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Author Topic: Joule Thief  (Read 6372412 times)

jadaro2600

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Re: Jule Thief
« Reply #12825 on: February 26, 2010, 06:58:40 PM »
Hi.I discovered a strange modification which significantly reduces the current draw on both my Simple sec exciter and also Slayers exciter and may be worth trying on a joulethief.This is what i did.I added an extra transistor and connected the collector of the new transistor to the base of the original and the base of the new transistor to the originals emmiter and left the new transistors emitter floating.The current draw drops by over half and output is not realy effected.Whats more is you can keep adding transistors like so and the current draw comes down with each addition.If anyone has any thoughts on why this floating transistor is having this effect i would be really interested.
I have also had a think about the wireless transmision aspect of these circuits and come up with an updated simple sec reciever circuit but it works equally well with slayers exciter.
I am getting an led to light at over 2 meters distance.
I also did an experiment with slayers exciter and got it lighting an led on a vinegar battery.
Here is a vid of todays experiments and circuit diagrams of power saving mods and wireless reciever circuit update.Jonny
http://www.youtube.com/watch?v=RZWuRL4Nto8

@electricme.Hi Jim.Thanks for the hello and hope everything is good ai your neck of the woods.Jonny

Interesting.  That part of the transistors acts as a diode; try replacing this transistor with a diode ( ground bar to base ).  See if this produces the same results.  I know that you've got the base locked up on those; the diode would thus appear to be installed incorrectly.

You may even try a low voltage zener or something.  Never know, something crazy might happen.

guruji

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Re: Jule Thief
« Reply #12826 on: February 26, 2010, 09:07:23 PM »
@all

Koolers circuit works great!  Here are a few pic and a video is soon to follow.

1.5v
Draw .07ma
7 LEDS
Transistor 2N3904

Hi stprue today I did this circuit but it was consuming about 0.25ma not 0.07ma. How did you acquire those results that you've said in consumption? Ok I had about nine leds and they lit very dim. Is it maybe I should use 470k pot cause I used a 220k?
Anyway thanks to kooler for the circuit.

xee2

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Re: Jule Thief
« Reply #12827 on: February 26, 2010, 09:08:29 PM »
@ jonnydavro

I am getting an led to light at over 2 meters distance.

Great progress. Thanks for sharing your results.

stprue

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Re: Jule Thief
« Reply #12828 on: February 26, 2010, 10:03:59 PM »
Hi stprue today I did this circuit but it was consuming about 0.25ma not 0.07ma. How did you acquire those results that you've said in consumption? Ok I had about nine leds and they lit very dim. Is it maybe I should use 470k pot cause I used a 220k?
Anyway thanks to kooler for the circuit.
I'm using different conponents!  Not exactly like Koolers, I had to work with what I have.  Don't forget that Kooler sets his to comsume that much so he could change it if he wanted to.

@Jonny

Fantastic progress, that circuit is so cool  :o

guruji

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Re: Jule Thief
« Reply #12829 on: February 26, 2010, 10:08:34 PM »
Quote from: stprue link=topic=6123.msg230367#msg230367 A=1267218239
I'm using different conponents!  Not exactly like Koolers, I had to work with what I have.  Don't forget that Kooler sets his to comsume that much so he could change it if he wanted to.

@Jonny

Fantastic progress, that circuit is so cool  :o

Hi Stprue thanks for response I used the 2n3904 too not as kooler maybe I should use a thinner or thicker gauge coil.
I was seeing your board photo and you put three caps with the transistor what are those?
Thanks

jonnydavro

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Re: Jule Thief
« Reply #12830 on: February 26, 2010, 10:19:35 PM »
@Xee2 and stprue.Many thanks.
@Jadaro.Thanks for the reply.The first thing i did when i found this effect was think like you and swapped in a diode and the effect does not happen,only with a transistor so there is something crazy going on but what?Jonny

stprue

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Re: Jule Thief
« Reply #12831 on: February 26, 2010, 11:28:36 PM »
Hi Stprue thanks for response I used the 2n3904 too not as kooler maybe I should use a thinner or thicker gauge coil.
I was seeing your board photo and you put three caps with the transistor what are those?
Thanks

Those caps were 221 but a 500v  mica works better.  Just try stuff!

