Joule Thief

[kooler]

sorry
i had a messed up day .. yesterday.. after looking at your switch today it did look right.. i'm sure we all have off days..
i was thinking the two contacts in the switch were together yesterday..
sorry..
GL will this circuit with just capacitors or does it need batteries..

robbie

[totoalas]

http://www.youtube.com/watch?v=_vxLxo4JNks&feature=channel&list=UL


WITH DIFFERENT LOADS

[Groundloop]

GL,

This is nice, I knew the switching should be ok.
Thanks so much, this was my dream, to build one
included in a small box and just turn the switch to
get more power. I do really appreciate your work,
and willingness to help others.

best regards,
sarmasio

Sarmasio,

Thank you. :-)

I did try a L3 coil of 60 turns (just before I went to bed last night) but that was not enough turns. The LED did light dimly.
So I estimate that you will need some few hundred turns on the L3 coil. I will try that after work this evening.

GL.

[Groundloop]

sorry
i had a messed up day .. yesterday.. after looking at your switch today it did look right.. i'm sure we all have off days..
i was thinking the two contacts in the switch were together yesterday..
sorry..
GL will this circuit with just capacitors or does it need batteries..

robbie

Robbie,

No problemo. :-)

I do not think that this circuit can run very long on capacitors. The main idea was that you use the coil high voltage
spike to charge a second battery while using power from the first battery. Then when the first battery is drained,
you just flip the switch and get a little longer running time. But, it is fun to see the second battery charge. :-)

GL.

[callanan]

Hi All,

I am curious at the various levels of amazement that is shown by many at being able to light LEDs with very low power levels.

Please see the following circuit, which may amaze some of you. Transistor can be 2N2222 or any similar equivalent.


Regards,

Ossie