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Solid States Devices => Joule Thief => Topic started by: CG2016 on July 04, 2016, 10:50:43 PM

Title: Joule thief that could light the whole house
Post by: CG2016 on July 04, 2016, 10:50:43 PM
So ive been making and tweeking for awhile. This unit will light many ( dimmable 120 vac led bulbs) on battery power from 2.4 vdc to 18 vdc.
Shown first is my original unit, then showen is my final unit. .it keeps the current constant no matter how many led bulbs you add ( ive only tested to 10).
I have these connected to my shed and basement lighting and the batteries are charge by my wind turbine.

http://youtu.be/1fp6mlCowsQ
http://youtu.be/zfnoQgN4vBI
Title: Re: Joule thief lights whole house
Post by: AlienGrey on July 07, 2016, 01:33:05 AM
So ive been making and tweeking for awhile. This unit will light many ( dimmable 120 vac led bulbs) on battery power from 2.4 vdc to 18 vdc.
Shown first is my original unit, then showen is my final unit. .it keeps the current constant no matter how many led bulbs you add ( ive only tested to 10).
I have these connected to my shed and basement lighting and the batteries are charge by my wind turbine.

http://youtu.be/1fp6mlCowsQ
http://youtu.be/zfnoQgN4vBI
Can anyone find the circuit details on the forum ;) ??????????????????????????
please send a pointer fanks
Title: Re: Joule thief lights whole house
Post by: CG2016 on July 07, 2016, 01:54:02 AM
Try New 2016 BJL_LED   in the electronics section
Title: Re: Joule thief lights whole house
Post by: conradelektro on July 07, 2016, 03:35:50 PM
It is a nice hobby to play with Joule Thief type circuits, but if you want decent light from a 12 V battery it is best to by a DC to AC converter, e.g.

http://www.ebay.com/itm/150W-Car-DC-12V-to-AC-110V-220V-Power-Inverter-Charger-Converter-Boost-Board-/172124189007?hash=item281366b14f:g:FIgAAOSwu1VW3AUl    for about $ 10.--

This example of an DC AC converter allows you to hook up any sort of lamps (110 V or 220 V CFLs or LED-lamps) which consume up to 150 Watt to a 12 V battery.

You will see that the brightness of the lamps is much better than with a Joule Thief (for the same amount of input power).

The modern DC to AC converters have an efficiency of about 80%.

Most people over estimate the light output of lamps hooked up to a Joule Thief. Do a proper comparison (measurement) and you will see.

Here http://www.ebay.com/itm/COMPLETE-KIT-100-W-Watt-100W-Solar-Panel-1500W-Inverter-12V-RV-Boat-Off-Grid-/251401773662?hash=item3a88b6a25e:g:lyIAAOSw9r1WAcsq  you see a complete kit (you have to provide the 12 V batteries) that allows you to charge 12 V batteries with a 100 W solar panel and then you can have up to 1500 Watt 110 Volt AC (via the included DC AC converter).

I just gave you examples. Shop around and you will find better deals. A Joule Thief is a nice experiment, but not for proper lighting from 12 V batteries (in a camper or boat or little cabin).

Greetings, Conrad
Title: Re: Joule thief lights whole house
Post by: CG2016 on July 07, 2016, 04:04:11 PM
For some reason inverters have a problem with leds. The brightness of the leds was measured and is the same as when run on mains power. Plus this circuit is much cheaper and runs cooler than an inverter. Maybe you could build it and see. Can the inverter keep lighting the lamps on a dead battery like this can? ( Down to 2.4 volts). I doubt it.
Power supplied by the 12 v battery was measured at 6 watts , Pretty good I'd  say.

So try it. You'll like it. ;D
Title: Re: Joule thief lights whole house
Post by: conradelektro on July 07, 2016, 07:22:56 PM
For some reason inverters have a problem with leds. The brightness of the leds was measured and is the same as when run on mains power. Plus this circuit is much cheaper and runs cooler than an inverter. Maybe you could build it and see. Can the inverter keep lighting the lamps on a dead battery like this can? ( Down to 2.4 volts). I doubt it.
Power supplied by the 12 v battery was measured at 6 watts , Pretty good I'd  say.

