Oh, and on this point:
I already have a IRF510N MOSFET. Can I use that instead of a IRF540N?
Looking at DigiKey's parametric search, it seems at a glance that the primary difference between an IRF510 and an IRF540N is Source-Drain current limitations (the Instructables author incorrectly refers to the MOSFET's connections with BJT terminology). The 510 in a TO-220 case handles about 5 A, while the 540N in the same case handles 33 A. One would have to make measurements of the fan motor to determine the actual current it will draw, to decide whether the 510 is a suitable part. Inductive loads like motors tend to have large inrush currents, so you'd probably do well to err on the side of over-spec'ing the part, since it's being used to chop DC for PWM (meaning higher average current through the motor).
Cheers! -Brian _______________________________________________ Triangle, NC Embedded Computing mailing list To post message: [email protected] List info: http://mail.triembed.org/mailman/listinfo/triembed_triembed.org TriEmbed web site: http://TriEmbed.org To unsubscribe, click link and send a blank message: mailto:[email protected]?subject=unsubscribe
