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Author Topic: Fuji joule thief full instructions video and pics.  (Read 89581 times)

engpjk

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Re: Fuji joule thief full instructions video and pics.
« Reply #15 on: September 05, 2012, 03:29:48 PM »
Hi Gadgetmall,

Thank you for your kind response and suggestions and congratulations on your very impressive 38-hour lighting period!

I have tried shorting out the diode and using the capacitor connections for output (and many other options) with zero response other than the red diode light coming on every time.  I bought two Fuji cameras together from the same supplier and I have just noticed that the boards are marked differently, one being A60 and the other A07.  Examining them fairly carefully, I can see no difference between the pcbs.

I have put a photograph of the top of the board at http://www.mediafire.com/?bxj459iiqg4im8w and one of the underside of the board at http://www.mediafire.com/?nu4wnnyvtwnaavg and if you wouldn't mind, would you please take a look at them as with your considerable experience working with these boards, you may be able to spot whatever mistake I must be making.  These boards are powered by a 1.5V AAA alkaline battery with the plus on the extended copper arm, which appears to be the reverse of the polarity of some of the other boards mentioned on the web.

Thanks in advance,

Patrick


gadgetmall

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Re: Fuji Jellybean jar contest
« Reply #16 on: September 05, 2012, 03:55:19 PM »
GIVEAWAY . Guess how many Fuji's there are in this box and i'll send you one free-shipping included ..I can mod it for you if ask .

It's the Fuji -Jellybean jar Contest !!(Box)

there is also some Kodaks in there as well but they don't count !
Must be exact number of Fuji Boards .

I have the number written down as of today and passed along to a Trustworthy friend here . and to unclutter this thread you can PM me with your answer.

9/5/12
Contest ends 9/28/12 and the winners will be announced.

Below that picture is one of the mods i do on them .
Gadgetmall
« Last Edit: September 05, 2012, 05:12:35 PM by gadgetmall »

gadgetmall

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Re: Fuji joule thief full instructions video and pics.
« Reply #17 on: September 05, 2012, 04:29:09 PM »
Hi Gadgetmall,

Thank you for your kind response and suggestions and congratulations on your very impressive 38-hour lighting period!

I have tried shorting out the diode and using the capacitor connections for output (and many other options) with zero response other than the red diode light coming on every time.  I bought two Fuji cameras together from the same supplier and I have just noticed that the boards are marked differently, one being A60 and the other A07.  Examining them fairly carefully, I can see no difference between the pcbs.

I have put a photograph of the top of the board at http://www.mediafire.com/?bxj459iiqg4im8w and one of the underside of the board at http://www.mediafire.com/?nu4wnnyvtwnaavg and if you wouldn't mind, would you please take a look at them as with your considerable experience working with these boards, you may be able to spot whatever mistake I must be making.  These boards are powered by a 1.5V AAA alkaline battery with the plus on the extended copper arm, which appears to be the reverse of the polarity of some of the other boards mentioned on the web.

Thanks in advance,

Patrick

I will show you in a little while with your pictures . This is an aaa 4th gen board .Seen them with aa same board also . 4th gen. they work good.smaller modified CFLS work real good but you can light 40 watt one too .you have to close a copper switch on bottom of this board with solder OR add wires with an on off switch if you want to put in in a case.A Strogn magnet sometimes near a FL tube helps get it lit and also Warming the cfl with a hair dryer helps also .
WARNING :discharge The Cap with a screwdriver before attempting anything !! Do not run this mod with more than 1.5 volts or you risk blowing your transistor . The Pot has a wiper and two outside legs . use wiper and one outside leg. for further tuning you can try different disk capacitors across the outside legs . also one way of the pot twisted is a direct short of the bias voltage and is wide open full blast so use that only to start a stubborn light then back it off a bit.

Note : If anyone else has a camera board they can get hi-res pictures of i can help you mod it. need front and back
. I give The author permission to include this in his DIY instructions as long as credit goes to those who contributed AND the site where you got it from .
gadget

engpjk

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Re: Fuji joule thief full instructions video and pics.
« Reply #18 on: September 05, 2012, 05:01:40 PM »
Hi Gadgetmall,

Thank you indeed for clarifying the modification procedure - I will work on it.  They sure believe in making everything tiny!

Patrick


gadgetmall

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Re: Fuji joule thief full instructions video and pics.
« Reply #19 on: September 05, 2012, 05:06:42 PM »
Hi Gadgetmall,

Thank you indeed for clarifying the modification procedure - I will work on it.  They sure believe in making everything tiny!

