Joule Thief

[nievesoliveras]

Welcome to all newcomers!!!!

@electricme

Those things happen a lot!
Forgetting an important piece of equipment or an important part.

Just take it easy! And keep your mind busy, you'll be alright.

Jesus

[Koen1]

Koen

do you  have anything  on the shaft  of your motor ?

In the video  he had a good sized  white rectangular thing on the  shaft .
At  first I thought  it was just to make the   rotation more visable .........but it is much  bigger than is necessary for that ......I am thinking  it  is  working as a flywheel .   The  pulsing   is what is needed from the motor ......The mechanical power  it puts out  is no longer important .

No, I do not have anything on the motor shaft, it is bare.
I also noticed the white thing on there in the videos, but I'm not sure what it is for.
A second motor I have here, one I have not pulled apart yet, has a black thing that looks like a small pulley
or something attached to the shaft, so first I thought the guy in the vids also had something like that attached.
And I find it difficult to give the axle a good spin with my fingers, but I suppose with a small wheel attached
it would be a lot easier to give the thing a twirl to start the motor spinning, so I have considered that that may
be the only reason for such a fairly large thing on the shaft.
On the other hand, the thing does run a bit unsteady, which is not surprising with 1 of its 3 prongs removed
so only 2/3 of the drive coils work... I suppose a little flywheel could even that out...
So indeed, a flywheel is a good option for the thingy on the shaft.
I'll see if I can't find a little wheel to fix on there.

But perhaps this stuff on a pulse motor is more in place in the "feedback to source" thread?
I'll move my pulse motor remarks there, as to not clutter this JT thread further.

@all: I have decided I'm going to make an air-core JT now.
What do you guys think is the best way: a single wire primary with a bifilar secondary wound
around the primary, or one single trifilar coil where one wire acts as the primary and the other
two as secondary?

@IST: remember the carbon rod thread? What happens if we use JT ring cores around
the rod? Can we run a JT with its efficient LED lighting tricks, and at the same time
use the B field in the center of the rings to induce pulses in a rod, like the carbon thing?
What do you think?
(anyone else is of course very welcome to reply too eh )

kind regards,
Koen

[Bob Smith]

@all: I have decided I'm going to make an air-core JT now.
What do you guys think is the best way: a single wire primary with a bifilar secondary wound
around the primary, or one single trifilar coil where one wire acts as the primary and the other
two as secondary?

@ Koen,
Groundloop's RE battery charger works on a trifilar air-core setup.  Great RE spikes. Schematic here:
http://www.overunity.com/index.php?topic=4057.msg75477#msg75477
I don't see why the same principle wouldn't work for the JT. I think they're both variations on the same principle.
B

[innovation_station]

No, I do not have anything on the motor shaft, it is bare.
I also noticed the white thing on there in the videos, but I'm not sure what it is for.
A second motor I have here, one I have not pulled apart yet, has a black thing that looks like a small pulley
or something attached to the shaft, so first I thought the guy in the vids also had something like that attached.
And I find it difficult to give the axle a good spin with my fingers, but I suppose with a small wheel attached
it would be a lot easier to give the thing a twirl to start the motor spinning, so I have considered that that may
be the only reason for such a fairly large thing on the shaft.
On the other hand, the thing does run a bit unsteady, which is not surprising with 1 of its 3 prongs removed
so only 2/3 of the drive coils work... I suppose a little flywheel could even that out...
So indeed, a flywheel is a good option for the thingy on the shaft.
I'll see if I can't find a little wheel to fix on there.

But perhaps this stuff on a pulse motor is more in place in the "feedback to source" thread?
I'll move my pulse motor remarks there, as to not clutter this JT thread further.

@all: I have decided I'm going to make an air-core JT now.
What do you guys think is the best way: a single wire primary with a bifilar secondary wound
around the primary, or one single trifilar coil where one wire acts as the primary and the other
two as secondary?

@IST: remember the carbon rod thread? What happens if we use JT ring cores around
the rod? Can we run a JT with its efficient LED lighting tricks, and at the same time
use the B field in the center of the rings to induce pulses in a rod, like the carbon thing?
What do you think?
(anyone else is of course very welcome to reply too eh )

kind regards,
Koen

i think i have a few carbon rods 

i will have to try it..... makes sence tho ..

i will finish the mk2 family .. and few other things i have on the go first tho ...

my leds  in the unit under test are .. finally out ... the batteries are drained it took over 20 hours ....

at some point today i will recharge the secondary batteries and repete the test ... with the same aa battery

i have all the mk2 coils wound 1 turn to 5 turn primary jt all have 7x7 ...  secondaries   so

today i will build crystal fullwave bridges  for all of the coils ...  each coil requires 5 fullwave rectifiers ... that is 20 diodes x 5 or 6  coils   

i was ya know maybe thinking i would run the mk2 family torides off the secondary of my last unit 

1 coil feeding 5 or 6 i have not decided yet ... most likely 6


ist!!

[resonanceman]

Gary:

Electronics goldmine has them 1" OD x 1/2" thick....5 for $1.00.  Very good price.  That is where I got most of mine.

http://www.goldmine-elec-products.com/prodinfo.asp?number=G6683

Bill

Bill

Thanks for the  link.

I found  a few other things on that site that  I have been  looking for .



I saw that  they  have  super caps there.
Do you know if super caps can  be put in series  to get  a higher effective  voltage? 

gary