Joule Thief

[gadgetmall]

@all
i edited My schemitic Again so it is now correct with a PNP transistor . Sheesss ! I just canot get used to drawing circuits and i need to take my time .
@ Jeanna
   My circuit is now correct . I will try tomorrow and see if i can actually wind a secondary around My coil and see what it does to the input current but i think what will happen is it will detune and current will probably got up again . we will see..

[innovation_station]

i have noticed similar things with the jt   why ?

well i bet the cap is not matched for the jt as well the jt is a verry short wire ... hence low selfinductance ...  so   why is it called HEMF..... 

and what causes HEMF  a ballanced winding .... like my mot unit ..... hi and low ...    what we are playing  with currently

in  the jt could be considered inductive discharge ..  or flyback ...  only part of it ...  we need high selfinductance windings ...  too                   
to devolop a big kick with the ability to charge the cap ...   ..   on the input side FULL WITH EVERY PULSE..

so then you only PAY FOR THE FIRST CHARGE.... OF THE CAP    cuz what is returned is always MORE   and if you get it right it will fill the cap everytime ...   hence input drops off....  it then self sustaines ... 

but now you  need a bigg enough colapse to power your secondaries as well as charge the cap .......


leaveing it there 

ist!

unless ofcourse .... all is in tune ballance and you got some rytmithic interchange going on ..... lol

so that brings up resosnance ...   lol

well lets ask why is there even resosnance ...    cuz your pushing and so is she 

what push and push that dont seam right ..... must be 2 hidden pulls .... too     

humm sine ...   


has anyone tryed garden wire as the resestor  and the second wind....  well im a do it ... 


right now ....   1 garden wire and 1 copper wire jt  see where this goes

[gadgetmall]

@ pirate
A variable resistor is a pot . for instance a 20k pot is 20 k across and we use the wiper to varie the resistance from 20k to 0 . right ?. I have been in the tv radio business for a long time and a ham operator for 20 years and i can't say that i ever saw a two legged variable resistor unless its a thermistor .

[Light]

“Thanks for posting them It looks like you have been doing a lot of experimenting.
- Yes, to make sure there’s nothing goes beyond school physics…

"Can you post how you hooked the JT's up for one to power the other?
- Just make two (or 3 or 5) and connect each following instead of LEDs.

Nothing happens here till we get amperage...

[innovation_station]

funny thing ....

i wound up my next unit copper and garden wire jt and hooked it up b4 any parts and i took resistance readings .... and my coper wind reads .6 ohm and my steel wire ... dubble it exactly .... 1.2 ohm ...  just thought i would mention it ...

ist!


ill post a pic later when i get it working properly

well finished it off too and well by the look of the leds it also works ..  a magnet do not effect this unit as i thought it would agin i only used the leds to check the out put of it ...

i did not notice any squeel this time ....  hummmm