Joule Thief

[jadaro2600]

@jeanna,
Ok so I threw together another JT to try your idea ..I include these pictures because if what you asked was as stated above ( confusing to me ) ...I may have to build another one to test your idea.

I wound this toroid there with twice as many windings on the upper path from + to collector as there are from + to base.  The windings are setup so that the paths oppose one another on the toroid as far as direction of current.  This circuit doesn't seem to accept a capacitor.  NO capacitor...  and just for verification, this is using a 1.5v battery.  This seems absurd to me..not having a capacitor.

Both coil paths are the same in these photos.  The toroid is from the charred remains of a CFL.  Both version of this circuit use about 1.6ma when inserting the ammeter, the current starts out initially around 4ma and then rapidly decreases to ~1.6ma  ( close to theta )

The third image is a bridged version - it uses about 2ma with the resistor in the middle.  COme to think of it, image three doesn't look like it should work at ALL...but it does, somehow.

Edits to add images and text.  FFR - this green led seems to produce more light than usual - it's aparent brightness at operating voltage is exceedingly bright 900mlm or something like that.  So, forewarning that when tested with other LED colors, the brightness was low except for red.

[electricme]

@Jeanna,
I am 5 posts back playing catchup like you.

Welcome back to the thread.
Hope you managed to relax and recharge the internal batts.

I have a Multi frequency thingie pluged in the power point, the red led flashing as power is on, green LED cycles through Hi to Low back to high, I will see how it works over time.

@bill,
This is a excellent idea about putting all the circuits i one section.
I think you should keep the posts in the order they were posted as people can then see improvements as they are made, however I my views are flexable.

@all,
Got to buy a lawnmower, mine wont start siiii, and its getting too old in the tooth, and the grass n weeds are a foot long.
I might get 2 battery operated ones, petrol is going to go through the roof shortly. At least I won't be worring about petrol, oil or sparkplugs.

jim

[Pirate88179]

@ Jim:

forget the lawnmower...just set fire to it....oops....bad idea.  Teach the mice to eat grass or get a goat.
Thank you for your kind words.  Yes, we have to keep in in the order they were posted or it will not work, as MK1 pointed out.  I am through the first 100 pages.........

Bill

[TheNOP]

@The NOP,
Sorry to hear you motherboard died.
If you still got it, take a good close look at the larger capacitors, if there is one or more with a bulging top, replace the cap/s they will probably be a parcial short.
If you see a cap leaking, replace it also.

That should fix er up.

Thanks for the tip, but i had already gone through that.
look like it is a chipset ic that is at fault.


@Pirate88179
great idea you had there with the schematic tread.
know that it have already helped someone, me. 

[Koen1]

@IST: Hey thanks a lot for that MK2 drawing there bud!
I had trouble sleeping last night so I decided to wind one,
I tried to follow Mark's instructions on that schematic from page
200 or so and wrapped two bifilar secondaries, one on each side,
12 turns up, 10 turns down, just like on that pic from MK1.
Then wrapped two single wire coils on either side as the primaries.
Looks like your pic so I'm hoping I did it right.
Will hook it to the transistor etc later this evening, and see what I get.

@MK1: Thanks for your reply Mark.

I guess , you will have to try it , the mk series , are design to give a ac out put ,
by having the 2 coil at 180 from each other and the coil going up and down ,

Yes, that part I had figured out

as for getting more , then in that is still not clear , if you would like to clear the confusion , i will help you to make one , if you like that .

Thanks for that offer bud. I just made an MK2 style ring last night and will try it tonight, but if I for some reason can't get it to work I'll give you a call.

But traditional theory state that the current is equal in the coil that is with one prim and on secondary , but you can make many secondary they are all the same.

Yes. But does that not mean, according to standard stransformer theory, that the input from the primary is divided over the secondaries?
In other words, we can feed a primary 1V and have a secondary that puts out 100V, but the amps in the secondary should also be 1/100th of that of the
feed; now adding another secondary, that secondary will also show 100V, but now both secondaries should have 1/2 * 1/100th makes 1/200th of the amps...
So that the total power input still equals the total output?
That is exactly why I nagged IST just a few posts back; If there is no actual power gain but only voltage multiplication, then sure you can charge
batteries from the output but if they only pick up the same power as was put in (minus losses) then I wonder what use it is, really.
If the gain is in the ability to suck the last little remaining charges out of non-rechargeable batteries before you throw them away,
then I suppose that is a more energy efficient way of emptying batteries, and compared to just throwing the battery away when the
output drops below the norm that woudl of course be a good way to save energy. But that's just using batteries more efficiently,
and the impression I got from IST was that power gain was implied.

