Joule Thief

[innovation_station]

i was gonna make this post earlyer but i for got but j's words triggered it agin ...  \


ok  j i do agree ...  transistor deturmans ma draw ...  that is clear with my toys too
i think what may need to be done  is match a pulse coil with ma draw...  kinda like impeidance matching ..  4 ohm amp 4 ohm speeker!  ya know what i mean ?

so if transistor draws 20ma  you want a coil that only handles 20ma at any freq...   

just another thought ...    maybe use a 12vdc relay coil ...  i may try that in a bit ...  if it was a bifilar coil  i would find a feroite bar and 2 week magnets and do the KOOLERIZATION TO IT ...

it would look like a pair of glasses for the eyes...  lol

ist!

http://liberty92.files.wordpress.com/2008/02/smaller-anders-with-google-glasses.jpg

lol

google glasses !

[xee2]

@ jeanna

The cfl will light, it only needs about 500 volts and all of these circuits are putting our more than that. I did happen to test 2B-6C-250P and cfl lit.

[jeanna]

thank for the clarification , There is still the fix resistor value i wonder about jeanna?

Also i have to say i don't like 26 on the jt side , i always use 22 it works so much better , i don't know it its the size or insulation making a space between the wire and the toroid .

Mark

I understand that when you want to know the highest possible volts from the number of turns that you must change the resistor.
But
If you are wanting to learn the effect of the number of turns on this toroid to the volts you must keep the resistor the same.

Then when you find the best numbers of turns you do a test and find the resistance that works best on this toroid with this permeability.
It makes it more than too confusing to change more than one thing at a time.
So, I say it must be done in separate steps.

About the wire gauge,
the 22 awg you get from RS comes with the extra thick varnish.
The 26awg from RS comes with a thinner varnish but not as thin as the 30awg.

The gobrushless 25awg comes with the thick varnish like the 22 awg from RS.
It is actually hard to scrape it off.

I recommend the newby wire (what it is called) because it has the thick insulation and also because it comes in 3 colors so you can use the same thickness and distinguish them from each other.

This is a worthy discussion.
Is anybody else making these tests?

thank you,

jeanna

[jeanna]

@ jeanna

The cfl will light, it only needs about 500 volts and all of these circuits are putting our more than that. I did happen to test 2B-6C-250P and cfl lit.

Yes, I realize this, but if you want to turn on a higher wattage cfl or a fat tube, you will need a higher voltage so you can use these bulbs as a kind of indicator light. So, that is why I asked.

thank you,

jeanna

edit

@ist

ok  j i do agree ...  transistor deturmans ma draw ...  that is clear with my toys too
i think what may need to be done  is match a pulse coil with ma draw...  kinda like impeidance matching ..  4 ohm amp 4 ohm speeker!  ya know what i mean ?

so if transistor draws 20ma  you want a coil that only handles 20ma at any freq... 

Thanks for verifying this, ist.

I do not know how to match these things.
I do not know what to look for, or what tools to use in testing.
Can you or anybody explain?

thanks

j

[gadgetmall]

@Albert (Gadgetmall)
I have a spare portable oscilloscope I am happy to send you (you can keep it). I haven't used it for a while and it is a dual trace. this might help you to measure more accurately or possibly explain when you get some abnormalities. Email me markdansie@bigpond.com and I will post it over.
Kind Regards
mark

MY Gosh . You are one of the  kindest person i don't even know but I know i like you and will say a prayer for you and yours blessing your for thinking of me  . No Thank you I have a scope . I haven't even unpacked it since i bought it . (Shame on me ) I don't know what to do with it as i am already tuned in on most of these devices . I have always had a Gift . This sounds crazy but everyone calls me when something is wrong and 80% of the time all i have to do is touch it and it works . i know you think I'm a nut . I would too but it has happened over the last 20 years or so and i swear to you people call me for Miles and miles away and trust no-one else to work on there stuff . From Tv's ,satellites ,radios ,computers anything electronic I can fix . Even appliances ,refrigerators ,washingmachines , Toys , you name it . I have several Gifts and one of them is being able to read people if i see them . I can see aura's  Some are white some are blue and some are rainbow and some are red and some people don't have one . My cousin has the same gift . we can see the exact same aura around people .It was amazing to have a person beside you and say look at this person can you tell me what color his aura is , she said rainbow  I saw it before she said it and we sit there in church and say that person has a white one and some have extremely bright auras .. I can also say that most people here that work with there hands and enjoy electronics experiment all have gift . I bet you 90% of all you experimenter play some type of musical instrument like i do . Bet ya ! Its a fact i can feel it and as i said mos of us are very talented and we are a special breed of people much like "HEROS".  Here is My Digital Storage Scope . During My life i have had 5 Scopes . I still have two in the Barn . I got them when i was around 8 years old . a man put them out for trash and i asked if i could have them and he said take them home and before i did he took them in the house and showed me how to use them . They Still work , but they are old and tube type .. one is very heave and the other is tiny What do you want to me to measure with them ?
Albert