circuit for pwm fan control

[spirosd]

That won't work either! ... Check my PIC tutorial 'Hardware Extras' ...

It's time for me to put on the 'D' cap and go and study in the corner! Thank you for pointing out your tutorial page.

TIP120 and TIP125 suitable for the PNP/NPN transistors?

 

[Nigel Goodwin]

That won't work either! ... Check my PIC tutorial 'Hardware Extras' ...

It's time for me to put on the 'D' cap and go and study in the corner! Thank you for pointing out your tutorial page.

TIP120 and TIP125 suitable for the PNP/NPN transistors?

Those are high power darlingtons, you just need small signal transistors - personally I'd use BC107 for the NPN and BC177 for the PNP, but those are the ones I always use!.

 

[spirosd]

Those are high power darlingtons, you just need small signal transistors - personally I'd use BC107 for the NPN and BC177 for the PNP, but those are the ones I always use!.

Thank you Nigel.