Joule Thief

[Artic_Knight]

@ Artic_Knight

This is a common two layer solenoid coil. I do not understand why you call it a "tesla bifiliar". Using uncommon names for common things only creates confusion as to what you are talking about.

Great drawing. It clearly shows what you are talking about.

i call it a tesla bifiliar because tesla had the first coils in patents resembling this coil thus tesla is the originator.  when he wanted it to radically enhance the voltage like a step up transformer he made the tesla bifiliar pancake coil which used 2 wires in parallel spiraling toward the center, now if he wound a round motor coil or transformer coil like we are doing he had them in parallel so that the coils alternated ababab like that. this increased the magnetic capacitance of it. now if it was layered IE more than one wraps on top of each other than he would stack coil a on top of coil a and coil be on coil b. 

tesla as far as im aware is the inventor of this coil and to this date i have not personally seen or heard of a better magnetic generating coil. it however has its short falls. if used as a pickup coil it restricts the voltage and allows only amperage to be seen. this in the use of a joule thief is not very effective and i am currently running a series of experiments to find the best mix for this cause.

hope to have more for you soon

[xee2]

@ @ Artic_Knight

First I would like to apologize for my bad mood yesterday. I am familiar with the type of coil you are talking about. But I have not used one. I assume you have found this to be better than a solenoid coil. Can you provide any data to show why you think it is better? It would seem to me that it would not be very useful in a JT since it seems that the only way to use ferrite to increase the inductance would be to put the coil on top of the ferrite. But that would mean that a lot of the magnetic flux would be lost as opposed to a toroid where the flux is all confined inside the toroid. Sorry again about my comments, but people always coming up with alternate names for everything is one of my pet peeves.

[altrez]

Altrez

My  circuit is  charging  again
I left  it for a couple hours and  when I came  back  the battery was .01 lower ..      I  I looked   around and found that the  2 diodes  connected to the emitter  came apart ......

I have  fixed it   readjusted it .......   it seems to be  charging  again .

I am  going to try to get  one on a circuit  board tonight .



gary

My tests after a week are interesting. I have went past the starting voltage however its lower every other time. I am not sure why and I believe it will even out to a standard charge rate / voltage. I am fairly sure the battery's are being conditioned in such a way that they will preform better and better each charge. I need a few months of tests to be sure.

Also I plan to buy a new fluke with USB support so I can monitor the charge 24/7


-Altrez

[Artic_Knight]

@ @ Artic_Knight

First I would like to apologize for my bad mood yesterday. I am familiar with the type of coil you are talking about. But I have not used one. I assume you have found this to be better than a solenoid coil. Can you provide any data to show why you think it is better? It would seem to me that it would not be very useful in a JT since it seems that the only way to use ferrite to increase the inductance would be to put the coil on top of the ferrite. But that would mean that a lot of the magnetic flux would be lost as opposed to a toroid where the flux is all confined inside the toroid. Sorry again about my comments, but people always coming up with alternate names for everything is one of my pet peeves.

no worries xee2

well it seems your thinking of the flat pancake version. im using teslas other version which was wound ababab and when a ended it was connected to the beginning of b. this can be wound around a torroid but its tedious and if the coil is large with thin wire its a royal pain in the you know what to keep the wires from criss crossing.  i think its better because of the way in which it acts like a single coil step up step down transformer. also it creates a larger magnetic field ususally which if your thinking what i was thinking no it doesnt create OU in itself. sorry guys.

@all
i have attached a pic of what i believe to be the best configuration. please be mindful everyone will need to tweek it to suit thier particular resistances in the torroids wires caps etc to get it at peak.  i have not had the time to test it but from what i have seen this should do the trick. i will let you know once i have tested this as im almost done creating the coils.

@@ just to throw my 2c at the world. you have to be careful when you have a solution that threatens any "field of business" like energy industry Air conditioning industry etc. things just dont get adopted when many many peoples jobs and lots and lots of income are affected for both the workers and businesses alike! and we know that the oil industries have made record profits in the recent years so something like OU if it was discovered would have to be released very carefully. lets face it your talking about millions of jobs! if you did have it and if you were able to get past all of the BS and people trying to stop you, lets say you just released it over night to the world what would happen? the world would have the largest market crash we have ever seen. record numbers of people would be without work and many many people both business and employee alike would be out a paycheck.  money does make the world go round and something to this magnitude would have to be adopted gradually so the market has time to adjust.

@ interesting detail

if anyone wants to look at significantly lowering their energy bills i have a quick and easy solution. albeit a tad bit pricey.  cool your home with geothermal. the temp stays low enough to cool without the need of compressors. just run a small effecient fan over a heat transfer unit with curculating water from the ground. you can do this with a 6 volt water pump from an aquarium if there is no air in the line. the pipe can be ordered for cheep but it requires trenches or deep holes. check out geothermal but remember your only circulating cold water not buying a heat exchanger unit

to heat your home have solar hot water collecters heat water in a bladder insulated and stored underground, use radiant floor heating and make sure that you have a instant hot water heater (one faucet version) tied to the incoming hot water and set for a low temp. if you have a good termal mass (cement floor) it will store and release heat very effectively and the water temp should never need to be above 90f to heat your home to 70-80f 

good stuff, and all of it should be able to run for several days off of a 12v car battery. that in turn can be charged by a 20 watt solar panel!  talk about cheep. can you say free?

@ NOTES

this curcuit has not been tested and will need some minor tweeks mostly concerning the number of turns maybe the parts could be optimized not sure.  when i say 20 turn bifiliar i mean 20 total turns, if you wound this with a folded wire only make 10 turns then when you combine the 2 coils it becomes 20 turn bifiliar. try not to cross your wires as this will most likely have a negative impact on performance.  unfortunately even tho the bifiliars have wonderful traits they do not make good high voltage pick up coils so a regular coil was added for the usful output.  the negative terminal on the coil may need to go through the led to the emmiter of the transistor. i adopted this image from previous posts and kept the current connection assuming it would work but may need to be altered. this should provide better results when using the tesla bifiliars.

[electricme]

@Resonanceman
IR LEDs

I bought  a UV  LED light  a whille back
I  was   running  2 of the white  versions  and  ended  up  powering them with 15 V rather than 12 .   they both stopped  working.
I would love to see how  a  UV   JT  would  work with them
gary

Hello Gary,
Firstly, running a LED with 12-15v is sure to make the LEDs feel very sad, ha ha.
However since IR LEDs carn't be seen working, I would suggest that you put a "white" LED in series with them, if the white LED lights up, then you can be about 95% sure the IR LED is working also.

A safety note here also, never look into a IR LED, to see if it is working, as IR radiation can enter the eye and cause problems.

jim