1. 1 ENGG1015 Tutorial Pro-Project Laboratory and Project 15 Oct (Supplementary notes, may be obsolete, NOT for examination) Learning Objectives  Identify components that can be used in the pre-project labs and project (i.e. Build a Rube Goldberg Machine)  Identify electrical safety rules, electrical units, electrical symbols rules

2. Electrical Safety 5-10 ma can cause death Skin resistance can range from 1kΩ for wet skin to 500kΩ for dry skin. Death can result from as low as 50 volts Body can sense 9 volts under the right conditions Report TA or technician for any emergency case

3. Electrical Units Voltage (V): volts (μv → kv) Current (I): amperes (amps), milliampere (ma 10 -3 ) Resistance (R): ohms Ω, k-ohms (k 10 3 ), meg ohms (m 10 6 ) Capacitance (C): farad, microfarad (µf 10 -6 ), nanofarad (nf 10 -9 ), picofarad (pf 10 -12 ) Inductance (H): henry, millihenry, microhenry Frequency (freq.): mhz, ghz 10 9

4. Electrical Symbols

5. Knowledge for the Pre-Project Lab From circuit diagram to implementation

6. Knowledge for the Pre-Project Lab From circuit diagram to implementation

7. Knowledge for the Pre-Project Lab Terminal Board Sensor / Switch Motor / Driver Wire to power supply Wire color scheme (red (DC), black (GND), yellow, blue, green) SS relay

8. Digital Multi-meter (DMM) Important debugging tool Voltage DC: 2mv-1000v Voltage AC: 2vac-750vac Current: 2ua-10A Resistance: 2-2m BJT: beta test Diode test