Joule Thief

[electricme]

@ All,
Carnot play catch up just yet, got to make this post, then pack for the weekend, then be back on Monday.

I needed a break from here as I wasn't getting satisfaction with the JT work I was doing, sometimes a complete break and fresh ideas are needed, I stumbled onto a couple of things in the other forums and fealt these are what I needed, and lo and behold, some complete surprises.

OK I mentioned I had managed to run my bedini on its own output, this is how I went about it.

If you take just the output from the secondary coil after rectifying it, and place the Pos to power in and Neg to Neg in, it will not work.

The trick is to insert 3 12v batteries (in my case I had 3 long thin gel cells), connect them in series making a total of 36v. My Bedini can put out 40v rectified.

No I took the power from the middle of the 3 batteries (Batt 2) fed the Pos to Pos input and the Neg to Neg input and it kept running.
Next I disconnected the original battery which started and ran the bedini.

How does this happen, well I think the small amount of energy cripples itself, (it sees it as a short circuit) but, if the full output voltage is applied right across a much bigger battery, then if you take from the center battery, it seems to be "sampling" the energy.
When the Transistor turns off, the pulse hits the battery, the battery supplies just a small er energy to feed back to the Bedini circuit.

There seems to be a rebound wave of energy that is created, much like a spring effect at the battery. Difficult to explain this.

OK now how to make a JT run on its own energy?

Do the same as I did with the Bedini, but use 3 "extra" Batteries on the output, make sure you bridge it first.

I think (I haven't tried this) if you get 3 identical capacitors (electrolytics) and connect them in series, then connect them the same as the 3 batteries, this should also do the same thing.


Here's a few circuits  have fun.

jim
 

[jeanna]

@MK1,

I am sorry if I offended you.
I did not mean to.
I do think you are worth a lot more than your favorite diode method to learn the output of your coil.
A lot more.

I think you are a valuable member of this thread.

jeanna

[Pirate88179]

Jim:

Congratulations!!!!  You now have a self-running Bedini.  I believe Gadget has some of these also.  I do not think John Bedini himself has these, or if he does, he keeps it quiet.  Very nice work my friend.

MK1:

I echo Jeanna's last post in that you are a very valued member of this group.  Everyone here learns in different ways...some visual, some by listening (auditory) and some by hands on. (I fall into the latter group)  Jeanna has done a ton of work here and has well documented her efforts.  She does not have a mean bone in her body so if her comment about the scope did not go well with you, consider the source.

I have not done much with my scope thus far and if it was not for Jim's help, I probably would not have even turned it on even today.  Jeanna, on the other hand, has jumped into the scope research with both feet and I will be asking her for help on using mine in the near future.

So, it's all good and even though we are different folks learning in different ways, we are all getting somewhere as a team.  And that is how it should be.

Bill

[nievesoliveras]

@ All,
...
OK I mentioned I had managed to run my bedini on its own output, this is how I went about it.
...
jim

Congratulations @electricme!!!
If what you say is true then you are my hero!!!
I will replicate as soon as I gather the needed parts.

Jesus

[xee2]

@ electricme

OK now how to make a JT run on its own energy?

It looks like this is running on the batteries. Will it run without any batteries?