Joule Thief

[innovation_station]

ok guys

i actually did some SIMPLE MATH 

im not so sure i should explain this

but with the next advanced MOD ... 

WE WILL ENAHANCE THIS EFFECT 1000 TIMES ....

IN A  TOROIDE.... 

now how can this be .... ....



i guess this CLAIM ... WILL REQUIRE AN EXPLANATION ...


just not right now

ist ...   

@jim .... i bet you know

[jadaro2600]

Ok, it's simple now

I have a 1 inch toroid with three coils on it, ..the one going to the collector is reversed relative two the two other coils on it; each of which is exactly half as long as the first coil.

The second coil goes to the base.  An LED can be put between the collector and ground and will light; The tertiary ( freely wrapped coil, which ) does indeed light an LED.  It won't seem to light LEDs in both places at the same time though.

I used a switching diode to rectify the current off of the tertiary and placed a 100nf 250V ceramic disk capacitor across the rectified tertiary coil and it's storing around 13 volts.

I'm going to try using the short coils in the circuit and the long coil for lighting LEDs now.

32ma ..which was hard to measure, it's not lighting LEDs when I measure the current by inserting the ammeter ( I'll have to use jeanna's method for measuring )

[innovation_station]

i have decided to build another coil ...

this  i will tune public ... in pictures ...

i will start with  a 7x7 turn pick up coil this i will wind first it will be bifillar ... 

next i will wind 2 jt coils the same dirrection around the ring... each will have 6 turns ... i will make the jt lite as usual jt does ...

then i will remove 1 turn from the primary jt windings ... 1 from each 

next i will take a voltage reading and compair the diffrance ...  the voltage reading for this tuneing test will use transformer action and kick action ..  ran through a full wave bridge rectifier built of high restisance diodes geramium .. 1700 ohms ... there bouts..

and if my voltage across the pickups has droped ... i will  remove another turn and repeate this process down to 1 turn and compair results

until i find what it is i desire ... i then will add aditinal  outputs .....

and add leds to restrict  the use of transformer action ...

ist

[Mk1]

@ist

Don't forget the trimpot and check the highest voltage point with the different turns , to make sure of the data.

[jeanna]

@MK1
And to add to the pic on page 125 was it? I must say, I appreciated your patience and I followed it and went on to other things. NOW, I realize that I had made both secondaries into one. I did all that with 1 secondary and I could have split that into 2.!!! So, I will now go back and check out what I got on EACH side.

I awoke this morning with a question. If you put the rectified voltage from just one of your secondaries/pick-ups into the battery rail of another joule thief, does it take the voltage up again to another level? If you get 24 rectified volts from one pick up, does it work the same as using a 24volt battery on another one? If it does, you ought to be able to light that cfl in no time. ??

@Gary, are you using a breadboard or are you soldering? I switched to breadboard back in January. It helped a lot.

I agree with MK1 try the one that works for right now. Remove the led that is in place in the basic jt circuit.
Then with as few as 4 to 10 turns in a secondary you can have a bank of 6 leds running. And they will be consuming no more than that first one does now.

Taking out the led from the basic circuit saves a lot in usage.

Here is what I think I do.

After making the toroid with the bifilar turns, I twist the opposite ends of the opposite wires as shown in the pic.
Then put that twisted set into the red rail of the breadboard.
Then I put the transistor into the breadboard and add the 1K resistor at the base and over a few lines to get it out of the way. Then I add one single wire of the toroid to that line at the end of the resistor.
Then add the other single wire from the toroid to the collector of the transistor
Add a jumper from the emitter to the black rail.

Now put a led in the lines of the collector and emitter. If it doesn't turn on reverse the led.

I think that does it. Please let me know if it still doesn't work.

Sometimes I have to push all the wires into the board a couple of times. Often putting one in pulls out another. That goes for the battery connections too. (Mostly this happens when I am doing a lot of testing, but if everything seems right and it still doesn't work, take out and recheck all the connections.)

jeanna