Joule Thief

[Pirate88179]

Gadget:

Thanks for the response.  My meter is not fried as the fuse is still good.  I have blown them before.  I was just curious about the negative symbol on it but I guess I got away with it as it is not yet full.  Yes, my meter does not go to 650 amps, ha ha.

When my little 10 Farad caps got full, they just stopped charging.  Will this one just continue to charge if I leave it hooked up?  I am surprised the volts are higher than I have seen with this new EB set-up.  Again, on the smaller supercaps, the volts never went higher than the 1.95 input value.  This is high enough now that I might fry the Fuji if I hook directly to it so I am going to have to ramp it down a bit with a transformer.

Thanks for the other warnings.  I already figured that I do not want to touch 650 amps, ha ha.  You are right, this is not a toy at all and folks do need to use caution when experimenting with these.

I am going to have to slow down a bit a figure out some safe experiments.  Come to think of it, I probably should hang a sign on my cap container saying "Danger" just in case the maintenance guy decides to touch the leads on the EB supercap set-up.  It might get me evicted.

Bill

[gadgetmall]

Gadget:

Thanks for the response.  My meter is not fried as the fuse is still good.  I have blown them before.  I was just curious about the negative symbol on it but I guess I got away with it as it is not yet full.  Yes, my meter does not go to 650 amps, ha ha.

When my little 10 Farad caps got full, they just stopped charging.  Will this one just continue to charge if I leave it hooked up?  I am surprised the volts are higher than I have seen with this new EB set-up.  Again, on the smaller supercaps, the volts never went higher than the 1.95 input value.  This is high enough now that I might fry the Fuji if I hook directly to it so I am going to have to ramp it down a bit with a transformer.

Thanks for the other warnings.  I already figured that I do not want to touch 650 amps, ha ha.  You are right, this is not a toy at all and folks do need to use caution when experimenting with these.

I am going to have to slow down a bit a figure out some safe experiments.  Come to think of it, I probably should hang a sign on my cap container saying "Danger" just in case the maintenance guy decides to touch the leads on the EB supercap set-up.  It might get me evicted.

Bill

Hi . Remember i told you that it will burn lamp cord . Well lamp cord is stranded and much thicker than  a 10 amp fuse . your lucky !! . Be careful Please . you can only read in series with an led or jt when checking current . If that cap is not at ZERO then it has AMPS in it . after you hit 2 volts its almost full and the AMPS are full as well . you need to watch the charge . mine will not over charge because i have a load on it all the time and the circuit i posted with the Night time switch keeps it drained below the 2.7 volts , so you can use  a
2.5 volt Zener 1n4004 in series   to stop it from over charging also . . once the cap HIts 2.5 it stops charging  I have more tricks but less see how it does today and if it reaches 2.6 then we will have to regulate it .Remember when running a Jt that this is almost twice the Volts so i suggest running two Jts or jt and a fugi in series . that is neg to pos  in series then you can run them "safely "from the MONSTER .AND i recommended a couple of round crimp terminals and some good lamp wire and a fuse Find the Biggest ring Crimp and then you will have to cut it so it will fit the threads.this way you have a Solid Connection . I would say negative 9 on your poor ole meter is saying your killing me i am incorrect and can't handle this kind of power !! . Really you can get some nichrome wire and make a heater with it and power a small fan from it for awhile or run your jt for a few days . Many Possibles .
Gadget



Gadget

[nievesoliveras]

Hi Jesus,
I wanted to mention this and this is the right opportunity.

If you were able to charge your battery from your set up even if it is not correct and even if it did come from a loose wire connection, that very thing may be what you need to explore.

Please tell us exactly where the loose connection was. Like even draw it on your circuit. It may be the very information we need. Perhaps there was an extra pulsing in that place which made more back emf in the right place etc.......
---
( For instance, my 2tier circuit has some very odd things going on. Only odd, because if all the wires were connected in a single loop the lights should be equally bright; but they are not. If pulling out "light A" makes one other light "light B" go out then why , if you reverse this and pull out light B does light A not go out?

I am sure there is a reasonable explanation, but it is not what you would expect to see at first glance. I believe it has to do with the inductor toroid being there and doing something at that point.)
---

I bet you have a circuit within a circuit that is doing something special with the main toroid inductor.

So, I would love to see a schematic of your "mistake with the loose wire".

thank you,

jeanna

I still do not understand the joule thief completely.
I mean why it do this or do that.

But for your request of the circuit failure explained I wrote the explanation on the circuit graphic.

If anybody is interested on trying the new version that separates the LED working from the Diode charging I will post it here first instead that on my Feedback to the source topic.

Jesus

[Thaelin]

   I posted the result of the test simply to verify the other test. My outcome was the same. I have a dual spiral wound 3"X6" coil with a 220k cap soldered to it for the input side. The other coil has a 220k soldered in series with it to the bulb. There was no readings taken other than to see what the input voltage was from the sig gen. That part will come later as I progress into another area other than the jewel thief. This may well be something that could be used in the circuit. I am not sure just how yet. Getting there.

thay

[Pirate88179]

@ Gadget:

Thanks.  I will go check the volts and see where it is.  I hope it does stop at 2.5 that would be good.  If it is higher than that when I check it, I will take it out of the circuit for now.  I get the feeling I could run a toaster with this thing.

Bill