ahmedragia21
Member
Hi, im trying to use a uC like 89S52 for energizing a fan using a TIP12 , i connected a base resistor Rb , and supplied the collector with 12 V and put a protection diode , i dont know if a value of 1k base resistor would saturate the transistor at 5V or no ?
Rb= 5- VBe(on) / iB
= 5-2.5 / 12mA = 0.2 kOhm
at VCE(sat) 2V, Ic = 3A, Ib=12ma
is this correct ?
Rb= 5- VBe(on) / iB
= 5-2.5 / 12mA = 0.2 kOhm
at VCE(sat) 2V, Ic = 3A, Ib=12ma
is this correct ?