P.S. the toroide was a 3.38" that I was using...right now I'm testing with a 1' goldmine  same wire guage

kooler

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Re: Jule Thief
« Reply #12832 on: February 27, 2010, 01:06:42 AM »
hey guys
i just use the mps2222a because it will run with 0.2 volts.. don't know the min current..
the inductor is not needed.. you only need it if you have problems adjusting the pot..
i have had a tip31c run at 0.16 ma..
i try doing some windings more turns on the cap side..

robbie

jadaro2600

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Re: Jule Thief
« Reply #12833 on: February 27, 2010, 02:35:38 AM »
Hi stprue today I did this circuit but it was consuming about 0.25ma not 0.07ma. How did you acquire those results that you've said in consumption? Ok I had about nine leds and they lit very dim. Is it maybe I should use 470k pot cause I used a 220k?
Anyway thanks to kooler for the circuit.

@Jadaro.Thanks for the reply.The first thing i did when i found this effect was think like you and swapped in a diode and the effect does not happen,only with a transistor so there is something crazy going on but what?Jonny

It may be advisable to measure the ohmic resistance of the path and report / record the results.

Transistors have junction capacitance; cheap ones will inter operate their Collector and Emitter, one being operationally indistinguishable from the other.

I found a chilliqueen setup in which if I simply let a capacitor hook up off the base ( of the PNP ) connected to nothing, the circuit would function.  Diagram here: http://www.overunity.com/index.php?topic=8564.msg219117#msg219117 already; this is similar to the capacitive coupling of the metal pans and such, just on a smaller scale.

innovation_station

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Re: Jule Thief
« Reply #12834 on: February 27, 2010, 06:31:45 AM »
8 JT  cap charger board ... 

: )


ist!

http://www.youtube.com/watch?v=MpkByZZVfvE

freepow

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Re: Jule Thief
« Reply #12835 on: February 28, 2010, 12:05:13 PM »
Hi everyone

I am looking for a 3 inch good toroid [/]so I can make a 1000-1500 volt joule thief, anyone point me in the right direction please !!!

IotaYodi

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Re: Jule Thief
« Reply #12836 on: February 28, 2010, 01:49:51 PM »
Heres a 5 inch od 3 inch id. They may have something closer to what you need.

http://www.electronicsurplus.com/ItemView.aspx?ItemID=140165

innovation_station

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Re: Jule Thief
« Reply #12837 on: February 28, 2010, 02:51:29 PM »
yes well another wild sun day and my kids are over ... 

: )

its even wilder than usual ...   considering i got my HELTH PAC half uncovered.. ; )

i used to think i needed large cores ...  but since they only sell them in the US and they want an arm a leg and an ear for 1 ... 

I TOLD THEM TO KEEP THERE GARBAGE ...

: )

TRY A 1" GOLD MINE ...  : )

ALI MADE YOU A COIL!    LMFAO! 

TAKE AS MANY GM CORES AS YOU LIKE ...  WRAP A WIRE ROUND THEM ...

DONE DEAL ..

IST!

you then use my jt board to charge the 8 caps that will self fire to the high volt  primary  rappid fire ...

8 caps dumped 1 primary ....

: )

silly humans! 

maybe 1 day they get it ...

YEA I KICK MY FEET UP AND LAUGH AT GADGET !   AS HE SAYS I NEED TO USE MY W CORE ....

no  i do not !    lol 

what is the result if i have 1 wire 1 turn  around 30 cores ...  each core has a secondary on it ...  and input voltage ..  some where around 100vdc to 400vdc ...

yea i thought so ..........

: )

come on humans ....  tell me it aint my work ... 


: )

that is why it exisits in my mind ..  NOT YOURS ...  RIGHT ?~

« Last Edit: February 28, 2010, 03:49:31 PM by innovation_station »

xee2

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Re: Jule Thief
« Reply #12838 on: March 01, 2010, 06:33:34 AM »
@ slayer007

I tried your basic circuit and it works great. The LED on the phone charger looks bright so this is probably sucking power, but the tube is bright.

EDIT: terminal strip = Radio Shack #274-680 12-position mini European style (cut off)
« Last Edit: March 01, 2010, 07:41:08 AM by xee2 »

Pirate88179

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Re: Jule Thief
« Reply #12839 on: March 01, 2010, 06:39:16 AM »
Xee2:

Have I been missing something with these circuits?  Does that tube really light with just one wire and you don't have to be touching it?  If it does, try a bigger tube and I'll bet it lights even brighter on the same power.

Bill