Intro To Electricity And Electronics
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Transcript of Intro To Electricity And Electronics
Intro to Electricity and Electronics
The Shocking Truth!
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
What is electricity?
• Electricity is the flow of electrons on the valance, outer, shell of an atom.
http://www.flickr.com/photos/argonne/3853255001/
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).
Conductors
• Conductors have one to three electrons in their valance band.
Examples:• Platinum • Copper• Silver • Gold
Insulators
Insulators have eight electrons in their valance band and do not conduct electricity well.
• Plastic • Rubber• Porcelain • Wood• You
Important Terms
Current: • The amount of electricity• Measured in amps• The water in the hose
http://farm1.static.flickr.com/57/193508636_cd6176a58f.jpg
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
Important Terms
Resistance: • Opposition to current flow• Measured in Ohms• Your Thumb!
Meet George
• George Ohm• Born 1789• Published book in1827 on electricity • Loved to dance*
http://en.wikipedia.org/wiki/File:Denkmal_Ohm_TU_M%C3%BCnchen.jpg
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
Example of Ohm’s Law
• Automotive Battery Voltage = 12v • Resistance of light bulb = 2 ohms• Amperage = x
Example of Ohm’s Law
• Amps = 7• Resistance =2• Voltage = unknown (x)
Electrical Symbols
Battery
Basic Circuit
Electrical Symbols
Fuse
Basic Circuit
Electrical Symbols
Switch
Basic Circuit
Electrical Symbols
Light Bulb
Basic Circuit
Electrical Symbols
Ground (Earth)
Basic Circuit
Basic Circuit
Series Circuit
Series Circuit
Parallel Circuit
Parallel Circuit