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Author Topic: Joule Thief  (Read 4622381 times)

Offline Pirate88179

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Re: Jule Thief
« Reply #15285 on: October 24, 2011, 03:17:26 AM »
  Thanks Bill: 
   I've never seen the green toroids, but I have used the orange, and smaller black ones found in the cfls. They seam to work ok. As well as many different yellow pc types. Yes, they all work, I guess it all depends on what anyone wants to do. But, as I have used them, I still recommend not to use the iron powder ones even though they do work to a usable degree. I had a bunch of the yellow toroids around the house, so... I could not resist.
Pictures below of are iron powder cores, regular Jtc, and they are still working two years later.  Not bad for the price... Zilch!
                                                                                  NickZ

Nick:

You sure can't beat zilch, ha ha.  We all know that JT's can be built from many materials but I guess I am just used to ferrites.  I have never seen orange, that is a new one on me.  But if you can make them work, more power to you.

Bill

Free Energy | searching for free energy and discussing free energy

Re: Jule Thief
« Reply #15285 on: October 24, 2011, 03:17:26 AM »

Offline NickZ

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Re: Jule Thief
« Reply #15286 on: October 24, 2011, 06:08:18 AM »
  It was actually Jeanna that had mentioned about the smaller orange toroids cores from the cfls, that's where I had heard about them and decided to give them a try also, as I had some dead cfls around.  Who knows what they are actually are made of,  but they seam to work, and were free.  So, for people living where you can't get the ferrite cores, the small toroids from from the cfls do work, and some of them may even be ferrite.  And may be of higher permability than the yellow ones from the pc power supplies.

Offline Flux4Energizer

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Re: Jule Thief
« Reply #15287 on: November 01, 2011, 08:43:34 PM »
Hello guys,

I just uploaded my latest project.
A Joule Thief Battery Charger  ;D
I hope you guys can give me tips and maybe some ideas on how to further improve the circuit.
My last joule thief project was over a year ago and this circuit is an improvement of the circuit i posted 2 years ago.

The video is on youtube (here's the link): http://www.youtube.com/watch?v=7aof3acSpfc

The circuit is very simple, but working very good.
Well hope to hear your replies and ideas and/or tips.

Regards,
Flux

Free Energy | searching for free energy and discussing free energy

Re: Jule Thief
« Reply #15287 on: November 01, 2011, 08:43:34 PM »
Sponsored links:




Offline Ganzha

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Re: Jule Thief
« Reply #15288 on: November 06, 2011, 04:45:11 AM »
For information only - inventor of Jule Tiff is inventor from former UssR - this schematics was publised since 1970 in russians amateur zines!!!! Look carefully!

Offline Pirate88179

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Re: Jule Thief
« Reply #15289 on: November 06, 2011, 06:22:26 AM »
The inventor of the Joule Thief is Big Clive,  He also named the circuit.

Bill

Free Energy | searching for free energy and discussing free energy

Re: Jule Thief
« Reply #15289 on: November 06, 2011, 06:22:26 AM »
Sponsored links:




Offline Ganzha

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Re: Jule Thief
« Reply #15290 on: November 06, 2011, 09:00:03 AM »
The page I have published from 1985 inventor of this devices is Maksimaztchuk from USSR

Offline nul-points

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Re: Jule Thief
« Reply #15291 on: November 06, 2011, 03:26:54 PM »
LOL @ this pi$$ing contest about who 'invented' the Joule Thief !


[the 'Joule Thief' is a regular 'Blocking Oscillator' configuration, as used in Tube circuits for many 10s of years (ie. well before the 1950s), one variant of which has been converted to Transistor operation in 'Common Emitter' mode]

np


http://docsfreelunch.blogspot.com
 

Free Energy | searching for free energy and discussing free energy

Re: Jule Thief
« Reply #15291 on: November 06, 2011, 03:26:54 PM »
Sponsored links:




Offline Ganzha

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Re: Jule Thief
« Reply #15292 on: November 06, 2011, 06:33:48 PM »
LOL @ this pi$$ing contest about who 'invented' the Joule Thief !


