Joule Thief

[xee2]

@ dllabarre

Thanks for the report. I think your results are better than most because you are using more turns for your coils than most people do. That should give you more output voltage. To check your output voltage remove the LEDs and put a diode on the collector with the non-stripe end to the collector and then put a capacitor from the striped end of the diode to the emitter. Then measure the DC voltage across the capacitor. I suspect you are getting about 30 volts. That should light a lot of LEDs.

[electricme]

@Jeanna

@Bill jim etc,
For some reason I am not filling a cap. I filled those supercaps 2 years ago (like the pic 5.5v 1F) but for unknown reasons even though the dmm says just under one volt, the cap isn't filling to even close to it.
The cap seems to be all right.

jeanna

Strange you mentioned this, I didnt see anyone reply so I will throw in my opinion.
I have 2 of these SC, same voltage and Farad, I noticed my caps would seem to charge directly off a DC supply, but not off my JT.

I don't seem to have this problem with larger value SC, only this type above.
jim

[electricme]

@all,

Just a while ago I thought I might go and dooo something outragious, lol I grabbed TWO 1000uf 25v Electrolytics, soldered them in series.
Then I soldered seperate wires to the capacitors free ends.

To test this, I charged them up by my Bedini, disconnected them and shorted them out, BAM. OK it works.

Next I put the POSITIVE from the series caps onto the positive of my EB Bridge.
Then I connected the NEGATIVE from the series caps to a lead coming from my Earth Battery, BEFORE the bridge.

The Green LED (which was hardly lit) went out, then a couple of seconds later it started to glow, then it got much brighter than before, BUT, it began to pulse in time with the waveform on the scope.

By this time, I disconnected the aerial wire I had had cliped to it for over a week, the LED didnt loose any brightness that I could see.
I put my DMM on the output and it says 1.735 volts, SO How Come a LED that needs 3 v to turn ono by battery power, can light on 1.735 volts, from a EB.
Now heres another thing, the leads from my EB are very long, I will attempt to measure them tomorrow sometime.


I might say here, this is NOT using any Super Caps, only run of the mill electrolytics only.
It is running purely on the EB, nothing else is connected to it.

Next just to try something else, I connected another LED in parallel with the other one, and it lit also, soooo this is the first time I have lit 2 LEDs of my EB

This reminds me way back months ago when I was so excited lighting a LED off my EB and I could not replicate it again until now, at that time the room where that occurred was in darkness, I bumped the circuit, while I was taking that movie, the LED went out. When I turned on the light, the circuit had been altered by accident.
I never thought to connect it up in this unusual configuration until now.

I will post a TWV of this some where below

jim

[electricme]

@All,
Click on the paper clip to go to the flicks 
jim

[nievesoliveras]

Jesus

I   have not looked  at that topic ......
Here is a coincidence for you.

I  have been playing  with  a flyback transformer that  I  took out of an old monator   
I really wanted  to use  the core  from the transformer  to make a JT ............but the core  seems to be molded into the case .
SO ........ I  decided   to  try to make  a JT  with the transformer itself .

Looking  at the  pins  on the bottom ............ according  to   your  drawing   I connected  the  base coil  to pin1    The   wire that would go to B+  and the  2 wires from the coil that  are twisted together  is connected to pin  3  .
The  E coil  wire  is connected to pin 4.
The  output   ( secondary )  is  the high voltage lead comming out  of the top of the  transformer and  pin 10    If I remember right  pin 7 and 9  have high  voltage too .   I do not know if they  will  react as  separate  secondarys or  the same one .
I am  getting  113V  from  a AA battery .........not alot ..........but in the  range I was looking for.

Tomorow I am  going to  try  it with  a bit higher input  voltage .

The  power  this thing puts out seems pretty good .
I had been playing  with  a flyback / feedback network   earlier .
I   took  the JT out of that network  and  put  the  flyback JT in .....  My90 LED array is brighter ...........under load  I got  93.8 V across  the transformer ........after  a half hr I have lost .3 V

gary

Can you put that on a schematic Or take a photo? Also could you draw over the schematic already posted?  Or could you explain it over this photo?

@ll
Cogratulations to everybody specially to @electricme!!!

Jesus