Re: More people who use DACs...

Alan Baker wrote:
...but don't understand them as well as Edwin:

"When the fan is on, a 4-bit binary value is specified by the MCU with 4 port pins. This value is then converted to a 0-12V voltage by the DAC, with 16 discrete voltages in between."

But, what would *they* know? It's just Cornell University...

<http://instruct1.cit.cornell.edu/courses/ee476/FinalProjects/s2005/sg348
_ekl25/html/hardware.html>


So you think a DAC puts out discrete voltage levels? Only if you remove the circuitry that smooths its output into sine waves.

You ought to stop debating engineering topics Alan. They're obviously over your head.
.