E-mail: A OLD MOTORS Web site: http://www.pbase.com/oldmot/motorcycles Sale of motorcycles (Military) with sidecar M72, MB750, DNEPR, Ural, IZ 49, DKW, BMW R35, NSU, Zundapp, Parts and other stuff. Sending motorcycles and parts to different countries for over 4 years. They warrant...
Those are two negative feedback loops, or correcting loops, one controlling the inflow, one controlling the outflow, either or both of which you can use to bring the water level to your goal. Notice that the goal and the feedback connections are not visible in the syste...