ENGG 1015 Tutorial n n n ProProject Laboratory

ENGG 1015 Tutorial n n n Pro-Project Laboratory and Project 15 Oct (Supplementary notes, may be obsolete, NOT for examination) Learning Objectives q q 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 1

Electrical Safety n n n 5 -10 ma can cause death Skin resistance can range from 1 kΩ for wet skin to 500 kΩ 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

Electrical Units n n n Voltage (V): volts (μv → kv) Current (I): amperes (amps), milliampere (ma 10 -3) Resistance (R): ohms Ω, k-ohms (k 103), meg ohms (m 106) Capacitance (C): farad, microfarad (µf 10 -6), nanofarad (nf 10 -9), picofarad (pf 10 -12) Inductance (H): henry, millihenry, microhenry Frequency (freq. ): mhz, ghz 109

Electrical Symbols

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

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

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

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