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Author Topic: Second Stage Joule Thief Circuits  (Read 387775 times)

Offline Groundloop

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Re: Second Stage Joule Thief Circuits
« Reply #570 on: February 07, 2010, 06:32:39 PM »
@All,

I have done a HW modification to the feed back circuit. I have added a 32KHz crystal to RB6 and RB7 pins
together with two 33pF ceramic to ground. Then I have configured the new attached software so that
the circuit uses ONLY 0,6mA as an average from the input battery. See attached drawings. One good
source for a 32KHz clock crystal is from old PC motherboards. See photo of the xtal so that you know
what to look for. I must stress that this new version 1.7 software will ONLY run if there are a 32KHz
crystal soldered to RA6 and RA 7 pins on the PIC16F88. The crystal and capacitors can be soldered on
the underside of the pcb.

Alex.

Free Energy | searching for free energy and discussing free energy

Re: Second Stage Joule Thief Circuits
« Reply #570 on: February 07, 2010, 06:32:39 PM »

Offline jeanna

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Re: Second Stage Joule Thief Circuits
« Reply #571 on: February 07, 2010, 09:33:03 PM »
hello
no high voltage section in this forum.. man what gives..??
this isn't a joule theif .. but it was once the second stage to my jt..

the first video is a bulb lite.. nothing kool.. but it is bright enough


robbie
Robbie,
It is in the solid state section where a hi voltage thing that starts with more than a single AA battery goes.
The original place for the jt thread was there until it got so big itself that it got a section.
Please start a HV jt thread or something like that and give the specs.

or just give them here.
I saw the dc to dc converter there, so maybe that is at the heart of it?

I wonder what one of my jt with 1000v secondaries would look like with 6 volts to start it?

Do you have one like mine that you could try with 6 volts. I do not have the dc to dc converter .
And, even so, I would like to see the circuit. The light is steady on, and that is my ticket for starters.

thanks,

jeanna

Offline kooler

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Re: Second Stage Joule Thief Circuits
« Reply #572 on: February 08, 2010, 01:41:47 AM »
jeanna
you can make any toroid run higher volts.. more collector windings

but didn't you have a tor60 that put alot out... it just all about charging the cap as fast as you can..
but i think i noticed that it isn't the size of the cap but the frequency it discharges..
the large caps are slower to respond..

robbie

Free Energy | searching for free energy and discussing free energy

Re: Second Stage Joule Thief Circuits
« Reply #572 on: February 08, 2010, 01:41:47 AM »
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Offline jeanna

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Re: Second Stage Joule Thief Circuits
« Reply #573 on: February 08, 2010, 02:50:43 AM »
Thanks kooler,
I was just trying to squeeze the information from allaboutcircuits today.
I really want to know the simplest thing. It is so simple that nobody thinks I am asking it because it is such a well understood thing.

OK
I know about the time constants.
I know I need to find the right speed charge and throw a switch or like that to empty the cap then it will drop out from the cap and then reset the switch and it will refill.

I also understand that an inductor will act like both the resistor and the switch allowing the cap to fill then discharge.


I am asking how you put these things together.
I do not know how to draw the circuit so that what dumps out from the cap goes where I want it which is the lamp.
I understand the volts and freq of the cap and inductor is the fiddly part. but where is the lamp?
Is the lamp in the same spot and so parallel with the legs of both inductor and cap? Is the lamp in series to those after they do their work?- that is how I had it in my ac from jt circuit.

Since it is fiddly, it is really hard to know if I have put the pieces together wrong when nothing happens, because it could just be that I need to fiddle more.
But, if the pieces need to go together differently, then no amount of fiddling will help me.
OR
Is this such a complex problem that nobody else knows the answer either.
I am starting to suspect the latter.
Today, you got a steady light (no visible pulses) from a bulb.
You called it nothing special.
ummmmm
Can you help me do that or is this something that dc to dc converter did for you, and it was just drawing lots of amps from your battery?

thank you,

jeanna

Offline xee2

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Re: Second Stage Joule Thief Circuits
« Reply #574 on: February 08, 2010, 03:28:38 AM »
@ kooler

hello
no high voltage section in this forum.. man what gives..??
this isn't a joule theif .. but it was once the second stage to my jt..

the first video is a bulb lite.. nothing kool.. but it is bright enough

http://www.youtube.com/watch?v=HoLDlTv5YGw

and the second video is just high voltage fun..
but be warned that it is high voltage and could kill.. trust me!!!!!!

http://www.youtube.com/watch?v=n04977vS6b4

stay safe and have fun

robbie

I missed this since I do not check this thread often. But now I found it. Great stuff. Are you feeding the flyback with 1000 volts? It sure makes some nice sparks. Thanks for the videos.


