52613 sfw356645eh5ah6j75
Member
hi there, I'm biulding a fan controler (from the mobo pwm to control non-pwm fans)
the thing is that the part that uses the 5v-0v input from the mobo's pwm to control the 12v-0V output with a pnp darlington (TIP105) but I've a problem with the voltage....
i get only get about 10.5-11.3V from the 12V, and that translates to 3.54A instead of 4.15A (aka less speed, and less air flow)
(12V, 5.4W X7)
is there any way to lower the voltage drop ?
**broken link removed**
(yes, it's a little ugly xD)
PS: I'm learning slectronic all by mayself, using from google, to electronics for dummies xD, so i may have missed some really basic consepts that you get from school![Stick Out Tongue :p :p](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
the thing is that the part that uses the 5v-0v input from the mobo's pwm to control the 12v-0V output with a pnp darlington (TIP105) but I've a problem with the voltage....
i get only get about 10.5-11.3V from the 12V, and that translates to 3.54A instead of 4.15A (aka less speed, and less air flow)
(12V, 5.4W X7)
is there any way to lower the voltage drop ?
**broken link removed**
(yes, it's a little ugly xD)
PS: I'm learning slectronic all by mayself, using from google, to electronics for dummies xD, so i may have missed some really basic consepts that you get from school