Joule Thief

[jadaro2600]

My latest setup involved a free coil around which a second path coil was wound - ie, the ferrite core was replaced with a copper coil, and this was then wound with a smaller wire.  The basic output of the LED didn't change, so i've assumed that my first setup was just as bad is this latest one.

Further explanation:  The red coil is wrapped around a green coil on the inside.  There is no ferrite core.  The camera flash is overcoming the light from the LED..obviously.  The gage of the red wire is higher than the green wire.  The red wire is acting as the pass through voltage collector. I haven't tried to reverse the configuration with regard to which one is collecting voltage.

Any suggestion on how to measure the power consumption and where?

[Mk1]

Yes, that sounds like the standard "law"...
What I find most interesting about the passage is the remark about telephony;
I suppose this refers to the seemingly chaotic interference patterns that led
to the discovery of fractals (Mandelbrot?), which was a direct result of a
study into these interference phenomena in the phone lines.

What's missing? I'm not sure... Do you mean they don't mention self inductance
(emf effects) perhaps? Surely that phenomenon is also described on that site?

@all: I pulled apart a little DC motor and ripped one of the three prongs off
like the guy in the "charging 2 batteries from 1" youtube video did to turn
it into a pulse motor. It runs a bit unsteadily but it does run, and according to
my multimeter produces 30kHz pulses (give or take a few kHz).
I thought this interesting as my meter says the modified camera curcuits
I use to play with CFLs also produce a frequency in the same range.
Have not yet built the simple 6-battery setup the guy shows so I can't
attest to the "splitting the positive" yet, nor have I tried hooking a JT up
to either input or output side of the motor yet. I have noticed that the motor
slows down and often halts when my meter probes are attached, while
it doesn't when the meter is not hooked up, so the meter seems to mess
up the pulse action a bit...
Anyone for some suggestions? Always welcome. 

regards,
Koen

The part that is missing is about more than 1 secondary coil, all coil have the same current.

@ist

Good work! i got something else for you ! Where are you!

[nievesoliveras]

@all

I finished reading the posts just now.

Welcome new members!!

Welcome @resonanceman
Long time no see you. Since the electrinium.

Jesus

[innovation_station]

something else i like to say .... 

my secondary recoveries are STILL BURNING 6 LEDS ..... 


they are not drained it has been over 8 hours!!!!!!!!!!!!!!!!!!!!!!!!!

lol

ist

ok guys it is time for everyone to catch up

in the jt mk2 style i was tuneing i had constant 16 v for the last many hours on my out put with my jt led lit bright...................

i removed the jt led WHAT WAS THE RESULT?!?!?!?!?

LOL


65 VDC  instant jump across my secondaries ...

NOW I WILL RE TUNE IT  WITH THE 15 TURN 1K POT TO FIND THE PEEK VOLTAGE OUTPUT

MY UNIT JUST PEEKED 76VDC

if i could get the voltage to 110 vdc it will light the cfl un mooded ... as i currently beleave 

the reason i say this is because i just lit a 7w led that uses 110vac un modded .....

the thing is i have over 30 of thease exactly the same toroide core

i will be able to tune it right up

yes the bulbs still burn im draining out the batteries compleatly dead then i will repeate the test on a TUNNED TOROIDE

AND SEE HOW LONG THEY TAKE TO RECHARGE FROM 0 RESERVED POWER

[resonanceman]

something else i like to say .... 

my secondary recoveries are STILL BURNING 6 LEDS ..... 


they are not drained it has been over 8 hours!!!!!!!!!!!!!!!!!!!!!!!!!

lol

ist

ok guys it is time for everyone to catch up

Congratulations   

I am working  on catching  up.

I  ordered parts for some JTs  I  should have enough  stuff  for a dozen  or so ........ except for  wire and  toroids ....... anyone  have  a link for a toroid  that works  well?


gary