[the 'Joule Thief' is a regular 'Blocking Oscillator' configuration, as used in Tube circuits for many 10s of years (ie. well before the 1950s), one variant of which has been converted to Transistor operation in 'Common Emitter' mode]

np


http://docsfreelunch.blogspot.com
Shematics from Maksimatchuck is not for Tube! this is for Transistors only! This is not Bloking Generator! It is quite obvious! Check it! This shematics works not as normal Bloking oscillator - that way U could use two coils without any ferrire or metal cores! Think!
Here is typical Schematic of Bloking Osc. ß this is very differetnt!
« Last Edit: November 06, 2011, 07:06:25 PM by Ganzha »

Offline xee2

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Re: Jule Thief
« Reply #15293 on: November 06, 2011, 09:36:42 PM »
Some tests on the 120 VAC LED bulb LaserSaber is using:
video >>> http://www.youtube.com/watch?v=6H6wc5JLL28


Free Energy | searching for free energy and discussing free energy

Re: Jule Thief
« Reply #15293 on: November 06, 2011, 09:36:42 PM »
3D Solar Panels

Offline nul-points

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Re: Jule Thief
« Reply #15294 on: November 06, 2011, 09:39:58 PM »

Shematics from Maksimatchuck is not for Tube! this is for Transistors only! This is not Bloking Generator! It is quite obvious! Check it! This shematics works not as normal Bloking oscillator - that way U could use two coils without any ferrire or metal cores! Think!
Here is typical Schematic of Bloking Osc. ß this is very differetnt!

... one '!' symbol per sentence - can i have some of what you're smoking, Ganzha?  ;)

Offline Groundloop

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Re: Jule Thief
« Reply #15295 on: November 07, 2011, 05:03:14 PM »
Hi,

Here is a little LED driver that I have tested.

It can be run from a 1,5 volt battery. Maximum
input 9 volt, but the Q1 transistor will be warm.

Bigger coil and power NPN on heatsink (Q1)
for higher input voltages and higher loads.

GL.


Free Energy | searching for free energy and discussing free energy

Re: Jule Thief
« Reply #15295 on: November 07, 2011, 05:03:14 PM »
3D Solar Panels

Offline Pirate88179

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Re: Jule Thief
« Reply #15296 on: November 08, 2011, 08:03:09 AM »
Groundloop:

Very nice, well done.

Bill

Offline ALVARO_CS

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Re: Jule Thief
« Reply #15297 on: November 10, 2011, 06:12:21 PM »
May it be useful when one has a poor access to big sized cores, or cores with special shapes.
I made a cube in cardboard (2mm) ext. dimensions 3,3x3,3x3,3 cm, and wired it bifilar 11 turns in the three directions (total 33 turns). Aluminum wire from an old transformer 0,8 mm.
Epoxied the interior, and filled with ferrofluid.
Used successfully in a JT (thanks @ Gadget)
It gives induction in all directions, so I`m planning to insert it in a bigger cube, immerse it in ferrofl. Wire another coil over it, and see if  it can amplify the same way as Tesla transformer is supposed to. (related too with the Gabriel device.)
As always, I have a great difficulties in having reliable measurements. (no scope) and I´ve become an expert in salvaging all kinds of discarded electronics he he  ;D
 
Cheers

Offline Groundloop

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Re: Jule Thief
« Reply #15298 on: November 11, 2011, 10:41:46 AM »
Hi,

This is a LED lamp driver that I'm researching now.
The documentation can be found here: http://home.no/ufoufoufoufo/FMR.rar

Groundloop.
« Last Edit: November 11, 2011, 02:21:45 PM by Groundloop »

Offline Groundloop

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Re: Jule Thief
« Reply #15299 on: November 11, 2011, 11:20:04 AM »
Hi,

This is the RF frequency scan from the coils.
The green graph is background RF and the
red graph is from the coils. As you can see
the RF radiation is very small. At 1 meter
away from the coil the RF is very low.
There is no audio noise from the coils.

I get almost full light output from the 1,8 Watt
led bulb at a input of 2,7 Volt @ 0,69 Amp.
(1,863 Watt). So there is little loss in this circuit.

If you want to run this circuit from 12 Volt then
add a 470 Ohm 5 Watt resistor in series with
the transistor base pin.

The transistor shown in the circuit drawing will
not survive higher voltages than 12 Volt. The
inductive spikes generated is so high that the
transistor will self destruct at higher voltages.

I tested a base resistor (variable 5K) and the
transistor did blow at 29 Volt input. Just want to let
you know.

I need to find a power NPN with a voltage
rating of approx. 1000 Volt.

GL.
« Last Edit: November 11, 2011, 02:24:45 PM by Groundloop »

 

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