What is your question?

Fansler, David wrote:

> Mitchell - the two things I know about a hexfet that makes them better than
> a transistor is 1)there are versions that only require 5 v to turn them on.
> This makes them a snap to connect directly to a PIC to handle large power
> loads of any (reasonable) voltage.  2) A hexfet (or any FET) has a very low
> resistance when "turned on".  I do not remember the exact figures, but I
> think a transistor may have an internal resistance in the range to 10's to
> 100's of ohms.  A hexfet may have a resistance on only 1ohm down to .006
> ohms.  The more resistance present, the more energy that is converted into
> heat that must be dissipated, plus it is wasted energy.
>
> So the bottom line is, hexfet's are easy to interface and energy efficient.
>
> David V. Fansler
> Network Administrator
> TripPath Imaging, Inc.  (formerly AutoCyte, Inc.)
> 336-222-9707 Ext. 261
> dfansler@autocyte.com
> Now Showing! www.mindspring.com\~dfansler\
> <http://www.mindspring.com\~dfansler\>
> Updated December 16, 1999
> Ann's Cancer & David's Observatory
>
>                 -----Original Message-----
>                 From:   Mitchell D. Miller [mailto:mdmiller2@HOME.COM]
>                 Sent:   Tuesday, December 28, 1999 4:23 PM
>                 To:     PICLIST@MITVMA.MIT.EDU
>                 Subject:        Re: stupid question about sink/source
>
>                 > "Use HexFets, not bipolar transistors"
>
>                 What's special about HexFets?
>
>                 Mitch Miller, Omaha, NE
>                 mdmiller2@home.com