Joule Thief

[Mk1]

@Jeanna

Yes , i did have trouble replication the 67 volts on each side, But this is because the toroid is bigger and its optimal working freq is lower,
I managed 45 volt on each side (24turns each 16 gauge) , by tuning the transistor freq the resistor is about 50 ohms , My last project is the same under powered toroid but with 30 gauge and made as many turns as i could , one side is complete the other is not , I have to count the turns, there is more then 100 turns , I don't know how many. I may have to start over , since i forgot to count them in the first place. More detail
asap.

Mark

Edit ; the reason i got lower voltage may be wire gauge resistance factor, but the bigger toroid has less output but more space for turns.

[jeanna]

@Jim,
Yes, I had. I was wanting to ask. I'm glad you did.
I just happen to have an extra.(I copied them a year ago onto my desktop. I lost some stuff, but not the cheesy smile)

@xee,
I would like some others to replicate these in an orderly fashion (I mean with the same transistor and toroid centers)

Jesus made a great diagram. It is sooo simple to build that making 2 of them should not be a problem. one like the one jesus just drew, and one like MK1 which he drew a while back.

cheesy smile coming up. Maybe stephan lost it somewhere and needs a copy.

jeanna

[innovation_station]

naw i burnt it out     lol   

ist!

i have bout 50 toroides all diffrent what is the best for freqs    the rings .....i saw the colour chart ...    most of my bigger ones are black.... i have many yello and some green ones   

mk1  what is the exact size and colour you used i may have 1 identical ...

[jeanna]

@Jeanna

Yes , i did have trouble replication the 67 volts on each side, But this is because the toroid is bigger and its optimal working freq is lower,
I managed 45 volt on each side (24turns each 16 gauge) , by tuning the transistor freq the resistor is about 50 ohms , My last project is the same under powered toroid but with 30 gauge and made as many turns as i could , one side is complete the other is not , I have to count the turns, there is more then 100 turns , I don't know how many. I may have to start over , since i forgot to count them in the first place. More detail
asap.

Mark

Edit ; the reason i got lower voltage may be wire gauge resistance factor, but the bigger toroid has less output but more space for turns.

Don't you hate when you forget to count?

I think this is the next important step. If there is really a benefit from staying away from a big toroid, and the thin wire is better than thick, we may find some scaling problems. I personally like the idea of having smaller modules...

Please post the results of the partial along with the full one when you are finished undoing the partial. All the evidence gets added together, even if we must unwind some of it!

Thanks MK1, your work is really great.

jeanna

LOL ist! you burnt it out! 

catch it. it is back a few posts!

jeanna

[Mk1]

@all

My project is to light my neon from a 1 cent and aluminium foil in electrolyte .Nuts you say.HA HA HA !

Edit : Ok it may need 3 or 4 cents.