Author Topic: Joule Thief (Read 6332678 times)

kooler · « **Reply #13200 on:** March 27, 2010, 10:19:22 PM »

well i see the french fry and candyland war is still going..
but more on topic.. the video i posted last night was at 0.657 volts and this morning it was at 0.871volts..
and now it is at 0.852 volts.. it was running at 104 ma draw so i think i will reconnect it to the meter to see it the draw went up or down since the light is still going way passed 40 hours

robbie

innovation_station · « **Reply #13201 on:** March 27, 2010, 10:26:40 PM »

Quote from: kooler on March 27, 2010, 10:19:22 PM

well i see the french fry and candyland war is still going..
but more on topic.. the video i posted last night was at 0.657 volts and this morning it was at 0.871volts..
and now it is at 0.852 volts.. it was running at 104 ma draw so i think i will reconnect it to the meter to see it the draw went up or down since the light is still going way passed 40 hours

robbie

sh!ft bro ....

still laughing my a$$ off ... dude i got like no body fat left laughed it all away ...

W

Mk1 · « **Reply #13202 on:** March 27, 2010, 10:37:12 PM »

Quote from: kooler on March 27, 2010, 10:19:22 PM

well i see the french fry and candyland war is still going..
but more on topic.. the video i posted last night was at 0.657 volts and this morning it was at 0.871volts..
and now it is at 0.852 volts.. it was running at 104 ma draw so i think i will reconnect it to the meter to see it the draw went up or down since the light is still going way passed 40 hours

robbie

Good work Kooler !

You are right , war is stopped since there are too many civilian casualty .

That is it everyone , you like ist keep him.

I was raised to stand for what i believe , sorry am i bad .

Many people think like me , but are so used to be victims they don't even have the guts to do anything about it ...

I have worked on this tread to make it what it was , now its ist land.

Quite sad .

resonanceman · « **Reply #13203 on:** March 27, 2010, 11:04:39 PM »

I truly hope you 2 children are finished trashing this thread now.

gary

Mk1 · « **Reply #13204 on:** March 27, 2010, 11:10:20 PM »

Quote from: innovation_station on March 27, 2010, 10:57:27 PM

its an ISland get it right dummy....... and your stuck on it .... there aint a ship a shore to pick you up !

W

I will not border people here again , you have fun ist .

To the others , i tried to clean this place , sorry ...

Now you will have to live whit ist ...

Shame on you !

You want to know what i did here i made you guys put secondaries on those jt , that is what i have done here , and ist invented earth .

So i lost !

@resonanceman

If anyone beside me had any backbone this would never have happens.

Sorry you don't see it yet , do anything worth mentioning and he will tell you its his work .

Good luck .

This tread is dead to me now. He destroyed it for me he will do the same to everyone.

stprue · « **Reply #13205 on:** March 27, 2010, 11:16:09 PM »

I would say that it is builders/learners/everyones land!

We have come a long way on this thread and the progress seems to be endless so we should all focus on that and ignore everything else!

@all

Keep up the fantastic work

resonanceman · « **Reply #13206 on:** March 28, 2010, 12:49:45 AM »

Quote from: Mk1 on March 27, 2010, 11:10:20 PM

@resonanceman

If anyone beside me had any backbone this would never have happens.

Sorry you don't see it yet , do anything worth mentioning and he will tell you its his work .

Good luck .

This tread is dead to me now. He destroyed it for me he will do the same to everyone.

MK

You are mistaking being reasonably mature with not having a backbone.

If IST thinks you kicked him .........he is going to kick back.

If you think someone has kicked you ...... you are going to kick back

Neither of you has the maturity to stop

Neither of you has the wisdom to see how pointless it is.

You both have some talent building things....... that is what should be shared here.

I would like both of you to go back over the last few pages and look at what has been posted.
Look at your posts as if someone else had wrote them
What would you think of this person?

gary

Edit

I am not going to help you trash this thread.........so ........this is my last post on the subject

innovation_station · « **Reply #13207 on:** March 28, 2010, 04:01:45 AM »

so back to building ...

i found a bunch of caps i forgot i had probally work good for banger caps ..

100vdc 680 uf i have bout 100 or so ..

so i will likely use them at around 50 volts ..

so a simple way i can build this controled with materials i have aquired from the dollarstore is to use the chasers to discharge the caps 123 123 123 useing 1 cap per channel and useing 3 chasers ..

thats only 9 caps .. and i could possibally only ever drop 2040 uf per cycle of 3 chasers by the 3 cap batteries . in 1 revolution ... with 9 bangs .. thease chasers run fairly fast tho ... however i doubt the 3 cam bords could not keep up ..

espically with buffer time ...

W

kooler · « **Reply #13208 on:** March 28, 2010, 05:59:03 AM »

the circuit i posted in the video has run for over 50 hours and the volts on battery are staying on 0.850-0.856
it started out with 104 ma's draw so i checked it after 48 hours and it has went from 104ma to 7.58 ma draw..
so that tell me why is running alot longer than i thought.. so i got a full charged battery and stuck it in and it had 110ma draw
so then i put a dead battery in it with 0.38 volts and it pulled 1.4 ma's.. the led is still full brightness..
so it is backwards from the regular jt that draws more as it dies..
and i still don't understand nothing about circuits so i might just drop this one..

robbie

jadaro2600 · « **Reply #13209 on:** March 28, 2010, 09:33:38 AM »

Quote from: stprue on March 27, 2010, 11:16:09 PM

I would say that it is builders/learners/everyones land!

