Joule Thief

[jeanna]

@Gary

I have noticed  quite a few times when   the voltage went down   and the lights  got  brighter .
This may be  due to frequency ........but I think it is more likely   transformer  action .
Less  voltage but more  current .
I  have  driven my arrays at 250 V and still not  had  them at  full  brightness
If  I had full current  they should have been as  bright  as  running from  a wall socket at  a simalar  voltage .  .

This is a good point, Gary.

I will give it some thought and experiment a little with it tomorrow.

Your pics are showing good results. bravo!

I have been trying to spiff up that Tesla lecture from London. It is down to 5.3Mb now. As I remove extra spaces and the pages get smaller, it grows littler. I am less than half way through, however.
I am doing it because I think it is important for others to be able to read this. There is a whole lot we in our world of lights and mains power simply do not need, but buried in all the stories of experiments are gems that no one seems to remember.

Here is one.

Whenever you have a secondary, close it onto itself and attach a capacitor to both ends. He basically says don't ever not do this. Sometimes you want to attach a cap to the primary as well. I think thanks to gadget we have been doing some of this, in our jtc's, but it never occurred to me it was an always idea. The point is to keep the oscillations going.

jeanna

[stprue]

ok so i have all the caps running proper i want to add the next cap off the bigone what is the best way to isolate the big cap from the small 1

i want to sneek 1uf from the big caps  and dump the 1 uf 50vdc cap to the mk2 rings ...

i soldered 1 small cap on there with a diode between but when i drain the 1uf cap the big one also drains ...

call me dumb ... but i have NO SCHOOLING IN THIS STUFF... 

and if i did i dont remember ... lol

maybe i need a resistor i dont know for sure i would sooner look dumb and ask for help than mess a round for days figureing it out ... 

ist!

i bet i need a common ground to the aaa battery for my 1uf caps..  were just splitting the pos here 

lol   just lke the cam units...

Great work ist.  It kinda looks like a TPU without a cover to hide it doesn't it?  I wonder what the performance would if you added in some max/supercaps!!!

Keep up the good work

[jadaro2600]

Does anyone know that actual working voltage and current needed for one of these twist bulbs?

Not what you've successfully used, but what it uses out of the package?

The LED's seems to be working better.

[resonanceman]

Here is one.

Whenever you have a secondary, close it onto itself and attach a capacitor to both ends. He basically says don't ever not do this. Sometimes you want to attach a cap to the primary as well. I think thanks to gadget we have been doing some of this, in our jtc's, but it never occurred to me it was an always idea. The point is to keep the oscillations going.

jeanna

Jeanna

I am not  used to  the way Tesla phrases things .

Is he saying that  all our secondrys should  be  stand alone resonant circuits ?


gary

[jeanna]

Jeanna

I am not  used to  the way Tesla phrases things .

Is he saying that  all our secondrys should  be  stand alone resonant circuits ?


gary

Yes, I think so. It is what I am beginning to find out. As I poke at things, this keeps being what I see too.

He also uses different circuit diagrams from the usual dc one, and although it makes more sense, it is confusing at first, and takes getting used to.

look below. I will repost this.
There are 6 separate circuits being used simultaneously.
Looking from left to right, you can see that after each drawing of a transformed pair of coils, there is always a condenser.

I missed why until I caught it yesterday... well I discovered it then noticed that he had always said it.

I have been thinking about one other one today.


His lectures are hard to read because he just gets started on something new to us then moves over to talking about lightbulbs.

I have got this understanding and 'method' from his lectures:

You can make low frequency turn into high frequency and when you do that you make high voltage.
The high voltage comes as a result of the high number of times the BEMF occurs.
Then because you have high voltage you can make it spark and turn the spark into something else,

Or. you can keep the energy high and allow it to oscillate.
If you make it oscillate you can use the same energy again and again, But, to do that, you must have the condenser/capacitor to keep the oscillations going.
And the best place for that is to have it in parallel with the coil.

(There are instances for putting it series, but not here.)

jeanna

edit
oops, not all 6, one is a rectifying method and one is just using the spark as it is to light a bunch of lights.