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Transcript
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 1 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 Electrical Units 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 AC source contact relay speaker lamp buzzer bell battery resistor ground DC source Knowledge for the Pre-Project Lab From circuit diagram to implementation Knowledge for the Pre-Project Lab 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) Important debugging tool Voltage DC: 2mv-1000v Voltage AC: 2vac-750vac Current: 2ua-10A Resistance: 2-2m BJT: beta test Diode test
