Joule Thief

[crowclaw]

@ kooler
You are probably producing excessive and spurious RF energy along side the magnetic fields. It depends on how stable or unstable the circuit is!  instability gives rise to spiky waveforms which create harmonic frequencies. This is the reason why your scope and digital meters play up as they do. In your case I reckon you have certainly got something going!! These pulses will be both + & -ve and will certainly see LED's off. xee suggested a series diode, and together with Jeanna's series resistor idea will help, or as pirate does... add more LED's. Filament lamps are relatively low resistance when cold and are loading up your circuit! How about placing a multiband radio within the vicinity and tune across the bands? would be interesting to know the results. Keep up the good work all

[gadgetmall]

sorry to bother you folks with this...
but tonight i was messing with my little strobe circuit or whatever you want to call it...
well i got to pulse in the high hz now but i cant get my hand held scope with in 2 foot close to it
its like it is giving off some crazy radio that messes with electronics
it just shows 5.31 khz and 80 volts with a half sine wave pos...
i'm using a 0.1 mfd cap now and it sounds kool if you run it thru a 1:1 toroid
it sounds like a hv transformer in a substation
my toroid was showing like 12 volts thru a bridge but there was alot sparks hooking a load to it
i reduced it down to 5 volts and thought... i will linked 6 of those 265000 mcd 100ma leds
up to it and boom there went 15 $.. so i cussed for 10 mins and walked away

any suggestions

oh .. if you guys try to build this dont touch the output...i bump my arm into it the other night
and got some burns..hahahaha

Oh we know about Led burnouts . when you hit over 50 of the Expensive  .5 watt 5 chip ones then you just cry for 10 mins Blowed a dang many of them and still do . S**T happens .
Gadget 

[innovation_station]

S*!*T happens .
Gadget

AS IT IS RIGHT NOW...   NOTICE HOW THE SITE WENT DOWN ..... 

YEA ANYHOW ...

GADGET CARE TO SHARE ANY EXPAIRMENTS YOU HAVE DONE WITH THE ULTRA CAPS .... OR BILL .. IF YOUR NOT TOO BUSY ... JUST TO PREP ALL THE NEW COMERS MYSELF INCLUDED .. 

LOL

IST!    IM STILL LAUGHING AT WILLS COMMENT ... LOL ..  HE  HAS NOT COME BACK ... LOL 

[resonanceman]

I have not had  much time to  work on building anything lately
I did  learn something today that might  be helpful for the people  working on ISTs  project.
I have been working on  how to get to the self  charging state  using  less parts .
My first attempts took  around  9 toroids with most of them hooked up  for both  flyback and feedback .

Before if  I hooked  a large winding   up for feedback ( or  a LARGE coil )   the whole  JT would  usually   shut down .
Today  I tried  putting  a cap in series  with  the coil
The cap  limits the  amount of current that   is fed back .

I found  that  I can regulate the  voltage   in the primary  circuit to some extent by  changing   the  cap limiting the current

I am now  running  a JT made  from a flyback transformer core.
I am  powering  2 LED arrays at full brightness  ......one of them is  60 LEDs the other 90 LEDs
According to  the manufacturer  both  arrays  use  5 watts ( with the original  circuits )

I  have one  extra winding on the  core that is about the same  size as the windings  lighting  the arrays  ( each array   is on its own  winding )
I  have one other  coil  that  is  being used for  feedback .

I am sure that  if I added another  winding to the  core  and limited it  with a cap  I could  run  these lights  and  charge the battery with no external  coils .....other than the JT  itself .   


This  technique should  be easy  with ISTs  design .
WIth his  plan of  winding  quite a few wires of the same length   together  as  a secondary  is ideal for this .
Just  use as many of the wires   as you need  for feedback ........the  power from all  the rest of the  wires is FREE

I am  powering   my JT  with  a 12 V battery .
The  battery   had been   powering the  JT for a while  before  I started this setup .
It started  at 10.95 V   It is now 11.13  after  2 hours 
The  output of my feedback  winding  has gone  up from 245 V  to 249 V
I  am limiting   the  feedback  current  with  3  25pF caps  in parrallel
I am feeding   the  power back to  the cap on my  Jesus charger .


gary

[resonanceman]

I have not had  much time to  work on building anything lately
I did  learn something today that might  be helpful for the people  working on ISTs  project.
I have been working on  how to get to the self  charging state  using  less parts .
My first attempts took  around  9 toroids with most of them hooked up  for both  flyback and feedback .

Before if  I hooked  a large winding   up for feedback ( or  a LARGE coil )   the whole  JT would  usually   shut down .
Today  I tried  putting  a cap in series  with  the coil
The cap  limits the  amount of current that   is fed back .

I found  that  I can regulate the  voltage   in the primary  circuit to some extent by  changing   the  cap limiting the current

I am now  running  a JT made  from a flyback transformer core.
I am  powering  2 LED arrays at full brightness  ......one of them is  60 LEDs the other 90 LEDs
According to  the manufacturer  both  arrays  use  5 watts ( with the original  circuits )

I  have one  extra winding on the  core that is about the same  size as the windings  lighting  the arrays  ( each array   is on its own  winding )
I  have one other  coil  that  is  being used for  feedback .

I am sure that  if I added another  winding to the  core  and limited it  with a cap  I could  run  these lights  and  charge the battery with no external  coils .....other than the JT  itself .   


This  technique should  be easy  with ISTs  design .
WIth his  plan of  winding  quite a few wires of the same length   together  as  a secondary  is ideal for this .
Just  use as many of the wires   as you need  for feedback ........the  power from all  the rest of the  wires is FREE

I am  powering   my JT  with  a 12 V battery .
The  battery   had been   powering the  JT for a while  before  I started this setup .
It started  at 10.95 V   It is now 11.13  after  2 hours 
The  output of my feedback  winding  has gone  up from 245 V  to 249 V
I  am limiting   the  feedback  current  with  3  25pF caps  in parrallel
I am feeding   the  power back to  the cap on my  Jesus charger .


gary

As  the battery voltage  goes up  this ciircuit  is getting  stronger.
In  about a half hour   the   battery voltage  went from 11.08 to 11.12
The  voltage  of my feedback coil  jumped to 399 V
The  feedback must be  only using  the spikes.
I hooked up my cheap DMM  across   the cap in  my Jesus charger .
On  AC it only  reads 2 mV ...... DC less  than 1mV
I would  try  my  better meter across  the feedback  cap ..........but I do not want to  touch anything for a while .


gary