Automotive Electronic Diagnostics (Course-1) by Concepcion Mandy

Author:Concepcion, Mandy [Concepcion, Mandy]
Language: eng
Format: epub
Publisher: www.autodiagnosticsandpublishing.com
Published: 2011-05-23T16:00:00+00:00

Without a thorough understanding of "ohms law" you will not get very far in troubleshooting even the simplest of electronic or electrical circuits in the automotive world. Ohm established in the late 1820's that if a voltage was applied to a resistance then "current would flow and then power would be consumed" Some practical every day examples of this very basic rule are Electric Fry-pans, Toasters, Irons and electric light bulbs. The fry-pan consumes power producing heat for general cooking, the toaster consumes power producing heat for cooking toast, the iron consumes power producing heat for ironing our clothes and the electric light bulb consumes power producing heat and more important light for lighting up an area.

A further example is an electric hot water system. All are examples of ohms law at its most basic. You can always determine the other formulas with elementary algebra. Ohms law is the very foundation stone of electricity and electronics. So that E=IR and I=E/R and R=E/I. Knowing two quantities in ohms law will always reveal the third value. I suggest you print these formulas out and paste them to your toolbox to keep your ohms law as a handy reference until you are quite familiar with it. Ohm’s law has to become second nature to you, the electronic automotive tech. And by that we mean not doing the calculations, but understanding and using it to perform your diagnostics.

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