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Saturday, July 21, 2012

Running a 12V PC fan using a single AA battery (0.8-1.5V)

THe circuit is for learning purpose only and is far from being
 a practical DC converter... look at the input and output measurements..
very very not efficient :-)
* Replace the 1N4007 diode with a Schottky diode !
Vin = 0.8 - 1.5V, Vout = 65V (no load) /
Load : 12V / 0.15A PC Fan (Vload ≈3.6V, Iout ≈ 20mA)

After adding 2 Zener diodes (5.1V and 15V) and a toggle switch and putting it all 
in a nice tiny little box, here is the End-Product ;-)

Important notice: experimental circuit only!