Joule Thief

[innovation_station]

has anyone done any aircore coils to ringgggg the iron core  in the past useing a jt a really sipmle unit ...

induce a magic feild in the iron and allow it to colapse and collect from it  just find the right freq for the iron ring useing the air core one ..

kinda like the aircore jt and realy coil vid i shot...   

ist!

[resonanceman]

@all

I changed the transistor to a 3055 NPN and used a power supply at 9v
also connected instead of just touch, the pin #8 to a wire that was attached to the HV pkug with an alligator, leaving about 1/4" of gap.

And the flyback began a buzzing sound and I did it!!!!!!

It lasted about 10 seconds thoug, the power supply quit on me.
Another loss, but I did it.

Jesus

Jesus

How  did   you  lower  the  voltage going to  the base ?

I am not having  much luck with that


gary

[nievesoliveras]

Jesus

How  did   you  lower  the  voltage going to  the base ?

I am not having  much luck with that


gary

I used a 470ohm with a 104 ceramic cap acroos it. I started with 100k resistance and test down to 470ohm.
Also I used a green LED from the emitter to the base as if it were a pulse motor, then to complete the transistor protection I added a neon bulb between the emmitter and the collector.
Just as the bedini circuit but with a green led and a ceramic cap.

I worked for 10 seconds and then after throwing sparks from all pointy parts of the piece of board attached it died.

I checked the circuit with a joule thief test and worked perfectly.

there is a recommendation from the kapanadze topic, to add a good diode between the positive wire and the positive rail to safeguard the power supply.

I will eliminate the piece of circuit board and retry. Then I will try to experiment with the ignition coil.

Jesus

[resonanceman]

I used a 470ohm with a 104 ceramic cap acroos it. I started with 100k resistance and test down to 470ohm.
Also I used a green LED from the emitter to the base as if it were a pulse motor, then to complete the transistor protection I added a neon bulb between the emmitter and the collector.
Just as the bedini circuit but with a green led and a ceramic cap.

I worked for 10 seconds and then after throwing sparks from all pointy parts of the piece of board attached it died.

I checked the circuit with a joule thief test and worked perfectly.

there is a recommendation from the kapanadze topic, to add a good diode between the positive wire and the positive rail to safeguard the power supply.

I will eliminate the piece of circuit board and retry. Then I will try to experiment with the ignition coil.

Jesus

Thanks Jesus

I  tried  a few caps   across my resistor  but  I guess I  didn;t  try enough .
I  will  try  again tomorow

I am looking forward to see what  you do with the  ignition coil

gary 

[jeanna]

I put some parts I had together and this is what I got.

So xee2,
I am still unclear about what I would be doing if I connected the ignition coil.
I see in your drawing that this transformer is connected to the battery pos.

Is that what I would be doing if I connected the ignition coil to my joule thief?

And, can you please explain why you would connect the wires of the primary and secondary in a transformer coil like that?

thanks

jeanna

=====
Time warp
=====
Do you all remember hundreds of pages ago when Bill painted the inside of a plastic tube to make a cfl homemade style?

I have continued to wonder what they put on the fluoro tubes and how to get some or whatever,

I found a very good website by an interesting person. He says he is an engineer. The topics that interest him are all over the place... (I like this website, I guess)

So, he explains this stuff and the light bulbs stuff.
I copied just 2 paragraphs and here is the link to the whole site.

http://www.waynesthisandthat.com/glow.htm

and here is the info:

How Phosphorescent Paints Work:

Fluorescent paints are paints that glow only when irradiated by an energy source. A good example is the phosphor lining on the inside of a fluorescent tube. Current flowing through mercury vapor inside the tube creates ultraviolet rays that strike the phosphor. These ultraviolet rays knock the electrons around the phosphor atoms into higher orbits. The electrons immediately fall back down releasing the energy they absorbed from the ultraviolet rays as visible light.

Phosphorescent paints function in much the same way, except that once a light ray bumps an electron into a higher or more energetic orbit the electron gets stuck there. It's rather like a ball getting stuck in one of the traps in a pinball machine. It stays put until the plunger underneath the trap pushes it out so it can drop down to the bottom of the table. The temporary entrapment is called a metastable state. In the case of phosphorescent paints, what nudges the electrons out of the energy trough that has them trapped is random thermal fluctuations in the crystal structure of the pigment. This is why phosphorescent paints glow weaker but longer when cold and brighter but shorter when hot. An easy way to demonstrate this is to get some phosphorescent glowing and press it with your thumb for a few seconds. The area under the thumb will be heated and when the thumb is removed, will glow slightly brighter than the surrounding cool area.

----
My conclusion is if I could get a uv or maybe just a bright white light to shine up into a cfl tube, perhaps the phosphors would light up just like the regular bulb in the socket.

So then a jt with a led would light up a cfl.

I think it is worth a try. I have some uv's.
they are hard to see, so I haven't played with them much.
soon...


jeanna