This document provides an introduction to electricity and electronics. It discusses electrical systems in vehicles and defines key terms like current, voltage, resistance, and conductors and insulators. Ohm's law relating voltage, current, and resistance is explained. Common electrical symbols like for batteries, fuses, switches, light bulbs and ground are shown. Both series and parallel circuits are illustrated.
2. 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
3. What is electricity? Electricity is the flow of electrons on the valance, outer, shell of an atom. http://www.flickr.com/photos/argonne/3853255001/
4. 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).
5. Conductors Conductors have one to three electrons in their valance band. Examples: Platinum Copper Silver Gold
6. Insulators Insulators have eight electrons in their valance band and do not conduct electricity well. Plastic Rubber Porcelain Wood You
7. Important Terms Current: The amount of electricity Measured in amps The water in the hose http://farm1.static.flickr.com/57/193508636_cd6176a58f.jpg
8. 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
12. 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
13. Example of Ohm’s Law Automotive Battery Voltage = 12v Resistance of light bulb = 2 ohms Amperage = x
14. Example of Ohm’s Law Amps = 7 Resistance =2 Voltage = unknown (x)
