Darin Jordan
05-18-2009, 11:08 AM
Just thought I'd share my Son's 3rd Grade Science project that we worked on this weekend... Potato Power, with a twist!
Each of these copper tubes was pressed through a russet potato, then a Galvanized (Zinc) nail was pressed down the center. Each "cell" puts out .940V and 1.40mA... Wired in a series 5 cells, the total voltage measures 4.60V, and has been powering the little green LED for over 15-hours at this point...
Was hoping to power a small CPU fan (5V, 0.09A), but not enough current at this point...
I'll be petitioning for a NAMBA rule change for the additional chemistry shortly! :D
Each of these copper tubes was pressed through a russet potato, then a Galvanized (Zinc) nail was pressed down the center. Each "cell" puts out .940V and 1.40mA... Wired in a series 5 cells, the total voltage measures 4.60V, and has been powering the little green LED for over 15-hours at this point...
Was hoping to power a small CPU fan (5V, 0.09A), but not enough current at this point...
I'll be petitioning for a NAMBA rule change for the additional chemistry shortly! :D