So try it. You'll like it. ;D

Light brightness is not easy to measure. You need a light meter
http://www.ebay.com/itm/cmltzone-Digital-Light-Meter-Lumenmeter-200000-Lux-Illuminance-Tester-LCD-/252442663566?hash=item3ac6c15a8e:g:4VkAAOSweWVXc0l4 (http://www.ebay.com/itm/cmltzone-Digital-Light-Meter-Lumenmeter-200000-Lux-Illuminance-Tester-LCD-/252442663566?hash=item3ac6c15a8e:g:4VkAAOSweWVXc0l4)
and a rigorous measuring protocol (best in a box, always the same distance between light meter and light bulb).

I played endlessly with many Joule Thief type circuits and once I got a lumen-meter and learned how to do the light measurements I saw the light. Eye sight is a poor judge of light brightness.

One should not exhaust a 12 V battery down to 2.4 Volts.

There a 12 V LED-lamps for campers, cars and boats, then you need no converter just connect them to the 12 V battery:

http://www.ebay.com/itm/2x-12V-LED-T10-WHITE-LIGHT-Camper-Bulb-Globe-Garden-Wedge-5SMD-Car-Parker/111914619862?_trksid=p2047675.c100005.m1851&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D37254%26meid%3Df55b1b8ba4a34c19b6739ce38996c192%26pid%3D100005%26rk%3D4%26rkt%3D5%26sd%3D121597979142 (http://www.ebay.com/itm/2x-12V-LED-T10-WHITE-LIGHT-Camper-Bulb-Globe-Garden-Wedge-5SMD-Car-Parker/111914619862?_trksid=p2047675.c100005.m1851&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D37254%26meid%3Df55b1b8ba4a34c19b6739ce38996c192%26pid%3D100005%26rk%3D4%26rkt%3D5%26sd%3D121597979142)

But if you like your Joule Thief circuit, it is fine with me.

Greetings, Conrad
Title: Re: Joule thief lights whole house
Post by: CG2016 on July 07, 2016, 08:56:46 PM
Proper measurements were made, using the exact same criteria in both cases . It functions as advertised. And you can use the batteries you assumed were dead, to run it.
By the way there's something new called an ultra capacitor and it doesn't care much how low it goes etc. Hardly ever goes bad.
Title: Re: Joule thief lights whole house
Post by: SkyWatcher123 on July 08, 2016, 04:31:11 AM
Hi cg2016, thanks for showing video, could you please post circuit drawing and build details, thanks.
peace love light
Title: Re: Joule thief lights whole house
Post by: CG2016 on July 08, 2016, 01:10:01 PM
Details of the build are mentioned on youtube video description or comments.
I will be making a new video of the updated unit in about a week or so
Here's  a video from a couple years ago of my first unit. The new one is an improved version of this one.
https://youtu.be/og81-4iDyHU
Title: Re: Joule thief lights whole house
Post by: Cherryman on July 08, 2016, 02:39:37 PM
Great sharing!


You know if there is a 220V version  also?
Title: Re: Joule thief lights whole house
Post by: CG2016 on July 08, 2016, 02:58:26 PM
If a resistor is removed from the circuit, I have measured up to 250 volts, but I'm  not sure it would light a Euro style lamp. I have no access to 220 volt ac led bulbs, so i couldn't test them.
Disclaimer is: Different manufacturers bulbs will light differently at different voltages and frequencies, also some will light on dc  as well as ac.
Internal circuitry of each style bulb is different designs due to manufacturers trying not to infringe on each others patent protections.
Title: Re: Joule thief lights whole house
Post by: SkyWatcher123 on July 08, 2016, 06:07:07 PM
Hi folks, for anyone interested, i found his latest device circuit.
peace love light
Title: Re: Joule thief lights whole house
Post by: AlienGrey on July 09, 2016, 01:04:46 AM
Hi folks, for anyone interested, i found his latest device circuit.
peace love light
Hi ! If it needs a huge heat sink then it must be wasting energy I wonder if changing the transistor to a mosfet and using a mosfet driver would help ?

Just a thought.

