Joule Thief

[electricme]

Hi Erfandl
Great looking JT, well done, try and let it keep going until the battery gives out which should be a long long time if they are fully charged.
One day I will get back into this thread again.


Keep up the good work.


Regards to all the old JT mates from a decade ago. electricme

[crowclaw]

Hi, same here, I'm still around

[erfandl]

Hi Erfandl
Great looking JT, well done, try and let it keep going until the battery gives out which should be a long long time if they are fully charged.
One day I will get back into this thread again.


Keep up the good work.


Regards to all the old JT mates from a decade ago. electricme

Hi electricme, crowclaw .sorry for late.
I removed the LED from the circuit and the results were slightly different:
I connected to the circuit a battery that had rested for 10 days and its voltage was 1.452. After 5 hours, the battery voltage increased to 1.458. But the voltage did not exceed 1.458 even after 1 day and was fixed at the same voltage. the coil still ringing 

[crowclaw]

Thanks for keeping us posted, good work. Crow Claw

[norman6538]

So does this mean the LED has been lit for a week and the Batt V has not gone down?
If so quite impressive.

How many free watts would that be?
I'm wondering what the antenna does in this circuit. I think that is new from my memory.
With the antenna this circuit is looking more like the Morray/Bruce Perreault work.

Which diode is the LED? 



Thanks

Norman