Joule Thief

[electricme]

@ Ist @ Jesus @ Mk1

All of you have done well, I like the neetly wound coil, noted the loops for tap points on your torid Ist, nice.
Jesus nice work with the circuits, I am toying around in my head about using a + 0 - battery setup to drive a special torid, havent given this much thought yet, using PNP and NPN transisters (BD139 and a BD140). Just a thought mind you, and use the output to drive power transisters with a direct hookup to the batteries themselves.


Yesterday I found a 12v solonoid which I think I can use as a coil make and break, harness some BEMF. I think I need to make the coil much bigger than it is to get as much energy from the aeather.

General Jim

[electricme]

@ Bill,

(towers of manhatten) lol
Here is a setup I would love to get stuck into, but have put aside for the moment (the big one with 4 terminal posts on top at least).

Look way down between the two big batteries, 1.2volt NiCad cells, there is a AA 1.2volt NiMH batt I use to charge up the others, it is dwarfed big time, ha ha.

Getting back to my current setup, using a AA 1.2volt cell to charge 2 X 1.2v Nicad cells.
The AA bat seems to be lasting much longer now, I went to bed and it was 1.25volts, woke this morning and it was 1.10volts, so thats really good, but I will need to tune this to get it to run without recharging from the wall supply.

It is a bit of a ballencing act, too much one way, and it not enough to keep the process going, Too much the other way and it will not have enough to recharge the 2 batts and have enough to keep the AA bat recharged. A bit of a tightrope to walk.

General Jim

[innovation_station]

mk1  im only getting 30 v intresting tho ... i used 4 diodes on 1 secondary i can mesure diffrent voltages many ways ......... hummmm

intresting



they range from .8v 6 v 3  and 30 v  i find this weird ...   any how im playing with it i will solder it to a board eventually ...
it is on 1 of my bread boards

jim

your gonna love the unit i have it is from an old car.........  guess what it has 3  coils     all in 1 unit ...  some one told me it was a regulator ..

might dig it up and take a pic for you

guys im not sure this ring thing is my cup of tea... 

i wound a feroite transformer core as a split jt ... i may walk that path...  dont know yet .... i was thinking of putting a layered secondary in the middle leg .... 

what ya think


also i wound up that flyback core ... i think it turned out well only used 2 coils for now  have not ran it yet ....


now if i can find those CELL FONE LITHIEUM BATTERIES ...  AND CAN CHARGE EM QUICK   might have a good little power source ..

ist

[Mk1]

@ist

Try a pot instead of the 1 k resistor, and find the right spot. Also if you keep the led on the jt 30 volt is about all you will get.

Do it right , you are so close.

[innovation_station]

i have a pot on it lol

and that is without the led.....   at the best spot...   


ist