AG
Title: Re: Joule thief lights whole house
Post by: CG2016 on July 09, 2016, 01:29:20 AM
That's just a left over note from a previous version that was never removed .
What's interesting about the comments is people are trashing and trying to find fault with circuit before they even try it.  Very interesting.
If works as described. I haven't seen one this small, do as much. You can add extra lamps and the current draw doesnt increase. Been tweeking this circuit for two years. I'm happy with its operation. 12 volts @ 0.500 A (6 watts)  makes a great camping, survival, lets go sledding at 12am gizmo, string a wire with 10 bulbs down the slope and go. Continuous usage with one bulb gave useable light for over 18 hours from 4 zinc carbon , dollar store dry cells.
I would imagine you could use a small 7AH sla battery intermittently like normal usage and you would get survival light for a long time. You just have to disconnect the battery when you turn off the light instead of disconnecting the lamp because the circuit still draws current even without a load, because the oscillator is still running.
Title: Re: Joule thief lights whole house
Post by: CG2016 on July 09, 2016, 02:29:32 AM
There are a couple of notables.
Only dimmable led bulbs should be used
40-60w equivalent types
Not all bulbs perform equaly
Ive found philips slimline and the EcoSmart bulbs from the home depot store work the best.
Some sylvania, NO DOLLAR STORE BULBS unless you use the hv spike output.
Some Cree, some Feit
No GE stick lights.
Non dimmable bulbs usually strobe on and off.
You just have to buy them and try them.
The 2SD2081 transistor is simlar to a TO220 but it is ALL plastic except the leads. So I don't know why they designed it that way.
Title: Re: Joule thief lights whole house
Post by: SkyWatcher123 on July 09, 2016, 06:17:29 AM
Hi crazyguy, of course, thanks for sharing.
As for myself, measuring the lumens is ok, i think what really matters is, does it light a space to meet our needs and your circuit does that and seems pretty efficient as well.
Just because it may be fooling our brain-eye response time, doesn't matter much, if it does the job.
Tv's, monitors and i'm sure other things and even in nature, are fooling our eyes.
I will eventually build your setup, i'm working on a charger at the moment and another splitting the positive type device.
Thanks again.
peace love light
Title: Re: Joule thief lights whole house
Post by: CG2016 on July 09, 2016, 12:50:20 PM
Here are some other earlier versions.

http://www.youtube.com/watch?v=9kF-bAKDc2EJ
http://youtu.be/og81-4iDyHU
http://youtu.be/2kenamb-QL0
The circuit isnt fooling your eye. The led bulbs are being lighted by DC . Also human eye persistance is only good up to about 60 hz. This circuit operates in the 3000 to10,000 hertz range.
Title: Re: Joule thief lights whole house
Post by: CG2016 on July 09, 2016, 05:28:00 PM
@Admin
How do you edit posts? It seems that you can only edit posts on the last page, and are not able to go back and correct mistakes on previous pages.
Is that true?
Title: Re: Joule thief lights whole house
Post by: TinselKoala on July 10, 2016, 01:03:20 AM
I think there is a 24 hour window for editing posts.
Title: Re: Joule thief lights whole house
Post by: CG2016 on July 10, 2016, 01:34:48 AM
Thanks for that info.
They need to change that, sometimes mistakes are made.
Title: Re: Joule thief lights whole house
Post by: AlienGrey on July 12, 2016, 02:15:50 AM
One for Nick Z

Some guy with a home made torrid demonstrating standing waves and extra iron oxide winding.

https://www.youtube.com/watch?v=ei1tPkTmCeY#t=13.893175
Title: Re: Joule thief lights whole house
Post by: TinselKoala on July 12, 2016, 04:23:26 AM
Thanks for that info.
They need to change that, sometimes mistakes are made.

The window used to be longer but that caused problems when "certain parties" would go back, long after a post was made and replied to, and they would change the content of those old posts. So the 24-hour window is a compromise, giving you plenty of time to correct mistakes but not allowing the changing of history.
Title: Re: Joule thief lights whole house
Post by: CG2016 on July 14, 2016, 02:09:41 AM
So you see, the circuit posted by skywatcher is incorrect and you shoukd not build it because it will burn up.


Please take the schematic of the" light your whole house joule thief. " down . It has problems. Evidently the components used for the bread board design were different in some way. That circuit will burn up.

