Joule Thief

[innovation_station]

i think ballance is key ... 

perfect ballance is NOT REQUIRED

if you get it just right it will blow up ..

something will give!

infact i use a slight UNBALLANCE to cause it to work harder !

my latest units are secondaryless!   

: ) 

feedback is key aswell !

lower resistance with spinning units ...  high resistance with motionless! 

5k works well on my POLORAZIED bedini  with bucking magnets on the back ...

my 6 coil tpu uses 1k 5w 3055 and i BLEW METERS from it ! some places read 220 ma 300vdc

my last unit is running low resistance ..    only 2 magnets on a 6" wheel  bout 300 rpm 1 coil

clearly the more magnets you use the faster it will spinn the faster it will make and break per reveloution .. THE FASTER IT WILL RECHARGE ! !!!

IST

now the rest of my push coils i could add air core secondaries .. and pull from them ..  as i power the primary drive coil of the aux coils ..  from my 1 bifillar drive coil .. 

how ever ..  secondaries SLOW DOWN THE MOTOR .....  so u must spark gap from them! : ) 

then there is no loss in speed !

[electricme]

@ Jeanna,

Thankyou for those kind remarks, I will try and do my best with a askii drawing, it wont be pritty.

You will need 2 x 1N4004 doides or faster switching ones like 1N4007's or even betterones like 1N5408's 3amper's
you will need 1 x 1N5408 as a reverse blocking diode on the POS output.
you will need 1 x 104K poly cap (tiny flat package) a green cap may work also
you will need 1 x 473K poly cap (tiny flat package) a green cap may work also

Procedure to build the HV pulce diode unit

Grab a A4 sheet of paper and draw on it the following way.

Draw a rectangle (very lightly) about 1 inch by 2 inches
Mark the corners of the rectangle, starting at the top, Top left is (1), top Right is (2), Bottom Right is (3) Bottom Left is (4).


1            2






4            3


Now draw a diode with the body of it in the middle between (1) and (4), the BAND facing corner (1)
Now draw a diode with the body of it in the middle between (2) and (3), the BAND facing corner (2)
Now draw a Big Diode, from corner (2) going horozontal out about 2 inches, the BAND to the Right side.

Between (1) and (2) draw a ceramic capacitor, this is a small 104K polliester cap
Between (4) and (3) draw a ceramic capaciror, this is a small 473K polliester cap


The INPUT    wires from the toroid connects to  (1) and to (3)
The OUTPUT wire fro the POSITAVE is connected to BIG DIODE on (2)
The OUTPUT wire for the NEGATIVE is connected to corner (4)

Thats all to it folks.


          IN 
         (1)                   (2)          _________
          0-----||--------0--------[         ||| ]---------(+) OUT
          |                     |            -----------
          |                     |
          |                     |
        |   |                 |   |
        |--|                 |--|
        |   |                 |   |
        |   |                 |   |
        |   |                 |   |
          |                     |
          |                     |
          |                     |
          |-----||--------|
          0                     0
        (4)                   (3)
        NEG out             IN
       
Hi voltage caps can be found in walton cockcroft HV units


I think my JT is built a little different that will be explained next post---------------------------------------------

IST, I got your PM, I agree we must talk PM me please.

jim

[Mk1]

@all

I made a movie http://www.youtube.com/watch?v=wS935WyumjY

Ok , so i used my new 49 size bulbs , one on the secondary first , then one on the transistor , when both bulbs are on the secondary bulb is brighter then when alone. You see me adjust the base resistor , the value is from 0 ohm to 300 ohm .

Mark

[resonanceman]

Oh and notice that if you want more, just add more inductors IN SERIES and the pulses going through one will go trough them all. (This is the most important thing I learned with my multiple secondaries. John saw the same thing and applied it differently...cool.)

Jeanna

That part  of the video was very close to what I was doing  with my feedback/ flyback  experments ......
I agree that  you can  just add more   if you want more output power up to  a point .......then  you start choking the circuit.

Back then  I  was thinking more  of flyback than i would now.
I used mostly  JT  coils  and at first  I always hooked  up the  secondarys  in series with the load....... I did this  to try to make  the greatest  flyback  pulses .......I think today I  would  always  hook then  up  with the primarys .......to prevent  the choking effect.


gary

[xee2]

@ Mk1

Is this correct? You are lighting a filament bulb from a pickup coil that is only connected to the bulb and only using a 1.5 volt battery? Amazing.