Joule Thief

[jadaro2600]

I got my  new toroid  wound ....not  quite  what I had hoped

87V with the JT LED  101V  without
No real power  ....... I  was thinking that once I got  around 100 V I would  be able to light  my  string  of  LED christmastree lights ..... Nothing  not even a blink

I am going to try  to tune it a little ....... maybe I will get  a little ,more ...

gary

edit

adding caps acrss the  base resistor  seems to add  some power 
I  added a 150uf cap    with  the  resistance  low it flashes very slowly .........but the flashes are VERY  bright .
With  the BIG cap  I  get 102 V  with  the  JT  LED          126 with  the LED remooved

Use a ceramic disk capacitor with a 1kv rating ..the higher the capacitance, the longer the discharge due to the draw and drain from that capacitor.  I've noticed on some of my models that the capacitance on the tank circuit part of the joule thief doesn't need to be all that high because it effects the pulsing.

Your christmass lights may be require ac power.  If so, remove any diodes from your pickup coil.

[innovation_station]

VOLTAGE COMES AT A COST!!



if you want higher voltage...  you need  higher resistance .....   

this is how i get 110vdc from 7x7 pickup .......   

any where in the working freq....

if i use a 4000 series diode my voltage is less than half ...... 

if i want to charge caps i want voltage ....  if i want to drive motors light bulbs and such  i want LESS resistance  and i will get less voltage and more amprage ...


if you want a sm17 well   npn pnp 2 jt's 2 caps and 1 BIG RING...    and dump the caps ....

im sure you get it by now ...

ist!

so what you want to build next!?!?!?!?!?!

did soeone want a GARAGE POWER SUPPLY??

SURE WE CAN BUILD THEM     

CONTACT ME ...   I HAVE TIME IM SELLING NOW ...

I WILL BUILT THEM ...  I MUST EAT AS EVERYONE ....   I WILL START WITH 1 KW INVERTORS ....

NO LIMITS!!

THE BATCAP WAS POSTED

[jeanna]

@jonnydavro,
I missed your post before. Thanks for making that youtube vid. It is very clear.
And thanks for the replication.

@Jadaro,
Who knows what it means. I know the amount without the light lit is what the transistor takes. I don't understand why a short anywhere is necessary to describe this. [I think it is tuning]  also,
The transistor is using the amount going through the base wether or not any thing is across the C,E. Plus there is nothing at all connected to the toroid secondary winding when it is not being used to turn on a light..... I don't think electronics has an explanation for this.

tee hee... toroids are fun to wind!! (its all attitude  )

@resonanceman,
I am not really turning the lights on with 10V. They are arranged in parallel and really take only a couple of volts.
All of my christmastree lights from 3 different companies  are designed in groups of about 35 in series. If you divide 110 by 35 you get 3.1v or a nice safe voltage for a bright white led. .a spike won't kill the string and a dip won't turn it off either.

When I did that 30 led array in january, the arrangement was a combo series parallel. There were 10 in series and each of those has 3 in parallel.

Later I rearranged my array to 30 all parallel and not only did they all light, but there was little more required than to light just one.

IMO 30 leds is too many to be a useful light. The light strings are nice, but I think they should be rearranged in parallel for use with a jtc.

Someone AbbaRue, maybe, told Bill to short the 2 light prongs in the led string. This was with a fuji ckt, but it is what allowed Bill to light his 400 lights, or something like this.
Bill, can you supply the info here?

Way back wilby posted a few circuit diagrams for possible ways to remake a LED light built into a standard light bulb. A modification of this idea is appealing to me for use in house lighting. I have a spotlight led. Frankly it is too bright to use. It is great as a flashlight. but it makes it hard for me to see anything in a darker corner when it is on. It is too bright.

Imagine complaining about getting 87volts from 1.5! How far we have come!

thank you all,

jeanna

[Pirate88179]

@ Jeanna:

To clarify, if I can.  When I was told to bridge the two prongs from the male plug on my led Christmas lights, it was to see if it would light using one wire only.  It did.  100 leds lit using only one wire from the modified Fuji circuit.  All of the other videos I have done lighting leds with the Fuji was with using both prongs either in parallel or series...it didn't seem to matter that much for the light output.  I hope this explains it.  If not, let me know and I will try to make it more clear.

Also, Jeanna, I watched Jonnydavro's new video and his conclusion is exactly what you had posted before. To me, this is indeed a good replication and, having seen Jonny's other work, he knows what he is doing.  Add more leds and the amp draw goes down or stays the same.  They did not teach this in electrical engineering classes I am sure. (no offense meant to EE's)  Great job Jeanna! (and Jonny)

Bill

[innovation_station]

IMAGINE THAT .....


my you tube vid finally uploads.......

IST MK3 COIL  TRASNFORMER NON TRANSFORMER ACTION 

enjoy!!

ist

http://www.youtube.com/watch?v=Jiodkjo9hpk