Joule Thief replications - not overunity

[gadgetmall]

guruji

I am not sure how much  voltage the Ucaps can take.......I am sure that the  max voltage  according the company is 2.7 V and not 3 V for a reason.

I am shooting for 2 to 2.5 V for mine
I like  a little safety margin.

I posted about my voltage control idea a few weeks ago........I was  promptly  told it  would not  work....... so I am not  going to talk  about it more until it is tested.
I  hope  to spend  most of this evening  building and testing it.



Other than the extra .3 V  I think the  zener diode  voltage control  ides would work .....at least with a small charger....... your zener has to be able to handle all the extra current.

Hi Gary . I am back . for a while . I have one of the 650f ultra caps charged by the 5 volt solar panel daily and by accident it's standing volts are 3.88 . It runs another circuit i build that gets its power from that bcap thru a blinking red LED . the other circuit is a jt-+ a sec to run one wire stuff . . Its running right now and really wont draw enough from the bcap so its OVER OVER Charging . but its not exploded yet :> I now feel safe with overcharging if that happens to 4 volts MAX on the 2.7 volt cap . Interestedly this cap is now one of my best ones . It might damage it in several years but they are now cheap enough to deal with it . there is a plug on the side of them that will leak out the electrolyte and pressure if it gets very high .

Albert

[resonanceman]

Hi Gary . I am back . for a while . I have one of the 650f ultra caps charged by the 5 volt solar panel daily and by accident it's standing volts are 3.88 . It runs another circuit i build that gets its power from that bcap thru a blinking red LED . the other circuit is a jt-+ a sec to run one wire stuff . . Its running right now and really wont draw enough from the bcap so its OVER OVER Charging . but its not exploded yet :> I now feel safe with overcharging if that happens to 4 volts MAX on the 2.7 volt cap . Interestedly this cap is now one of my best ones . It might damage it in several years but they are now cheap enough to deal with it . there is a plug on the side of them that will leak out the electrolyte and pressure if it gets very high .

Albert

Albert

I am glad you are back

I hope you can stick around a long time


Thanks for the information about the voltage boostcaps can handle
It makes sense  most engineers build in a substantial safty factor.

I  have not  worked on my voltage control circuit sense I last posted on this thread
I have lots of other stuff going on.
I will pick up where I left  off when I get a charging system I like  working

When I get back to using boost caps I will have alot more confidence  knowing that the  boost caps can handle at least a full volt over their rating
before I was only charging them to 2 volts  just in case I accidentally went over.

I do plan on trying to hold mostly to the rated voltage.
I have to assume the people that  chose the rated voltage knew something I don't know.


gary

[spinn_MP]

Correctly working tuned toroidal cores go OU.  As the basis of Orbo, bob boyce, tpu, kapandze and hundred other things but it not the oscillator design  in case you are wondering.

Oh, dear... Toroidal cores can go OU?

WTF?!...
Ah,Orbo technology....

[dasimpson]

the thing i love about this circuit is with very few scrap parts you can bring light to homes that have never seen a bulb let alone electricity and because we use so low voltage it isent to hard to make that power if this little units with an earth battery could be sent to 3rd world country they life would be made easyer

[dasimpson]

here is the second firing and filament loads in place on My no good for nothing Distraction JT I got 4 Peltier modules today and they do get HOT! on just 1 volt . Feels so good ~~
Gadget

so you are using the jt to charge the super cap then running the standerd bulbs off the supercap well thats bloody good in my eyes as thorse bulbs wont run off a normal jt ok the cost of parts may take awhile for them to pay for them selves but ant that the same with every product you build or buy and to cop what a load of bullshit rules and angles to eaerly say it isent