We have come a long way on this thread and the progress seems to be endless so we should all focus on that and ignore everything else!

@all

Keep up the fantastic work

Yeas, I look forward to you semi-final design video, if you don't have time, just say what the part numbers are like you did in the last one, I can probably figure out the schematic that way.

Quote from: kooler on March 28, 2010, 05:59:03 AM

the circuit i posted in the video has run for over 50 hours and the volts on battery are staying on 0.850-0.856
it started out with 104 ma's draw so i checked it after 48 hours and it has went from 104ma to 7.58 ma draw..
so that tell me why is running alot longer than i thought.. so i got a full charged battery and stuck it in and it had 110ma draw
so then i put a dead battery in it with 0.38 volts and it pulled 1.4 ma's.. the led is still full brightness..
so it is backwards from the regular jt that draws more as it dies..
and i still don't understand nothing about circuits so i might just drop this one..

robbie

That's a lot for JTC. ..maybe there's something going on at the transistor.

'Tuning' this transistor is relatively easy, just attach you ammeter leads on the C and E connection and measure the resistance across it and you apply a base current / voltage. I do this all the time, ..there can be many extra K ohms there and still turn it on. I was attempting to make a variable current device which would decrease resistance and voltage source decreased, that way the transistor could continue running beyond the 'point of death' voltage ...

I was going to do this with mosfets, but they're all quite senstive, I haven't been abel to get good readings on them.

Mk1 · « **Reply #13210 on:** March 28, 2010, 10:21:14 AM »

@all

I am back and will stay !

Thanks for all the support !

@Ist , check mate buddy , some bend , those that don't just break ...
Sunday is the day of the lord ... you got what you deserve ...

@pirate

You can erase the last few pages post from me and ist .

@Stepan

Thank you !

detrix42 · « **Reply #13211 on:** March 28, 2010, 06:50:45 PM »

@all: Here is something I am figuring out about the Joule Thief. With my current setup, it does not matter what the input voltage is, I still get 120v out. This is why a 1.5v battery drained to .5v can still power an LED. This is very interesting. So what do I have to do the get more voltage out. I would love to power my Newman motor with only 1.5v input. My guess is the number of windings in the larger side of the coil. So I will definitely want to try an automobile's ignition coil.

I believe you only need enough to bias the base-emitter junction of the transistor. And perhaps the speed at which the transistor can be switched on and off plays a factor in how much I can get out of a JTC. Hmmmm...............................

I have included a schematic of my setup, which seems to be the best efficiency (voltage wise, most bang per volt). I did not include a voltage value, because it seems to not matter.

Eastov · « **Reply #13212 on:** March 28, 2010, 07:49:56 PM »

detrix,

Less turns on primary and more turns on secondary, you can get over 1kv. Another example is winding three coils on a 2.5 inch toroid core, 2 turn primary and 10 turn secondary (JT), with the collector at 80 turns. Those little flash camera circuits also put out over 1kv.

http://youtube.com/jeannacav
http://youtube.com/lidmotor

e
east

woopy · « **Reply #13213 on:** March 28, 2010, 08:19:36 PM »

Hi Slayer

Always testing the main coil and today i could get a nice very stable 2mm long plasma arc with about 100 ma at 12 volts.

What is remarkable is that the Arc does not appear when i turn the current on. I have to light my CFL tube first (by contacting the main coil) than i have to slowly get away the CFL tube until the light desapears and only than the plasma arc is on.

It seems to be the necessity to turn the coil outer power on.

Very interesting

Can you explain why we need to turn this outer power on ? And can somebody explain me what is the power in a plasma arc. The smelling of ionised air is quite strong and depending of the gap distance it can burn my table. !

Regards

Laurent

guruji · « **Reply #13214 on:** March 28, 2010, 10:07:18 PM »

[A author=detrix42 link=topic=6123.msg235096#msg235096 date=1269795045]
@all: Here is something I am figuring out about the Joule Thief. With my current setup, it does not matter what the input voltage is, I still get 120v out. This is why a 1.5v battery drained to .5v can still power an LED. This is very interesting. So what do I have to do the get more voltage out. I would love to power my Newman motor with only 1.5v input. My guess is the number of windings in the larger side of the coil. So I will definitely want to try an automobile's ignition coil.

I believe you only need enough to bias the base-emitter junction of the transistor. And perhaps the speed at which the transistor can be switched on and off plays a factor in how much I can get out of a JTC. Hmmmm...............................

I have included a schematic of my setup, which seems to be the best efficiency (voltage wise, most bang per volt). I did not include a voltage value, because it seems to not matter.
[/quote]

Hi detrix what transistor and diode are you using?
Thanks

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Author Topic: Joule Thief (Read 6332678 times)

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