Free Energy | searching for free energy and discussing free energy

Re: Second Stage Joule Thief Circuits
« Reply #574 on: February 08, 2010, 03:28:38 AM »
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Offline kooler

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Re: Second Stage Joule Thief Circuits
« Reply #575 on: February 09, 2010, 12:34:48 AM »
jeanna
i will post a diagram soon.. the ccfl driver puts off a perfect sine wave then i put a 1n4007 diode
at 5 volts the ccfl driver puts out alittle over 1kv so 6 volts gives.. ?? lol

xee2
i was dumping 960-980 volts thru the triac.. then i blew a cap.. they are rated for 630v dc

but the circuit is dumping around 300 volts the best i can tell in both videos..
i was thinking that was still 980v both i forgot i took the sidac off the neons..
more to come..

robbie

Offline guruji

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Re: Second Stage Joule Thief Circuits
« Reply #576 on: February 09, 2010, 09:41:21 PM »
Hi Kooler once you posted a schematic of a JT with TIP31c and consuption was 0.016ma only. Is there other transistors or near that consumes that much?
Thanks

Free Energy | searching for free energy and discussing free energy

Re: Second Stage Joule Thief Circuits
« Reply #576 on: February 09, 2010, 09:41:21 PM »
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Offline kooler

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Re: Second Stage Joule Thief Circuits
« Reply #577 on: February 10, 2010, 01:19:20 AM »
hello guruji
the mpsa06 works good for some reason. i think it cause it cuts off real sharp..


robbie

Offline kooler

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Re: Second Stage Joule Thief Circuits
« Reply #578 on: February 10, 2010, 07:48:14 AM »
hello all
this is the basic circuit lighting a bulb.. using the jt

Free Energy | searching for free energy and discussing free energy

Re: Second Stage Joule Thief Circuits
« Reply #578 on: February 10, 2010, 07:48:14 AM »
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Offline Pirate88179

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Re: Second Stage Joule Thief Circuits
« Reply #579 on: February 10, 2010, 07:52:51 AM »
kooler:

Nice circuit.  How bright would you saw the bulb is?  That is really something, nice job.

Bill

Offline kooler

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Re: Second Stage Joule Thief Circuits
« Reply #580 on: February 10, 2010, 08:09:23 AM »
kooler:

Nice circuit.  How bright would you saw the bulb is?  That is really something, nice job.

Bill

its about 30% brighter than sticking in the 120 outlet..
i been blowing those 1n4007 diodes so when i get some xtra time i will put a diode from a microwave the 12000v type and try it again..
i haven't really fine tuned it yet. i knew there was a few people wanting to see this circuit light a bulb so i just threw it together and video it..
you have to add some more collector windings to use 6volts with the jt.. but those big toroids really hiss loud with 5-6 volts.. that why i used the ccfl driver.. the battery in the video is a 6 volt type but only has 5.6 volts in it..

robbie

Free Energy | searching for free energy and discussing free energy

Re: Second Stage Joule Thief Circuits
« Reply #580 on: February 10, 2010, 08:09:23 AM »
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Offline jeanna

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Re: Second Stage Joule Thief Circuits
« Reply #581 on: February 10, 2010, 08:24:46 AM »
Thank you robbie,

Do you happen to know the volts and frequency coming off the toroid?
I might have the parts I need, if the triacs I got are good enough. I have some high turn toroids and maybe I can just go ahead with this.
Thank you for this clear circuit,

jeanna

Offline sirmikey1

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Re: Second Stage Joule Thief Circuits
« Reply #582 on: February 10, 2010, 02:56:31 PM »
  I was reading back in the JT thread that someone had got a stepper motor running with the JT.  I'll try to track that down, now. 
Exciting...
SM

Offline mscoffman

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Re: Second Stage Joule Thief Circuits
« Reply #583 on: February 10, 2010, 03:52:56 PM »
hello all
this is the basic circuit lighting a bulb.. using the jt

@kooler

These circuits are amazing...Could you give the current in ma. coming
from a specific battery? Thanks you for posting the schematic.

:S:MarkSCoffman

Offline kooler

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Re: Second Stage Joule Thief Circuits
« Reply #584 on: February 11, 2010, 02:35:49 AM »

Do you happen to know the volts and frequency coming off the toroid?

jeanna

the toroid i have will charge a cap alittle passed 1200v dc.. but once this circuit is running i can't get my scope near it.. it will start giving weird readings without hooking the probe up thats 2-4 feet away.. this is the same scope i have if anyone know how i can shield it
http://www.tequipment.net/Velleman_hps10se.html

@kooler

These circuits are amazing...Could you give the current in ma. coming
from a specific battery? Thanks you for posting the schematic.

:S:MarkSCoffman

this video shows the power of this circuit plus the ma's from a 1.5v d cell battery
but the 6 volt i was using had 5.6 volts left in it .. and it drawed 68 ma's with the ccfl driver
but i need to tweak the ccfl circuit some more.. i bet i can get the ma's way down..
plus it has one hv out pin and it has a perfect sinewave
http://www.youtube.com/watch?v=4pM3KhV8daw

robbie

 

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