Joule Thief

[Artic_Knight]

Sure. I need a break right now so I will draw it. It is just temporary, but I will. I am not sure what I said that makes it sound different from what I have done in the past, but I know it is easier when there aren't sooo many words.

I will edit this post with it in a bit.

jeanna

thanks jeanna your the best. it sounds fairly standard but i just want to check and see the turns vs resistors and caps to check my settings and see if were doing the same things since i dont have access to a scope at this time i cant tell what my freq is so this will give me an idea. and id love to tweek with the coils like you were to see the voltages change and learn more that way. 

im playing with the tesla bifiliar coils, if you get a chance you should try! they are amazing! they will most likely increase your effeciency greatly!  i would say figure out the number of turns you need to hit your voltage and change that to a bifiliar and see how that affects your output. remember if you do this to use a regular wound pickup coil and a bifiliar output (if your moving it to another torroid or transformer)  but 2 bifiliars for the base and collector should get a good result!

[resonanceman]

I got  Jesus;s  basic chargerJT running
I used 1n5408 diodes  and a 1uF cap  becuse that is what I have .

Like my  flyback  circuit it will not keep up  at  max  power .
At .09A  it nothing changed except my battery  draw crept  up  to .11A
As  it crept  up  my meters started  winding down

At .04 A  battery draw it seems to be charging well .
I think I am  going to have to  change  the  battery
It went up   nice and steady from  1.207  to  1.273  then stopped
Ny secondary  went from  2.189 to   2.814  then started  dropping  slowly .
The  battery was  well  charged when I started
I will  drain a battery  a little and  try it  again .

A lead acid  battery will  follow  a similar pattern  as it is reconditioned .  It reaches a max voltage then  the voltage drops a little  as the  internal  resistance of the battery  drops .


I used  a electronic Goldmine 5 for $1 toroid   with  a basic   MK2  with a small  secondary

It  will be interesting  seeing  if my LMs  work  the same with it .

gary

[TheNOP]

@nop

Multi signal yes but single freq tuner ! i guess you need 3 to have some fun , maybe 3 diode radio but they would need to be tune to a something better then radio stations .

radio waves are all mixed in space and you need to tune to receive the frequency you want.

actually a radio receiver is tuning to a narrow band of frequencies with the exact frequency being in the middle of that band.
in some military radio receiver applications they tune to more then just one carrier at same time at an even narrower band frequency.
they split the informations(data/video/audio/etc...) through all the carriers.

the way radio signal are demodulated require a base frequency mixed with the selected frequency to extract the audio signal.
that audio signal itself is a multitude of frequencies in the range of 1Hz to about 22kHz, if i remember right.

FM synthesizer(sound card) are using 3 frequencies to modulate sounds.
a carrier frequency, a modulation frequency and a modulation index.
you can also play more then one note at a time.

the effects or phenomenas that happen in the audio frequencies range are known.
there are also phase shiftted frequency(ies).
they are used to create ambiophonic, surround sound, etc..., and in FM demodulator.
while they are same frequency(ies) the phase shift actually make them a separated thing that interact differently, even with the same unshiftted frequency.

the thing is that these effects and phenomenas apply to any base frequencies, 1HZ to infinity, given you mix it with the proper other frequencies to get the effect/phenomena that you want.
so saying much is need to be discovred about AC is not quit true.

the possible interaction of mixed frequencies with our environment and/or various materials, are not all known, some are tho.

for some materials it might be known.
but any kind of data is not easily acessible when there are no commercial interest potential in view.



@gadgetmall
you seem to assume that 3 frequencies are the whole thing about the tpu.
and that the reason why the tpu is still an utopie is due to the fact mixed frequencies are not fully understood.
i am probably wrong about this, but it is the impression i have about what you wrote.

what i am assuming about the tpu is that the frequencies are only one of the things that could make it tick.

the problem is that we are both assuming about the tpu.

[jeanna]

im playing with the tesla bifiliar coils, if you get a chance you should try! they are amazing! they will most likely increase your efficiency greatly!  i would say figure out the number of turns you need to hit your voltage and change that to a bifiliar and see how that affects your output. remember if you do this to use a regular wound pickup coil and a bifiliar output (if your moving it to another torroid or transformer)  but 2 bifiliars for the base and collector should get a good result!

OK I made the drawing with some numbers.
The high frequency was with 33 ohm on the base resistor.

I am not sure what you mean. I am ONLY using bifilar.

The primary on a joule thief is a bifilar and

the pick up on the MK designs is also bifilar. I prefer the MK designs to any others.

I do agree it will improve efficiency greatly. I have been getting that improvement. I have a powerhouse with the 2 tier. I am a beginning self taught electronics student. And my interest is in ac.

Do you have a camera? It would be terrific to see one of the things you have made.

jeanna

[TheNOP]

I  have heard that the big  difference between  rechargable and  non  rechargeable  alkaline  batterys is that the  rechargeable   have better seals

they are not made from the same materials.

alkaline batteries will, in a normal charger, heat to the point they leak or explod
this due to the materials expension and/or inner gases production, while being charge, that is greater then the material used in rechargables.

unlike rechargable, the materials used in alkaline have limited charges reversal capabilities.