Charging of a Capacitor RC time constant time

Charging of a Capacitor RC time constant – time it takes capacitor to charge or discharge by 63% - “electrical response time” http: //hyperphysics. phy-astr. gsu. edu AME 20216 - Rumbach 1

Memorize it: At t = τ… AME 20216 - Rumbach 2

Alternating Current (AC) www. learnabout-electronics. org |V| Vpp = 2|V| “peak amplitude” “peak-to-peak” “root-mean-square” AME 20216 - Rumbach 3

Memorize it: AME 20216 - Rumbach 4

Alternating Current AME 20216 - Rumbach 5

Phase Resistor R Capacitor Inductor AME 20216 - Rumbach C L http: //hyperphysics. phy-astr. gsu. edu 6

A 5 – Electronics II Amplitude AME 20216 - Rumbach Phase 7

High-Pass Filter AME 20216 - Rumbach 8

A 5 – Electronics II Amplitude AME 20216 - Rumbach Phase 9

Non-dimensional Parameters Reynolds Number AME 20216 - Rumbach 10

The AC Power Grid 60 Hz, 120 VRMS AME 20216 - Rumbach 11

The AC Power Grid Electrical energy distributed across nation via AC transmission lines. https: //www. technologyreview. com/s/401083/a-smarter-power-grid/ AME 20216 - Rumbach 12

Tesla Models S – 400 HP AC Induction Motor AME 20216 - Rumbach 13

55 Hz AC Induction Motor – 103 Amps at 300 V 300, 000 W = 400 HP Instantaneous torque! No transmission, no fuel pump, no water pump, no valves… Very few moving parts! AME 20216 - Rumbach 14

Energy Consumption Entropy Output Waste heat: 2 x 1012 W ~66% wasted Work Output Energy Input Economy 3 x 1012 W (3 TW) ~10, 000 W person! AME 20216 - Rumbach GDP and $$$ 1 x 1012 W ~34% used 15

A 6 and A 7 - Solar Panels 173 Million Giga. Watts of power are incident on planet earth! 10, 000 times more than total human consumption. AME 20216 - Rumbach 16

Solar “Microgrid” Solar energy is often stored in batteries for use at night. AME 20216 - Rumbach 17