FSR detects physical pressure, squeezing and weight using Active Element dots. Sensors are low cost and easy to use but rarely accurate. Resistance changes from infinite to 100KΩ to 200Ω with pressure. Force range is 0 to 20 lb (100 Newtons) applied evenly
Constantan is a copper-nickel alloy containing 55% copper and 45% nickel. Edward Weston discovered negative temperature coefficient in 1887. Named "Konstantan" in Germany after its discovery
Contact resistance is resistance to current flow due to incomplete surface contact. Values typically range from microohm to milliohm. Can cause significant voltage drops and heating in high current circuits. May vary with temperature and time through resistance creep
Ohmmeter measures electrical resistance using Ohm's law. Should not be connected to circuits with current or power sources. Can be connected in series or parallel based on measurement requirements
Resistance measures difficulty electrons flow through objects. Resistance is measured in ohms (1 ohm = 1 volt/1 amp). Components can range from ohms to megaohms
Multisim is available in ECE labs with Elvis drivers. Virtual components are useful for teaching and simulation. Ground is mandatory for all simulated voltages. Components can be placed using component toolbars