You shouldn't copy from other sites as the informstion could be copyrighted.
I wanted to take it down but this stupid forum won't let me, so do not build it.
Smoke.
Title: Re: Joule thief lights whole house
Post by: SkyWatcher123 on July 14, 2016, 05:00:04 AM
Hi crazyguy, sorry to hear that, i thought that was your latest circuit and was tested.
I guess i can't modify my post, maybe hartiberlin can, forum owner.
Let us know when you have a safe circuit, i'd like to see it.
peace love light
Title: Re: Joule thief that could light the whole house
Post by: CG2016 on July 28, 2016, 11:23:08 PM
Lights 9 watt 120 vac bulbs 100-600mA, it is now working fine.
https://youtu.be/--RWSKvT5QY
Title: Re: Joule thief that could light the whole house
Post by: FatBird on July 28, 2016, 11:34:24 PM
Please post a Wiring Diagram or a Schematic. 

https://www.youtube.com/watch?v=--RWSKvT5QY&feature=youtu.be (https://www.youtube.com/watch?v=--RWSKvT5QY&feature=youtu.be)

Thank you.
                                                                                                                      .
Title: Re: Joule thief that could light the whole house
Post by: CG2016 on July 29, 2016, 12:25:30 AM
Did you know you can connect Joule thief circuits in series for higher voltage or in parallel for more current? You can. You can also interleave them so they alternately charge a capacitor.
Look here.
http://vawtsonly.createaforum.com/index.php

http://youtu.be/tygN1R-lCeE
Title: Re: Joule thief that could light the whole house
Post by: SkyWatcher123 on July 29, 2016, 06:09:12 AM
Hi folks, good luck getting a schematic fatbird, it seems he banned me from his forum site or something is wrong with it.
People are funny sometimes, either one wishes to share or not.
He claims I shouldn't have posted his circuit, yet on his forum, all the circuit versions were there and i didn't see any nuclear burn up warnings, lol.
Anyway, looks like a typical boost converter to me, with a high enough voltage to light led bulbs.
peace love light
Title: Re: Joule thief that could light the whole house
Post by: CG2016 on July 29, 2016, 02:46:44 PM
Problems solved with instability and multiple voltage sources, more user friendly. User is cautioned that output can go to 280 vdc with no load. Very compact size. Will light many 120 vac led bulbs. I haven't tried 220 vac bulbs like they use in the EU but but it will light two 120 vac bulbs  in series. All led bulbs are different. They claim the same current and wattage but compairing two bulbs that are the same 120 volts current and wattage, one bulb will start lighting at 17 volts while the other won't start until 75 volts. It will come in handy in an emergency situation. You can populate all your table lamps with led bulbs and use them on mains power, then in an emergency situation just plug them right in to this unit and keep enjoying your favorite book. It only uses 7 watts no matter how many bulbs are connected. The circuit is regulated to be user friendly and somewhat foolproof, components were installed to tone it down, it will do much more. Here is the schematic.
Title: Re: Joule thief that could light the whole house
Post by: SkyWatcher123 on July 29, 2016, 10:48:41 PM
Hi cg2016, you proved me wrong, thanks for sharing the updated circuit.
So did you ban me from your forum or is there something wrong with it.
If you did ban me, please tell me why.
I will have to travel to a radio shack, most are far away from me now, and get some of those parts, looks like a nice circuit.
peace love light
Title: Re: Joule thief that could light the whole house
Post by: CG2016 on July 30, 2016, 05:08:02 AM
Only admin has that power. I am interested in johnny davros buzzer drive circuit. Have ordered several different buzzers but last time i tried it the transistor got really hot.
Title: Re: Joule thief that could light the whole house
Post by: CG2016 on August 03, 2016, 12:56:03 PM
Just a few safety updates to the schematic


Title: Re: Joule thief that could light the whole house
Post by: seychelles on August 04, 2016, 06:57:59 AM
THAT ONE WILL FOR SURE POWER YOUR WHOLE HOUSE. AT ONLY 14 BUCKS..
http://www.ebay.com.au/itm/ZVS-Tesla-Coil-Driver-Board-Module-For-Tesla-Coils-H-Voltage-Power-Supply-F0F0-/142006475945?hash=item21103edca9:g:7q8AAOSwagdXSD0a
Title: Re: Joule thief that could light the whole house
Post by: CG2016 on August 25, 2016, 10:29:19 PM
Nope