On Mon, Jun 27, 2011 at 7:18 AM, Morris Odell <[email protected]>wrote:
> > I love this thread on the old style large synchronous motors. My first > engineering job was in a paper mill where they had quite a few of them on > various machines including the Ward Leonard sets that controlled the paper > machines. We were continually tweaking the excitation to try and get the > overall power factor down... > > Morris > That sure brought back memories. I grew up in a little town with a large paper mill and I well remember, as a pre-teen, admiring the huge motors that powered the Fourdrinier machines and listening as the tour guide explained that they were synchronous motors and kept the machines running at a constant speed. Also exciting and mysterious were the enormous Jordan machines that reduced the size of pulp fibers. Giant, rapidly-spinning cones (driven by really big DC motors) that made a sound like all the flying saucers on Mars landing at once. > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
