How to expand output pin of 13 [SOLVED]

[Diztly Wardizt]

Halo Fernando,

Thank you for answering all my previous questions. This time i will ask about the output from PWM 13 which is only 40ma.
I need a 6 pcs FAN with PWM function, not just On and OF.
Hopefully this picture can explain my point.
Is it necessary to use a transistor like this, or with other components?






best Regards

[Fernando Garcia]

Hi!

You should reply before mark the topic as solved.

This circuit should work but I think you should measure the current needed using a multimeter in serie with PWM wire.

Maybe this transistor won't be needed.

BTW yellow wire is tachometer and it is not used. Normally the PWM wire is blue and is available in 4 wire fan.

Best regards.