Joule Thief

[Pirate88179]

Gadget:

That is a real nice box you have there, it will make a great Jeanna Light.

Jeanna:

The best LED diffuser I have ever seen can be found on the hand crank 15 LED lantern sold at Harbor Freight.  I have bought 2 of them so far. ($9 ea)  I sent one to my Mom in FL so she could have light when the power goes out during hurricanes.
It is hard to describe but it is a cone shaped reflrector that seems to have a reverse parabola shape to it such that the light from the LEDs hitting it from the bottom gets sent out in all directions 90 degrees from the light source which means out all side of the lantern.  It is fantastic!  You crank for 30 seconds and get 30 minutes of very bright light. It has settings for 5, 10, and 15 LEDs to vary brightness.  If I can find a photo of it, I will post it, otherwise I will try to take a photo.  It is a brilliant (no pun intended) design.  Since all the light is reflected and refracted, you don't lose any like with a shade or other similar methods.

Bill

[kooler]

jeanna
back when you was using the inductors did you ever try using diodes and caps like in the picture mk1 posted
i have that ebook.. but i thought it was aircoils so dumby me never got any good results
but thats been awhile back
so i might have to buy some inductors

robbie

[jeanna]

@Bill,
You are right about how bright those lanterns are.
I have seen them, in fact I have one somewhere.
It is all the more brilliant because it is using only one light. (mine is)

I guess what I mean by the word diffuser is a material that will make the light glow without lessening the total brightness. It is sort of like a frosted bulb instead of a clear bulb.
They give a different kind of light.

If you are reading it is great to remove the diffuser and point the led directly at the page, but to light up the whole room, it is better to have a light that is spread out.

Meantime, I should paint some walls white so they reflect the light that hits them.

Good point
Thanks for bringing it up,

Good news,
I just got the invoice from magnetics. The invoice date is Nov 9th.

jeanna

[innovation_station]

hello
my next video was going to be of me running it thru a 1:1 toroid about 30 turns on both sides
it only shows a couple of volts on the meter but when you bridge into a cap you would be surprised

and yes i do like sparks and things that go boom!!
but, no the spark is to show the volts output that a normal meter can't read
if you seen the the microwave transformer... that spark has some current in it...
and yes it charges caps very fast.. its only 10 lbs.  hahaha

i do have other HV stuff but i don't think it is safe to show on u-tube ( it messes with my camera)

xee2
the only way i could get a toroid transformer to charge my cap fast enough i had to bridge it
and also i notice that larger triac and scr's steal from the output

i have found the same ... and aswell on the scope when tuneing with the scope .. is worthless ..

you do not need it to tune your coil useing a bridge and a cap! volt meter .. all i ever used .. lol

peace!


great work ..

more more more ... 

lol

ist!

@ j if you get board .. you can come paint mine ...  i just got the darn walls built and it was annoying ...  not much a painter my self ... lol

[jeanna]

jeanna
back when you was using the inductors did you ever try using diodes and caps like in the picture mk1 posted
i have that ebook.. but i thought it was aircoils so dumby me never got any good results
but thats been awhile back
so i might have to buy some inductors

robbie

Yes.
The specifics are sort of on the "ac from jt" thread.

The wires I was using called S1 and S2 are both being fed identical pulses. and it can be seen that they are each receiving the pulses sort of like the A ends
I don't have anything coming OUT of the system like the B wires, but the lights I keep adding are using up what would be coming out.
The amount of lights grew from 10 to 30 as I added more inductors and caps...(I had a few more but I am not counting them because they weren't as bright.)
A difference is that I never had any caps by themselves.
I did not have much in the way of results until I used a 1.35mH inductor which was a half of a toroid filter.
It gave the whole business a big boost.

My original 2 tiered circuit was made with 2 fully wound jt toroids, and it took me a long time to realize that they were great inductors too.
I tried all the wires and found that the secondaries were the best.
I had 3 helmholz inductors like jadaro's , They were 220uH. They were fine in some places, but the secondary wound toroids were around 550uH-700uH, and they were great.

I didn't realize that caps would help because they never helped the light directly connected to them, but they helped the circuit as a whole.

The only diodes I can be trusted with are the light emitting kind, 
and so there were all these elements and they are sort of strung together in a way like that diagram from Mark's book.

thank you,

jeanna

add:

and yes i do like sparks and things that go boom!!
but, no the spark is to show the volts output that a normal meter can't read

That is great to know thanks.

if you seen the the microwave transformer... that spark has some current in it...

How do you say the MOT has amps in it?

thank you
j