Joule Thief

[Mk1]

@xee2

Dose the circuit consume less when the primary is in resonance ?

If yes then its a good thing , on step at a time .

Could that type of circuit have many secondaries , now those coil did not even have the same gauge , that may be where the mass to mass coil regardless of the turn ratio , comes in .

There are many ways to design things , some have to be more efficient,
but concerning the ou claims are made from the Grand master him self Stefan in the comments , so i guess he would like to read those and comment , well ...


Also you say its like a cap , then i think this is good , humm high freq turns into a cap , that we ca use , thanks again !

 
@Altrez


Nice work there , so i see a dummy type mode , so tell us more on the small toroid you use .

Mark

[xee2]

@ Mk1

I am not sure just which circuits you are talking about. But, one parallel tuned circuit can couple to any number of other parallel tuned circuits. The power is divided like mutually coupled coils. If you are as old as me, you may remember tube radios had IF transformers which were just a tuned resonant parallel circuit at the output of one amp coupling to the tuned parallel resonant circuit at the input of the next amp. Millions of these were made and none of them were ever found to be OU.

[Mk1]

@xee2

The circuit in question is the one on the video with 2 resonant tuned coil .

I am interested in knowing how the resonant coil could be used , like in the following drawing.

[xee2]

@ Mk1

I am interested in knowing how the resonant coil could be used , like in the following drawing.

He says in video that current draw from generator is higher when out of resonance and that is also the case in my example.

I have no idea how you might use resonance in the circuit you posted.

[resonanceman]

@Resonanceman
Thankyou for this extra info.

I thought you was having trouble with just 1 LED, thats why I put forward a quick fix suggestion.
I went and took a look at the web address site, it is a very big LED array isn't it.

jim

Jim

I would not say that it is really big
It has  48 LEDs   


I am not sure why you  were thinking  I was having  trouble lighting  just one LED
I am having problems because I am  going my own way,   following my own intuition .

I have tons of stuff I want to   try ........I just can't   see any way to get some of them done using  toroids   .......so I am   learning about non toroid JTs
One of my LM coils   will produce 350V  without  load
Driving my 60 LED array  it  reads  between 30  and 50 V
The   voltage   of the original  circuit  of the  light I  got it from was  83  V 

I have not found  the  right  balance with  the LM coils ....... 
I  still have lots of stuff to try  to get them up to speed.


On another subject .......  I  tried    to  build a Jesus JT on a circuit  board .
I want to try a one or 2 of them on real life stuff  ......like  charging  other batterys  .... My first  attempt didn't  work ......now I see that I put the second set of  diodes in backwards . ..... I don't think I will   get   them changed tonight .......maybe tomorow .




It is no problem  getting it to charge ....but  it does seem to have a problem  staying in charge mode .
Last night  when I left    I had been charging a battery .
When I started charging it  it was .640 V      It was .960  when I checked it today .  .......  it had stopped charging  .   I  readjusted the pot and it started charging again .   


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Today  I noticed  something .
I had  a 1uF  cap  in  a regular  JT  (MK2 with a small secondary )
I also  have  3 of  my LM  coils  hooked to the   secondary .
2 of the LMs have there primarys  in series with the  original  JTs secondary.
The other LM  has  I made  to create some  flyback  and  divide  the   output into  2 different   outputs . 
I   connected  the 2 winding of that   coil  in  parallel   Like this it  just happens to have enough inductance to function as a load for the circuit .
This  coil also has  a short  winding on it  that I used  for feed back
I  used  the  secondarys  of  both other  coils for  feedback to source ..
I used one diode  for each feedback loop


I hope that is enough about  the  hardware .

I had checked  a couple   of things   with this   JT /coil  setup
The last thing I checked was  higher capacitance .  .......so I had  a 1uF cap in the tank
I was typing   and  it flashed  every once in a while .
I thought I was wiggeling   a loose connection .......but it kept flashing   while I was reading posts .
maybe once every 2 or 3 seconds .
Then  I  turned the meter on  my  battery voltage back on.
The  voltage had gone up .

I watched it ........ the  voltage dropped  as the LED came on .
then  the LED  would dim then  go out .
Then the  battery  voltage would start  to rise .
I added more caps .. I am not sure if I am getting more power with more caps .... but  time  will tell
ANyway ...... the  voltage  drops   around .05V  each time the  LED lights up .
AFTER  the LED goes out  the  battery  voltage  rises quickly  then slows   
The last .01  is slower .
Every  few pulses it  reads .01 higher than the previous  reading  just  before the LED lights up  again .
The  charging  seems to be slowing .......it is now taking  more like 6 pulses  before it goes up .01 V


As  I was  typing  it  changed  modes .......now ....  it looks like the   voltage is high enough for the  LED to stay on  longer ...... it comes  on  and  stays on  a couple of seconds .   The  voltage does not  go up  when the  LED is on .
It seems to me that this  is a way to  limit  the   max charge .

Raising  the  resistance  got the number of  pulses  before  a rise in voltage  back down again . 

I am thinking that if  a resistor is selected to  just  start to light the LED   .....then   a discharged  battery is  put in its place it should  charge strongly  until the LED comes on steady . 
It seems clear to me that  the  battery is slowly  charging  the  cap   until  the base  reached  its turn on point .......the cap is then discharged  .....and  the cycle starts over .


gary