Joule Thief

[innovation_station]

@ ist
Thank you for your interest.

i have many intrests in your skills

sir ... 

i just want you to share ... same with will mags and many others ...

: )

so old dear friend JP  stops in for a visit ....   and well   it is not fit for public conversation ...

i will go so far as to say ... 

i dont think this unit can be topped!

he wants me to build it ...  and if i do  it is to be named JP AC! 

REGARDS...

i added my twist as well   alum ...  :; )   the origonal calls for copper ...  however i beleave alum to yeild better ...

it is a solid state of the art device!

i can fully explain ...  b4 i build it ...   

W

materials will include copper alum magnets ferroite ...    it is pure genius  came to him in his dreams! 

i need not say more .....

you all know how bad i want to share this ??   well    it all hinges on my work .... 

i pretty well have exposed most of it already ...  but not assembled as it was delivered to me ... 

and 5 min of talking bout it ...  with JP   and we ballanced it ...  ; )  dubbled the possible ou puts too lol

[crowclaw]

Well this does look like a fun weekend project.  Thanks for posting.

I have made three working JT circuits on different size toroidal cores, (of questionable heritage,) and one with a television transformer.

So, your twin JT coils are on the bottom ring with the secondary on the top?

You're not also using a toroid core here, are you?

A schematic would help make this an even funner weekend project, if you have the time.  It might also be fun to figure it out myself.  Either way, thanks for sharing.

Hi Rosphere,
Thanks for your interest. The bottom 10" coil is the JT, wound with 14 turns of insulated stranded hook up wire around the circumference of the ring (primary) and tapped to 2 turns of same wire for base feed (secondary) The top coil is floating and totally in dependant of the bottom one  and has just the 14 turns around it's circumference and terminated with an LED. The difficulty is to attain matching coil resonances as the transfer efficiency is not brilliant. BTW I prefer to use stranded wire for my multiple wind coils.

[jeanna]

@crowclaw,
One more question, please.

This configuration produces pulses of approx 160 volts @ around 20Khz.
.....and.....
The distance between the coils = 5" to give light as seen but will remain lit up to around 9_10"

Where are you measuring this?
I gather the "light as seen" is connected at the pickup, but it should be blowing the light up wherever it is. These leds cannot take this kind of spike of more than 20spikey volts each over 50Khz, and really 10 spikey volts is the most I dare to design.

So, I find this very curious.

jeanna

EDIT:
I see you answered this to rosphere while I was typing!... sloooow typer.
j

[innovation_station]

J

will you build  this with me?

it is  the wildest thing .... 

it is even wilder how and why it works as it does ..... 

and ...   there aint much better ....  built yet ...  public anyhow ...  and i doubt they built it properly  otherwize ... 


: )

W

i dont need to ask K  he will do it in a heart beat ... : )

of course me being me ...  i got a 1000 ways to do it too ....   but JP'S drawing ...  is damm nice ..... : )

[jeanna]

J

will you build  this with me?

it is  the wildest thing .... 

it is even wilder how and why it works as it does ..... 

and ...   there aint much better ....  built yet ...  public anyhow ...  and i doubt they built it properly  otherwize ... 


: )

W

..   but JP'S drawing ...  is damm nice ..... : )

I cannot find JP's drawing, so I do not know if I am interested.
Please let me know where it is, and I will have a look.

jeanna

Here are 2 pics of the circuit stand I just made.
I can use any unmodified LoA bulb in any lamp with this as long as the lamp has a commercial plug .
The switch and the plug socket are glued to the board and will stand on a table anywhere next to any lamp.
I like this design as  it is modular and portable, and yes, you can use both plug sockets although there is some dimming of each light, but NOT half, so by using 2 lamps in this, the spikes are being more completely used.

Oh, and yes, there are 2 AAA batteries. One was just a bit lower than fully bright. I will be actually using this with a real lamp (not this one which is the thrift store kind) so my priority becomes less scientific, and more practical.
jeanna