intro to electricity and electronics
DESCRIPTION
A PowerPoint designed to introduce students to electricity.TRANSCRIPT
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Intro to Electricity and Electronics
The Shocking Truth!
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Electrical Systems
• PCM• BCM• Exterior Lights• Interior lights• Power accessories• Heated seats• Radio/ System• Navigation systm.
• Starting• Charging• Backup Alert • GM - Onstar• Ford - Sync • Airbag systems
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What is electricity?
• Electricity is the flow of electrons on the valance, outer, shell of an atom.
http://www.flickr.com/photos/argonne/3853255001/
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Two Types of Electricity?
• Conventional Flow vs. Electron Flow• Conventional Theory: electricity flows from
positive to negative• Electron Theory: Electricity flows from negative
to positive• Blame it on Ben!• For our purpose: Electricity flows out of the
positive terminal of the battery into the negative (ground).
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Conductors
• Conductors have one to three electrons in their valance band.
Examples:• Platinum • Copper• Silver • Gold
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Insulators
Insulators have eight electrons in their valance band and do not conduct electricity well.
• Plastic • Rubber• Porcelain • Wood• You
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Important Terms
Current: • The amount of electricity• Measured in amps• The water in the hose
http://farm1.static.flickr.com/57/193508636_cd6176a58f.jpg
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Important Terms
Voltage• The force or electrical pressure • The Push
http://farm3.static.flickr.com/2457/3555980548_0d21baff62_b.jpg/bmi_orig_img/3555980548_0d21baff62_b.jpg
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Important Terms
Resistance: • Opposition to current flow• Measured in Ohms• Your Thumb!
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Meet George
• George Ohm• Born 1789• Published book in1827 on electricity • Loved to dance*
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http://en.wikipedia.org/wiki/File:Denkmal_Ohm_TU_M%C3%BCnchen.jpg
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Ohm’s Law
• Resistance = Voltage divided by Current• Ohms = Volts/Amps • Volts = Amps x Ohms • Amps = Volts/Ohms
http://en.wikipedia.org/wiki/File:Omega_uc_lc.svg
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Example of Ohm’s Law
• Automotive Battery Voltage = 12v • Resistance of light bulb = 2 ohms• Amperage = x
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Example of Ohm’s Law
• Amps = 7• Resistance =2• Voltage = unknown (x)
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Electrical Symbols
Battery
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Basic Circuit
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Electrical Symbols
Fuse
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Basic Circuit
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Electrical Symbols
Switch
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Basic Circuit
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Electrical Symbols
Light Bulb
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Basic Circuit
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Electrical Symbols
Ground (Earth)
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Basic Circuit
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Basic Circuit
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Series Circuit
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Series Circuit
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Parallel Circuit
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Parallel Circuit