Joule Thief

[jeanna]

MMM
Thanks NOP for your explanation. I think I understand the implications. If it can absorb more current before it saturates, and it is the saturation that makes the make and break, then I am using/wasting amps just in absorbing to the limit of the higher permeability.
In normal electronics circuits, I think the higher permeability might be an advantage, but maybe here, it is not.

-----

So, I tried a little thing and got a change of results.

I took out about half of the secondary winds of the coil I made yesterday with the high permeability (...I need to keep giving them names! ). I made them go back in the other direction and turned once again. these are uneven amounts and so only a preliminary look at this, but the lights were very much brighter.

The rectified voltage went from 1.09 v rectified to 1.215 v Rectified. So, still low, but higher and the lights are much brighter. The amps were higher too. I forgot to note them, but I turned the v resistor to get the lights to about the same brightness and the amps draw went down to 4.1mA
'corse there are 4 lights running off this - and there could be more so 4.1 mamps / 4 = 1mA draw per light and the rectified voltage was higher too. This is a small change but all in the right driection from yesterdays big hope.

More later, but likely not til tomorrow. I am going to seed savers tonight. wow it has been a month already! 200 pages I think! 

So, to recap, I believe it is true that having the secondary/pickup coil go in at least 2 directions is crucial for good results.

thank you,

jeanna

[gadgetmall]

@pirate Look for at least 10k to 20 k pots i use pcboard mount type

@Mk1 . I guess you didn't run malwarebytes  Anti-Malware . I have been in the computer Business for 30 years i can tell you this will fix your problem if its related to Trojans Virus bad programs etc . . First thing is CLEAR YOUR CACHE . run AntiMalware reboot run it again  Clear cache  and all temp files including cookies   and yea uncheck 3 party browser extentions . they suck as Ie does .

[Pirate88179]

@ Gadgetmall:

Thank you!  the pc board pots can be used on a breadboard right?  Radio Shack seems to have a lot of those, just not the panel mount types like i have been used to.  Thank you.

Bill

[innovation_station]

a relay i was really hopeing there was another way what about a mosfet??  as a switch

i have only a few irf 840's left should work tho .... no?

i might be able to just swap out the 4401  for the irf 840

http://www.youtube.com/watch?v=fPQ8IXqAoTc


what ya think?

ist!

[Pirate88179]

@ Gadgetmall:

I have a question for you on your modified Fuji circuit.  When you run the cfls until the battery is "dead" at your very low mA draw, have you tested the "dead" batteries to see what, if anything is left in them?  What I am wondering is this:  Will your Fuji take the batteries down below the threshold voltage of the transistor?  Or, if you then took those same "dead" batteries and put them into another JT toroid circuit, will they still do anything at all?  My guess is (and it, of course, is just a guess) that your Fuji will take the bats down as low as the toroid version of the JT.  I was just thinking a minute ago and was very curious.  Thanks.

Bill