My last mk2 light many neon for a button cell , that is with a regular jt circuit . The secondary are not connected to circuit , So i am real happy with results . My neon are rated at 120 ac.

Well I can't argue there, that is an impresive feat!

Now , lets not forget the other ways to get excess energy , like the back emf and tuned tank , to keep the battery going

Yeah, ok. The tuned tank is a little hazy still, not really seeing how that gets us excess energy, and the back emf that's another thing...
What exactly is so remarkable about back emf? From what I recall from the books, the "emf" phase is simply the phase in which
the magnetic field is built up or formed by the current as it starts to run through a coil. The back emf is simply the collapse of that
magnetic field. With a secondary, both phases induce a movement of electrons, and both phases are already used in every AC
transformer that uses rectifiers or diodes... So it seems to me that, if we first had a transformer which we build wrong so that
we neglected to use that back emf phase, and then later we add the back emf phase, then yes indeed the new version would
seem to produce excess output... But only because we used a flawed design before.
But hey, I may be wrong and overlooking something so please correct me if I'm off here.

, i don't care much for battery running with gain , because to battery will need to be replaced in the circuit eventually , so not that interesting to me.

LOL yeah well I would prefer a batteryless version too. A closed loop self-powering JT that produces usefull output, preferably of the
230V AC variety with oh Idunno 300 Watts of power? That would be awesome.
But untill anyone manages to actually close the loop, make a JT self-run without batteries, and still manages to pull output
from the secondaries, I suppose the battery version is easier to develop...
And if we could make such a self-charger with a battery switching circuit, it'd still take what, 2500 mAh before the battery needs
to be replaced...
Besides, in theory we should be able to run a JT off a simple salt water "battery", a lemon-, vinegar-, or earth- battery, a "crystal radio" collector,
probably even just the potentials collectable from two steel rods stuck in the ground. If we can use that to produce output pulses that can
recharge a battery bank (like those used to store solar power), we can probably run several simultaneously too, and keep a battery bank
charged which can power home appliances (through an inverter).
Yes, we'd still be using batteries for storage, but still, the input would be cheap if not free.

And that's assuming we don't have any excess energy eh... with excess energy would be even neater

On the banks subject, they are a bunch of thieving bastards! there you go, I said it.
Have you seen the film "Zeitgeist"? Ok it does mix religion, politics, 911, the banking system, etc,
into one big conspiracy ball to bounce around, but there is a piece in it about the international
and in particular the US banking system that is apparently an eye-opener to many people.
It sort of explains how the entire US banking system including the Federal bank and the world bank
is designed to increase debt and magically conjure up money by means of creative bookkeeping.
In every other sector of society that is called fraud, in the banking world it is considered normal.

Also, does anyone notice how much money is being pumped into the clearly improperly organised
existing corporate industrial structure and how little is done to punish the guilty parties (read:
the bankers who knowingly and willingly traded worthless mortgages and stock for their own
financial gain, to the expense of just about everyone else) and how little is done to reform the
structure so that it doesn't happen again?
Also, most governments seem to think that pumping money into large corporations to keep their
workers employed a little longer before the company is forced to lay them off is a good thing,
and they seem to think that the middle class needs none of this financial backing...
Which is weird because we all know that a healthy economy and society needs a relatively
large middle class, but the support goes to the upper class while the middle class goes
bankrupt and the lower class goes unemployed. Didn't the people in our governments learn
that kind of stuff in school? You gotta wonder...

@Cap-z-ro: got your bank emf joke but a bit late Does that stand for "evil monetary fools"?

@GeneralJim: I have a fairly effective anti-mouse device. It is propped up on a chair most of the
day but it switches on in the evening and hunts them down one by one.
It is called Fritz, the cat. I think it works quite well.

kind regards,
Koen