Joule Thief

[Pirate88179]

Jeanna:

I have been testing, thanks to your input.  I agree with Mark only because when I made my collector adjustments, I saw that I had to adjust my vr.  When I started with 13 turns on the collector, 25 ohms was perfect on the vr.  Then, I reduced it turn by turn and the light got brighter and brighter but, I had to adjust to 45 ohms for the best output.  Now I am down to 5 turns and the light is good and bright but, get this, I am back to 25 ohms on the vr!!! (Plus I added that very strong neo)

I see your point, and Xee2's as well.  We can't go about changing more than one parameter at a time if we are going to fully understand these circuits.  So, with that thought in mind, I agree with both of you.

I do want to add that my tests are not valid for comparison as I have 2 toroids stacked together.  I am sure this changes a thing or two.  My next circuit will be with a single large toroid and I will get better measurements as well.

One thing Jim helped me with is that when I could not get a good scope shot of what was going on in my Jeanna Light circuit, he said that maybe my freq. was above what my scope could handle.  Since it is lower now, I will try again.

Bill

[innovation_station]

this is a pic for everyone ....  my google glasses ... lol

notice the core that i will make a jt ... it is a split feroite core .. i will try gold mines ...  i will also sub from MANY PRE WOUND CORES ..  might even pull out the tuned caps for the coils lol


see how it goes ... come on now i have 1000's vhf tuned cap and coil combos for 5mhz - 1ghz ... lol

1kv too lol  i have a few cascade block locks ... so i could go 1 million volt if i wanted from a aa ...  i dont see why you cant ... 

with the blocking cap cascade  it fills  to desired runing voltage and only looses 5% per push ...  so this means it takes only 5% to replenish ...  and you still have the runing voltage and amparage of choise ... so basically the cascade is only charged the first time .. then only last cap drains .. thus you only flick it it is full agin ... 

smile and if you play that game be wize ...  1 bite could be all you get ..... !



ist!

last pic just cuz kool wasent kool enough ....

btw my wjt transformer unit off the aa recharge side does charge 12vdc gels and no voltage drop ...
i turned it off a while ago ...  voltage has not leaked out ...   i used a 3vdc supply on it tho ...  the higher in charge the battery gets  the higher the freq of my coil   i hear it play a tune for me as it charges ...  so a 2 buck solar a ubc this unit ... AND CHARGE ALL THE CAR BATTERIES YOU WANT FOR EVER FOR FREE...  DUH!  LOL  THE MORE I ADD  THE FASTER IT RUNS ... LOL

SAME SAME ... 

; )

ohoohhhohhhhh   looks like santa needs to fill up his cup ...  lol   

im building 12vdc battery charger boards ...  basic  i on it right now ... 

i will include all parts and materials

if you dont want to wind a J COIL OR A TRANSFORMER  i will provide the part number of the

transformer im useing ... buy it pre wound!

thank you!

[resonanceman]

this is a pic for everyone ....  my google glasses ... lol

notice the core that i will make a jt ... it is a split feroite core .. i will try gold mines ...  i will also sub from MANY PRE WOUND CORES ..  might even pull out the tuned caps for the coils lol


see how it goes ... come on now i have 1000's vhf tuned cap and coil combos for 5mhz - 1ghz ... lol

1kv too lol  i have a few cascade block locks ... so i could go 1 million volt if i wanted from a aa ...  i dont see why you cant ... 

with the blocking cap cascade  it fills  to desired runing voltage and only looses 5% per push ...  so this means it takes only 5% to replenish ...  and you still have the runing voltage and amparage of choise ... so basically the cascade is only charged the first time .. then only last cap drains .. thus you only flick it it is full agin ... 

smile and if you play that game be wize ...  1 bite could be all you get ..... !



ist!

last pic just cuz kool wasent kool enough ....

IST

WHat  direction  are  the poles on your magnets

I have been planning an experment  that might be similar

I was  going to stick 2 magnets on on  toroid 
one  magnet  was to have the north  pole against  the  toroid  the other magnet would  have the  south pole  touching

I would  add another  toroid  to the ends of  the magnets 
A primary  would  go  in the original  coils .......... secondarys  would go on the  other  toroids

There might  need to be a few winds over the magnet to make  sure  the  flux flows properly

The  test is to see if  magnetic flux  has polarity
If it does ........ I should see some degree  of  rectification across  the secondarys

gary

[innovation_station]

merry christmas gary im missing ya!


we need to figure out what we need to block the mag flux on top of the neo ... then just use the neo flux ... and only use the transistor to block neo flux .. and allow fast flow through of neo flux upon reconnect!


cant wate to see your work bro !


all the best !

H

[jadaro2600]

i was gonna make this post earlyer but i for got but j's words triggered it agin ...  \


ok  j i do agree ...  transistor deturmans ma draw ...  that is clear with my toys too
i think what may need to be done  is match a pulse coil with ma draw...  kinda like impeidance matching ..  4 ohm amp 4 ohm speeker!  ya know what i mean ?

so if transistor draws 20ma  you want a coil that only handles 20ma at any freq...   

just another thought ...    maybe use a 12vdc relay coil ...  i may try that in a bit ...  if it was a bifilar coil  i would find a feroite bar and 2 week magnets and do the KOOLERIZATION TO IT ...

it would look like a pair of glasses for the eyes...  lol

ist!

http://liberty92.files.wordpress.com/2008/02/smaller-anders-with-google-glasses.jpg

lol

google glasses !

@all,

I was thinking of using a mosfet, then I wondered how I would control the voltage and thus the ON position.. as would be done with a transistor, then I wonder how much voltage is ACTUALLY getting to the base of the transistor on account of the flyback.

Does anyone know what's going on with this area between the initial part of the circuit and the base ...doesn't this voltage spike during flyback beyond the normal voltage of the input?  Isn't this reasonable to assume; as a result, isn't this the reason we can put 10k of resistance prior to the base and still have it turn on?

I wonder these things because I want to use a mosfet, and do away with the current which is leaking from base to emitter.