Joule Thief

[electricme]

@ TheNOP
Thankyou, I understand this.

yes, you can view current behave like this.
but current depend on a few things.
a sure thing tho, you won't have more current then you can put in.

for AC/pulse DC you have the coil's impedance and coil's configuration.
for DC, you have the coil's resistance and coil's configuration
it can be multi layered but in that case you must use the proper method for windding it.
looping from start to end of the coil's form, go back to start whitout looping,
then loop to the end again.
repete this till you have no more wire left to wind.


yes, if 200 turns give you 100volts and you make it in 4 coils you will get 100 volts out of them.
but if you connect to only one of the 4 coils you won't measure 25 volts on it.
since the impedance of only one coil is smaller, the voltage you will measure will be higher.

you can also use capacitor(s), it is the same thing.

Thanks for this reply, I had been toying with this for a while now, I have posted a pic of the windings called a "yoke" I took off a "redundant" TV or PC monitor. It shows exactly what you said.

Thanks.
jim

[electricme]

@Resonanceman

Please  feel  free to  remind  us  often

Anyone  dealing  with these kinds  of  voltages needs to  stay aware of all the ways  things can go wrong  .......... 
~~~~~~~~~~~~~~~~~~~~~~~~~
I  am  currently  demoting    a microwave .
Hope to  be back in  an hour or so .

Jim  and IST

Just  to be sure ......   are you both saying I  should   put the  2 MOTs   back to back  ........so I will be   boosting the  voltage with the first .......feeding that  into  the   HV of the second .......in effect  lowering   the voltage back down ?

Then  a  spark  gap  with a  Neo magnet     between  the  MOTs  should   boost the current ?

I am  also  wondering  if   my  coils would  make  more flyback  or less  at the higher  voltage .         I am guessing more ....
gary

Gary,
I don't know if IST has answered.

Careful removing the steel parts, inturnal covers etc, they are very sharp, I have cut myself at times.

When you "demoting" a microwave,
FIRST,  SHORT THE BIG HV CAPACITOR OUT,,, BEFORE YOU DO ANYTHING ELSE

Use a insulated screwdriver, and touch the terminals on the cap MANY TIMES at least 10 times, as these things can "recharge" themselves, just like a 1.5v AA battery if left alone. Hold the screwdriver against it for a long time, bleed off any charge.

Then pull the wires off the capacitor.
----------------------------------------

You mentioned several posts back you were getting a "1/8" inch spark out of a JT, just put this spark into the HI Volt windings, they will be the finer wire coil.

Thats right Gary, we need to reduce the HV to get a lower voltage to play with.

If you get "blue" sparks, then there is a good chance you are in the aeather  stuff
If only orange sparks, then you have ordinary electricity stuff.

jim

@TheNOP
Is it possible to have 2 types of electrical energy circulating in an electrical device at the same time?

jim

[Pirate88179]

@ Jim:

I have already said I am not going to fool with a MOT at this time....BUT.....I was thinking..(here we go) if we are really looking for high freq. then, what could be higher than the 2.4 GHz of microwave freqs?  Maybe we should use some other components from the oven as well?

I do NOT recommend anyone do this as the microwave oven is itself a Faraday cage to protect folks from these harmful radiation frequencies.

But, I was just thinking........

Of course, I live near an airport and it may interfere with the local radar towers......

Bill

[electricme]

@the_big Lee
Hmm how to answer this lol

electricme said and drew this:
@electricme,

I read the rest of your post and agree wholeheartedly. 
Very good drawing; I was thinking of doing something similar and re-drawing Tesla's patent drawings in ASCII like you did above in modern symbols---in a new thread forum in Half Baked Ideas---but readibility in the Windows Operation System is going to be an issue for me to deal with.
(I have a whole book on Tesla's inventions to use as a reference.)

Next thought,
Your drawing above is something I had considered in the past to be able to step up voltage(s) partially for certain applications requiring specific voltage(s).  But in regard to CEMF, is there counter-counter EMF in the second transformer to contend with?  Will it work against itself? 

I admit ignorance:  Was this even a consideration you might have had?  It was just something that crossed my mind.

--Lee

Thanks for those kind remarks Lee, and thanks also to all who have posted.

No, this is a case of throwing my hands up in the air, and just putting on paper what I think, this means the electric text book got chucked out as well.
Sometimes one has to go with a GUT feeling, and new ideas, before making any progress.

But when Gary said he had made 1/8" sparks feeding a JT into his iron transformer, then whacko, it just came to me.

I have NO idea what you will find in regard to effects of CEMF or EMFn the transformers, you know as much as I do, probably much more in fact.
I'm just a GOF, (Gerryactric Old Fart) who dosent know any better, and likes to push the new ideas in place of the older ones.

I remember IST had been mucking about with a set of 3 phase MOTs and I got the idea from there, TA ist.

Actually, Gary is moving so fast that I carn't keep up, well done Gary.


jim

[electricme]

@All
Now, this is interresting stuff
HOW TO MAKE A HIGH VOLTAGE PROBE that will fitt the DMM

http://www.repairfaq.org/sam/hvprobe.htm#shvdx
http://www.repairfaq.org/sam/hvprobe.htm

or  http://www.caltestelectronics.com/www/default.asp

or    http://sew.com.tw/p16.htm

or  make your own "electroscope" see below
      http://www.ece.rochester.edu/~jones/demos/electroscope.html
      BTW, dont use a metal ruler as the gauge, wood or plastic is better.

or  for those who would be interrested how a home made 250KV probe was made, try here
     http://rimstar.org/equip/hv150kvprobe/hv150kvprobe.htm
     it even has 2 built in corona safety devices.

Ohhhhoooo I had a Fun Fun day.

jim