Basic Electricity and Electronics Module One Basic Electricity Copyright © Texas Education Agency, 2012. All rights reserved.
Basic Electricity and Electronics Module One Basic Electricity Copyright © Texas Education Agency, 2012. All rights reserved.
Dec 29, 2015
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Basic Electricity and Electronics
Module OneBasic Electricity
Copyright © Texas Education Agency, 2012. All rights reserved.
Basic Electricity
Basic electricity and electronics starts with electrons
Electrons are one of the three fundamental particles
Electrons move to create electrical work Electronics is the study and use of
systems that control the movement of electrons
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Electrons and Charge
How do we make electrons move? Electrons have a charge Like charges repel, unlike charges
attract These forces make electrons move
F
F
F
+ +
+
---
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Where do we get charge? Charge is a fundamental property of
nature Electrons and protons have a charge Electron charge is negative Proton charge is positive
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The Atom
The fundamental building block of all matter
Made of protons, neutrons,and electrons
The type of element is determined by the number of protons in the nucleus
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Voltage and Charge Voltage is a measurement of force
created by a buildup of charge Atoms are usually neutral because
they have the same number of protons and electrons
Charge builds up when electrons are separated from the atom
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Voltage and Current
Voltage is the force created by a buildup of charge
Also called a potential difference Voltage can make electrons move Electron movement is called current
flow Current flow does the work in an
electric circuit
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Common Electrical Units
The unit of charge is the COULOMB
Charge has the symbol Q, abbreviation C
The unit of voltage is the VOLT The symbol is V, the abbreviation is V
The unit of current is the AMP Current uses the symbol I, abbreviation A
The unit of resistance is the OHM
Resistance has the symbol W, abbreviation R
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Why use Electricity?
A good power source Easy to create Easy to control Efficient to transmit Easy to measure Makes everything work – our way of
life depends on it
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An electric circuit must have a complete path from one side of a power supply (+V) to the other (-V)
Voltage across a resistor creates current
Voltage, current, and resistance follow a rule known as Ohm’s Law
I =
Current equals voltage divided by resistance
VR
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A Simple Circuit
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Water vs Electrical Analogy
Calculating series and parallel resistance
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Electricity creates an electromagnetic wave also known as a radio signal
Travels at the speed of light through air
Travels at nearly the speed of light through a wire
Historically most signals were analog and used AC principles
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Electrical Components
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Electrical Components
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Electrical Components
Resistors
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Water Analogy
Capacitors in AC circuits
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Water Analogy
Capacitor Tutorial Video
Capacitor AC & DC Current
Inductors in AC circuits
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Water Analogy
Inductor Tutorial Video
Symbol
Diodes
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Water Analogy
Diode Tutorial Video
LED
Transistors
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Water Analogy
Transistor Tutorial Video
Symbol
Microprocessors
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MicroprocessorTutorial Video
iPhone 6 Microprosessor
How MicroprocessorsAre Made Video
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