Last updated at 05:03 PM on 24 Feb 2013
Class meeting on 4, 5 February 2013
Learning Objectives
Be able to identify whether a process is batch, steady flow or unsteady flow.
Be able to write the mass balance equations for batch processes.
Be able to use a systematic procedure to solve batch mass balance problems.
Be able to identify the components in a cascade control circuit
Be able to describe the purpose of the flyback diode on a relay coil or solenoid valve.
Be able to attach the solenoid valves and supply tanks to the fish tank platform
Notes and Supplemental Files
Notes on analyzing mass balance for batch processes (PDF)
Slides on cascaded switching circuits PowerPoint or 3-up slides in PDF
Hand notes on relays (PDF)
Notes on clearance holes for solenoid screws
"How to" page on wiring the solenoid valves.
The following video shows three circuits for switching an LED. One circuit uses
a digital output pin to directly supply power to the LED. A second circuit uses
a transistor to switch the current to the LED. The third circuit uses
a transistor to switch a relay.
VIDEO