hi thaelin
Pleased to see you doing tests on the resonate thing, it will be interesting to read your final conclusions,at fist glance,to me it looks like ou,not enough to light the first bulb,but plenty to light the second,but I know things aren't that simple.
peter

[nievesoliveras]

Hey Man,

Do NOT give up!! You are close VERY close to your goal. I have noticed on my self charger that the connections have an important part to play and I do not mean just completing the circuit. I tried to make better connections and lost my oscillating effect that seems to be the reason for the  charging of my battery's. 

I think it has something to do with resistance and load on the circuit when matched with the frequency that the toroid is resonating at. Try to unsolder your connections and place small v-resistors on each one so that you can micro adjust. Also place a voltage regulator on your AA to tune the circuit.

Then you find the perfect setup for charging. However what I have noticed as a side effect that it will also charge my source battery I am not sure exactly way but it is very good!!! However once it gets to a certain level the circuit changes and needs to be readjusted.

Keep it up! And thank you so much for all the wonderful diagrams.

Take care!!!!

-Altrez

Thank you @altrez !
There is something among my experimental parts that always is trying to fool me and to make me think that I have something and after I post, It just disappear and let me feeling silly and looking like a fool.

Well, jesus,
That statement is the only failure I can see here.
I really mean it.
It takes courage to be willing to be wrong.
You have showed your courage many times in your willingness to risk being wrong.

You save others a lot of time and trouble when you publish your mistakes along with your successes.
To know that this sort of worked with a loose connection may be the clue you or someone else needs to make it really work.

Look up resinrat2's signature. I need to leave for the day so I cannot, but it is perfect about research and failures.

jeanna

Thank you Lady @jeanna !
I do admire the way you experiment with everything taking notes and sharing them.

A small history of Ou ...

Thank you @gadgetmall !
I could not do it this time and I feel ashamed because the failure was public. At least this time I did not get too euphoric and put a message on every topic that was on my replies to my posts page.
I must be more careful from now on.

I  have been  playing  with my  Jesus JT / charger

It  took  a while  but I got it charging again

...

Mine worked for about 4 days in a row, keeping the same voltage, and when I lighted the LED, the battery got discharged normally, then when I closed the loop with the diode it began charging happily and wihout fail. If I put another empty battery with at least 0.5 volts to start the oscillations, it would climb up to a better and higher voltage.
I just tried to improve it with a cap across the base resistor and...

Jeasus

You are clearly  confused  about a few things here .

Edison  tried  over 2000  different  filaments  before  he tried tungsten .
Some  people  would say that he failed 2000 times before  he succeeded .
I do not see it that way .
Edison  would  not  have  succeeded   if  he had  given up  before  he tried tungsten .
Edison  didn't fail at all  because he did not  give up .
No one  fails  until they  give up .
No on is a failure until they  believe that they are less of a person  because something they tried did not work out .

Jeasus
If you need to a break  or need to move on that is fine
It is  OK  if your  circuit is not   perfect.

It  worked great for me  for  hours yesterday .....then something  changed   and  I could not  get it  charging again .
I so NOT see that as a failure .
There is  just  stuff going  on with your circuit  than  we yet  understand .
In any case ......... you have did  a great job.
Your circuit  has  lots of possibilitys  even if it never makes  it to   a full blown  self charger.


gary

Thank @resonanceman !
I need some more patience and a better test equipment.

Nice work! I am seeing the exact same thing. My leds are flashing and my meter is going nuts. The battery is charging fast and all you need to do is increase the resistance.
...
-Altrez

You are right! A loose connection produces a high resistance...

@Jesus,

Don't be sorry about failing, you posted results with the very best of intensions.
Then you discovered it was a loose connection, and you put it right as soon as you discovered this, and you did not cover it up.

Jesus, a couple of years ago in the stubblefield forum I made a huge mistake, and it turned out to be a leaky earth system from my hotwater system, for a few days I thought I had made a big breakthrew, when I found out, I felt as silly as a goose.
But I did'nt hide this fact, I came clean, told everyone on the forum, and credability was back.

In fact I take my hat off to those people who make a mistake and are able to say they made one and have put it right.

I do look forward to reading your posts.
Your OK in my book Jesus, no problems.

jim

Thank you @electricme !
I also thought I had made a big breakthrew.
I will be more cautious the next time, before I post

Thank you @pirate for having this good topic running.
Thank you to all the well wishers on this forum and
Thank you @hartiberlin for allowing us to learn and experiment with the information within this forum.

@all

I will be more careful from now on and will not post carelessly.

Jesus