Joule Thief

[resonanceman]

I tried to  post  a couple of pictures   last night .
They timed out then I was not even able to  get  back  here.

The first  one is my   3055 board and my jesus charger  together .


The  second  is my 3055  board, Jesus charger   and LM1  driving my 60 LED array.
This  is  without  any extra  LMs for  flyback  and feecback

gary

Edit

The  red circle  on my 3055 board is a knob  on the pot 

In the picture  if  it running
The  yellow wires  are  from the board to the coil  primarys
The  red wires are from coil secondary to the LEDs
The white  wires are to the caps in the tank circuit   ( 2   1uF )

[TheNOP]

@all,
I've thought of a variation in power recovery of CEMF  using two polarized capacitors wired end-to-end with diodes:


        |--->|---|
        |            |       
        |  +| /    |
        |---||---|
        |    | \    |
-----|            |-----
        |    \ |    |
        |---| |---|
        |    / |+   |
        |            |
        |---|<---|

the way the diodes are placed there is a constent current path from one side of the caps and the other side, the caps won't be able to charge completly.
the higher they will charge is dictated by the diodes threshole.

btw
electrolytic capacitor are polarity sensitive.
polarity here does not refer to your source polarity.
it refer to the plates of the cap.
one side can accumulate charges while the other is only suitable for getting depleted of charges.
the way they are connected in your circuit can blow them up under specific circumstances.
give them enough reverse charges and they will.

a general rule with caps and AC
if you don't use a diode in series with the cap(s), you should not use electrolytic capacitors.

[resonanceman]

I am also looking at a LUX meter to document how bright my lights are from the toroid to one that is plugged into mains.

Take care,

-Altrez

Altrez

Unless  you want to  quantify  the difference in light levels   a lux meter is  probably not needed .
Just  use your digital  camera  and take a picture with both  lights in it
The digital camera  will show you the  relative brightness of each.
It  will show you  differences in light levels to small for the   human eye to see .

gary

[jeanna]

@Gadget
@Altrez

I guess I must have missed that this was done with a "AAA type fuji circuit" - the one with the green slide switch.

I remember asking for help and getting a resounding silence, followed by someone telling me that no one had been able to get that type circuit to work. It has a smaller transformer... I made copies of the help and took off.

That was before february and my 1 month winter camp. It probably happened then or thenabouts. When I came back there were so many posts and I was needing to get back to everything and I had so many ideas for toroids...

If one of you could help Free, then I could listen in and perhaps get mine going. It is close, but I never did the part where gadget adds a pot and a cap. My only records on that are on the fuji "AA type fuji circuit".

thank you,

jeanna
edit:

Jeanna you must have miss a lot of the post i did . I have mods for all three Fuji Circuits and the aaa is brighter than the aa version . I can mod any camera Circuit to light Cfl'c here one  aaa . Jeanna if your aaa fugi is a bad transistor you can replace it with a 2n3904 or 2n2222 just make sure the legs are in the right holEs the pin out is different than a Standard fuji transistor . you can zoom in and see the mod . . replace the base resistor and short a diode . not the red one . free if you need some help let me know and i'll try to help .

OK.
I bought 2 and got 2 for free. the free ones were the AA type. All my pics etc were on fuji AA that is the circuit that Pirate had on his kitchen table (blue/white check background)
thanks for the offer to help

both of you!

@Gary,
very nice!

j

[altrez]

Altrez

Unless  you want to  quantify  the difference in light levels   a lux meter is  probably not needed .
Just  use your digital  camera  and take a picture with both  lights in it
The digital camera  will show you the  relative brightness of each.
It  will show you  differences in light levels to small for the   human eye to see .

gary

Hey Gary,

Thank you for that bit of information. I do however want to also provide concrete results with all of my experiments so that others can fallow everything I did and fully replicate.

Its the best way to help me keep track of everything With my busy life I might not have time to work on anything for weeks. So if I have a good set of notes with all the findings documented I can always go back to that point of time and resume my work.

I want to roll up all of the information I have and plus all of the great information everyone has shared into a PDF I just have not had the time. I think its all very fascinating and I have learned so much from everyone. And again I must thank jeanna for teaching me how to use a scope 

-Altrez