Electricity and Circuits - Department of Computer Sciencephi/csf/slides/lecture-electricity.pdf · 2018-02-02 · Electricity 6 Electrons are stored in battery Electric field pulls

Electricity and Circuits

Philipp Koehn

2 February 2018

Philipp Koehn Computer Systems Fundamentals: Electricity and Circuits 2 February 2018

1Still Magic?


2

water


3Flow of Water

• Water is stored in bucket

• Gravity pulls water through pipe

• Core concepts

– water pressure– size of the pipe– amount of water flow per time unit


4More Pressure

• Bucket filled twice as much

• Double water pressure

⇒ Double water flow


5Bigger Pipe

• Pipe twice as big

• Twice as much water in pipe

⇒ Double water flow


6Electricity

• Electrons are stored in battery

• Electric field pulls electronsthrough wire

• Core concepts

– voltage = electron pressure– ampere = size of the pipe– watt = amount of electrons flowper time unit

– watt hour = amount of electrons

• 1 kWh costs about 10 cents


7

generating electricity


8Water Power


9Wind Power


10Steam Power


11Electric Generator


12Right Hand Rule


13Creating a Magnetic Field


14

circuits


15Light Bulb


16Light Bulb with Switch


17AND


18OR


19Electromagnet


20Relay


21Normally Closed Relay: NOT


22

gates


23Light Bulb with Switch


24Relay


25AND Gate

Symbol:


26OR Gate

Symbol:


27NOT Gate

Symbol:


Documents

Electricity and Circuits - Department of Computer Sciencephi/csf/slides/lecture-electricity.pdf · 2018-02-02 · Electricity 6 Electrons are stored in battery Electric field pulls