Patrick\


They are tiny and thank you for the clear pictures . I don't have Macro on my 8meg droid camera because it's hacked ,cloned and a different operating rom is on it .Yes i am an xcell tech also  .
this is one of the first videos i did of a fugi . it has a "kick"switch which shorts the bias resistor for a second to light a stubborn light on a low battery. purple power Neon Neon ..

http://youtu.be/iINoVWbdBpk
Gadget
« Last Edit: September 05, 2012, 08:54:47 PM by gadgetmall »

engpjk

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Re: Fuji joule thief full instructions video and pics.
« Reply #20 on: September 08, 2012, 09:53:16 PM »
Hi Gadgetmall,

My construction is now well advanced.  One quick query if I may, what is the function of the capacitor straddling the feedback pot?  Is it to modify the oscillation frequency or does it have a different purpose?

Thanks in advance,

Patrick


gadgetmall

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Re: Fuji joule thief full instructions video and pics.
« Reply #21 on: September 08, 2012, 11:44:48 PM »
Hi Gadgetmall,

My construction is now well advanced.  One quick query if I may, what is the function of the capacitor straddling the feedback pot?  Is it to modify the oscillation frequency or does it have a different purpose?

Thanks in advance,

Patrick


Yes you are correct . It makes the circuit closer to resonance no matter where you adjust the pot. It Helps to reduce Current Consumption while maintaining resonance .

Sir Berman

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Re: Fuji joule thief
« Reply #22 on: September 09, 2012, 11:43:15 PM »
OK!

WOW! i finally found some good instructions at: http://www.youtube.com/watch?v=cOjze5Sgofk
Thanks for the thread guys.

The circuit board was exactly the same as the one i have.

The only problem - the light from a 13w is not that bright. (about 1/4 the total brightness)
I will look for a smaller watt bulb to see if I can get a brighter light.

I thought I saw a schematic to double the output voltage on this thread... i will have to look....
(I hope a 2N2222a or IRF510 mosfet transistor will work on it)

If any of you know how to boost the brightness of the CFL, please let me know

thanks again

Pirate88179

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Re: Fuji joule thief full instructions video and pics.
« Reply #23 on: September 10, 2012, 12:08:05 AM »
Sir:

Ditch the cfl and use a Lights of America LED edison base bulb.  You don't even have to gut it or anything...use as is and it will put out way more light than the cfl and will not break and dump mercury all over the place.  Available at Walmart and if that does not work for where you are, they can be ordered off of the net.  I think I paid like $8 US for a 2-pack.

Bill

Pirate88179

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Re: Fuji joule thief full instructions video and pics.
« Reply #24 on: September 10, 2012, 12:11:55 AM »
(http://www.lightsofamerica.com/%7E/media/2425LEDE12-LF3%20185.ashx)  Model: 2425LEDE12 - LF3 Flametip  Watts  Lumens  Color  CRI  Life
   This product can be used with the following applications: Coach lanterns and Chandeliers
Model 2425LEDE12 - LF3 is Energy effecient, ECO friendly, Mercury free and produces no Radiated heat.
    2.5W
[/c]  135   3000K   82   15,000
Hours
            (http://www.lightsofamerica.com/%7E/media/LOA%20Images/Certs/EnergyStar.ashx)                (http://www.lightsofamerica.com/images/CSA_c_us.jpg)       (http://www.lightsofamerica.com/images/buy-now.gif)

Pirate88179

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Re: Fuji Jellybean jar contest
« Reply #25 on: September 10, 2012, 12:17:00 AM »
GIVEAWAY . Guess how many Fuji's there are in this box and i'll send you one free-shipping included ..I can mod it for you if ask .

It's the Fuji -Jellybean jar Contest !!(Box)

there is also some Kodaks in there as well but they don't count !
Must be exact number of Fuji Boards .

I have the number written down as of today and passed along to a Trustworthy friend here . and to unclutter this thread you can PM me with your answer.

9/5/12
Contest ends 9/28/12 and the winners will be announced.

Below that picture is one of the mods i do on them .
Gadgetmall

There are 37 Fuji boards in that box.

Bill

gadgetmall

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Re: Fuji joule thief full instructions video and pics.
« Reply #26 on: September 10, 2012, 02:00:22 AM »
 :) Only one entry per member . Winners will be announced 9/30/2012 !

Sir Berman

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Re: Fuji joule thief full instructions video and pics.
« Reply #27 on: September 12, 2012, 06:11:05 PM »
oooh. pretty light bulb.

thanks 

by the way, i'd say there is 47 boards in that box - including the kodaks.


gadgetmall

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Re: Fuji joule thief full instructions video and pics.
« Reply #28 on: September 12, 2012, 06:58:57 PM »
Sir Berman did you get that Cfl lite? You know that cool light Pirate showed is much brighter and did you know that if you have a string of Christmas Led bulbs that little fugi will light over 400 leds !

kooler

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Re: Fuji joule thief full instructions video and pics.
« Reply #29 on: September 13, 2012, 03:53:25 AM »
61 strobe boards in the box..  :-\