Joule Thief

[jeanna]

@Altrez,
WONDERFUL
Is this not very satisfying.?
It almost fits perfectly in an altoids box. Protect it from touching the metal and nail it to the fence!    Patio lights

@Amigo,
It is very hard to respond to you when you come here and tell us about someone else's work and how he does so and so and changes it by such and such method. What you say is probably fine, but it is so not what we are doing here that it is too hard to respond.
The Tesla patent is a different one
462418
He specifically states that any kind of bulb will work.specifically a carbon filament bulb (I assume of the edison type) will work, although he prefers the one he has made himself. It also works on a motor.
This patent is earlier than the one to which you refer.

@All,
I was recharging my scope batteries today. I really need a power supply wall-wart to recharge them at night!

I took out some turns on my filter as suggested by MK1 last night and tested it for
frequency and
voltage at various
resistances at each new number of turns.
This is only the primary jt turns I am changing. It is the MK_2x split primary type I am testing here.
(I am using 10 up and 10 down just to take a reading. I will make a full on MK1-2x tonight or tomorrow.)

MK1, you were right the fewer turns does give a better mix.

In light of finding this #462418 patent, I noticed that INDEED, as the resistance changes (goes up in this case) the  frequency goes up, and the voltage goes down, given the same number of turns of wire. It is not ohm's law (a quick look tells that) however, the relationship of the frequency to the volts and resistor is similar to what it would look like using amps in the equation. NOT the same equation for sure. (hmm.)

Here are a couple of examples:

with the same wires arrangement I got
105kHz
56V at
795ohms on base resistor

or changing the resistor
111kHz
53.9V at
975 ohms on base resistor

and for another example, after changing the wires

117kHz
52V
975ohms at base resistor

and changing just the base resistor
45kHz
95.4V
36ohms at base resistor

So, I can get higher frequency or higher voltage.
One goes up when the other goes down.

More art. 

jeanna

PS I just got my newbie wire. It looks beautiful. I'm ready to roll!

[TheNOP]

what is DC and what is AC ?

AC is a DC currents that is switched in polarities over a period of time, it is not a sharp switching.
the higher the AC frequency, the higher the number of changes per unit of time.

does higher frequency AC have more guts then lower freq AC ?
yes, and same for pulsed DC

for 60 Hz, the maximum currents is reached only 120 times per second.
the ultimate currents guts is pure DC, but it does not have the same properties as AC.
ex: with pure DC, induction only happen when currents is first applied,
it do nothing in term of induction once it is flowing,
there are no capacitive coupling either.

one other thing, else then when currents is first applied, AC = no inrush currents.
and no mag field collapse either, the mag field is forced to change over a time period.

[Artic_Knight]

everyone here has a different perspective of where this "should go" to attain results,  im sure no one is disreguarding high frequencies however i would like to know why they would not benefit the work?  a frequency is how often it cycles and we would want as much frequency as possible to attain more results faster. with voltage well lets just say the less amps you use the smaller the wire can be, high voltage is the way to go to keep wires smaller and watts higher  

my thoughts is, if it worked for tesla back in the day it will work for me! and that man LOVED some high frequency high voltage.

cheers

[TheNOP]

Here are a couple of examples:

with the same wires arrangement I got
105kHz
56V at
795ohms on base resistor

or changing the resistor
111kHz
53.9V at
975 ohms on base resistor

and for another example, after changing the wires

117kHz
52V
975ohms at base resistor

and changing just the base resistor
45kHz
95.4V
36ohms at base resistor

So, I can get higher frequency or higher voltage.
One goes up when the other goes down.

did you look at the currents too ?
the frequency will be lower with the pickup under the load of your ampmeter.

and what about when it is 1.40kHz ?    

[hazens1]

Took the same 20-20-80, 3/8 inch toroid Christmas coil from my previous posts and dropped the resistor down to 1k and changed the transistor to a TIP31 npn. I measured 100v rectified across a 200v, 22uf capacitor. Charge stabilised after approx 1 minute. So I removed and discharged the cap and proceeded to hook up 25 LEDs in Series and here are the results. Total current draw loaded is 53ma and the LEDs are pretty bright too. I would compare the brightness from each LED as if it was  running off 3.6v, 20ma continuous DC each. Almost blinding 

I noticed something when measuring using capacitors. Appears that my DMM does not measure peak voltage since when I remove the cap the voltage measures 70v and the cap measures 100v. I'm guessing the cap charge maxes out at the peak pulse voltage and the DMM is measuring an average voltage rather then a peak voltage when measuring pulsed DC across an unknown time period    I checked my DMM manual and could not find any documentation that concerned pulsed DC measurements.