Joule Thief

[altrez]

Looks good Bill!

-Altrez

[electricme]

@Bill and All,

Thanks Bill, you are very welcome, glad I could help you.
After we hung up, I went back through the steps I had taken you through, took some photos of the wave forms and I will post them here to give you a better idea of what was hapenning at my end.

BTW, in the middle of this exercise, a bird decided to take a dive down my stainless steel chimney flue so I let it out at intermission, Bill could hear it flapping around in side the tubeing ha ha.

OK all, the following photos are mainly for Bills benifit, but they relate to the Joule Thief (basic model) so here is what I was seeing and describing to Bill, walking him through his/my CRO settings
These will not be identical to those that Bill saw, as we have different JT configurations, but will give an "indication" on what one should see displayed on their CROs.

In all waveforms, the earth lead is connected to the Battery Negative / earth reference point.
The CRO point, being set at X10.

The first 3 jpgs are the waveforms when the probe is connected to the Transistor Collector.
earth.

0787.jpg CRO probe connected on transistors emittor leg
0783.jpg = Volts/Div = 20mV         Time/Div = 1 uS
0784.jpg = Volts/Div = 50mV         Time/Div = .5uS
0785.jpg = Volts/Div = 10mV         Time/Div = .5uS

0786.jpg About the best I could do showing the layout of my CROs switch settings

0788.jpg CROs probe on transistors base lead
0789.jpg = Volts/Div = 50mV          Time/Div = 1uS
0792.jpg = Volts/Div =   5mV          Time/Div =.5uS

Bill hope these are of some help to you.

jim

[Pirate88179]

@ Jim:

Evidently we posted at the same time.  Go back up a post and check out my scope shot photos.  They are very similar to some of the pics you posted.  Thank you again, this is so cool!

Bill

[innovation_station]

IST ....  IS HAPPY TO SEE.... 


ARE WE READY FOR THE IST EATHER SPINNERS ...  ?!?!?!

RUNNING ON MY ORBIT ENGERY ? 




WELL   I GUESS YOU BETTER RINGGGG MY DOOR BELL WHEN YOU GONNA RING IT WHEN YOU GONNA RINGGGG IT ?!?!?!?!

THE WHITE STRIPES ... 

YOU WOULDNT BELEAVE THE REALITY OF MY DOOR BELL 

SO YOU MUST LIVE IT !



http://www.youtube.com/watch?v=vpwDv2ZFsIQ&feature=related


WELL WHERES THE NEXT SH!FT WITH YOUR KIDS..
ITS NOT THE MAN IN MY LIFE I KNOW

I BEEN GOING WITH MY MISTERY MISS
AS I WAS FIRSTLY ON WITH THE SHOW ..

TAKE BACK WHAT YOU SAID LITTLE GIRL ...
AND WELL YOUR AT IT TAKE YOURSELF BACK TOO!

I WISH I COULD SHARE THE REALITY OF THIS SONG WITH THIS WORLD..

ONCE UPON A DAY!!



IST

http://www.youtube.com/watch?v=LIf3a72f4lo

IM RIGHT @ HOME ..... 

[electricme]

@ Altrez

I'm sure it wont be long before you will become an expert with the Velloman scope, I saw an identical one in Jaycar when I was in Brisbane just 2 days ago, I'm very sure Jeanna will be able to teach you well in it's usage, well done Jeanna.

Al, many many many (I lost count) moons ago I was powering a huge 5 inch torid in a similar fashion as you are doing.
I used the secondary of the Joule Thief to power up the second torids primary, which it's secondary was rectified, fed into a cap and I managed to get a 12v DC fan to spin up but it would stop after a few seconds.
It seems you been able to get more energy out of your setup, well done.

I made a TinyWeinyVideo, and posted it here on this forum, so I can understand you being "excited" at your success, Bill's a bit excited isn't he he he, don't think he will get quality sleep tonight as he has found out what his cro can do now.

I still have my original setup, I will post a photo of it so you can compare it to yours.

@ Gadget,
Thanks you for all the good references to my little gift to you, thats OK, no worries mate, if anyone wanted to avail themselves of one, see Gadget, he swares/raves by it ha ha, plus, you carn't have enough tools to do the job at hand.

jim


@Altrez
here are a couple of photos of my setups.
0793.jpg = My 5" toroid which I see you have almost replicated the winding positions to mine.
0794.jpg = This is the setup I used to drive a 12v DC fan motor, but I only could get to run a few seconds.
The toroid is a specially wound one, it has 12 "outs" or "taps", with this I can "select" any of the 12 energys avaliable to play with.
 
jim