Laptop Fan Help! Answered
so i bought a 2.8ghz laptop from a guy for $30
i fixed EVERYTHING, invested about $200 of my hard-earned money
and now the CPU fan wants to crap out on me >: (
the fan works, the circuitry that controls the fan has failed (on the mobo)
so what i am asking is that you help me!
i need to be able to regulate the 12v that comes from the battery into lower voltage, with a variable power supply,
I need someone to do the calculation so that i can regulate voltage form 4.5v - 12v
what would be the resistance values?
VOUT = 1.25 * ( 1 + ( R2/R1 ) )