Week 8 Wednesday -- MAE 412

Lecture:

• Sense / Actuate / Sequence
• Review of project types -- collision avoidance (w/ signals and crossing gates), CLBC (coal, log, ball, container) loader/dumper, turntable / transfer table, coupler / decoupler / car swapper, rotary coal dumper and sorting yard, track reversers: loop, wye, point to point, overhead crane - robot arm, multi-point track switch / router, bascule (lift) bridge, car bar-code reader / router, mail pickup and drop-off, electric bus (rail and catenary), cable railway, trolley line, games and miscellaneous (Tower of Hanoi, Neural Net Sorter), RR passenger station with train information board -- plenty of room for new ideas -- RR history -- RR related industry



• Transistor basics -- NPN, PNP, I_C vs. V_CE , Current Regulation, Use as ON/OFF Switch
• TTL control of low power motor, TTL control of high power motor, Darlington Pair - demo
• SCR (Silicon Control Rectifier - also known as Silicon Control Switch) - demo
• Power MOSFET (N channel device similar to NPN), I _D vs V_DS , Use as ON/OFF Switch
• Sensors (magnetic proximity, optical proximity, optical interupter, mechanical)
• Actuators (dc gearmotor, solenoid, servo motor, electromagnet, mechanical)

Read Chapter 2 of Volume 1 of the On-line Text ("Hornby Railways ...")

Document your working computer using ORCAD (see example on CIRCUITS page)

Read chapter 3 of CST -- available on-line (go to BLACKBOARD => LIBRARY => e-reserves => authentication page => user:mae412 password:littman1).  Continue studying the 6502 instruction set.