Joule Thief

[Pirate88179]

Here is one more shot.  I had to buy two of these 48" long tubes so I think I will try to light them both.  I really do find this unbelievable.... 40 watts!!!  Well, ok, it is not full brightness so probably not full 40 watts but it is a 40 watt tube.

Bill

[Mk1]

Great work! Pirate88179 , have you tried a earth ground?

[xee2]

 @ all

WARNING - I bought another camera at the same store from the same shelf and it is different than the previous one I bought. The transformer is marked T26 and the circuit board traces are physically different (but may be electrically the same). Transformer pins also seem to be different. On the package it says "82% reused or recycled". Therefore there is no guarantee that if you buy one it will work the same as in the posts here.

[maw2432]

@ Pirate

Bill,  Great work!   How long does it light with one AA battery?

Bill

[Pirate88179]

Great work! Pirate88179 , have you tried a earth ground?

Thanks.  Well, when I can, I am going to attempt to power this using only my earth battery using 2 grounded electrodes.  I can usually get almost 2 vdc out of it and somewhere around 30 mA's, give or take.  I don't know if that is enough or not, we will see.  It should at least run several LEDs on the smaller joule thief circuit.

What are you suggesting an earth ground might do with our Fuji board circuits?  I would have to modify the battery holder to attempt this.  Do you think this would increase light output?

Bill