Table of Contents 623 Electrical Circuit Diagnosis Objectives Course Map ........................................................................................... a Final Student Performances .................................................................. c 623 Electrical Circuit Diagnosis Course Menu ........................................................................................ 3 Section 1: Section 1 Topics ................................................................................... 5 Introduction ...........................................................................................
6 Attributes of Electricity .......................................................................... 7 Voltage ................................................................................................. 8 Current .................................................................................................. 9 Electrical Principles Effects of Current Flow .................................................................... 10 Resistance .......................................................................................... 11 Resistance Factors .........................................................................
12 Component Resistance .................................................................. 13 Loads .......................................................................................... 13 Ohm’s Law .......................................................................................... 14 Current vs. Resistance ................................................................... 15 Calculating Volts, Amps, or Ohms .................................................. 16 Examples .................................................................................... 16 Section 2: Measuring Section 2 Topics ..................................................................................
17 Meter Functions .................................................................................. 18 Digital Volt-Ohmmeter (DVOM) .......................................................... 18 Electricity DVOM Components ....................................................................... 19 Mode Selector ................................................................................ 20 Display ............................................................................................ 21 Unit Modifiers .................................................................................. 22 Over-Limit Reading .........................................................................
23 Auto Range Feature ....................................................................... 24 Manual Range ................................................................................. 25 Input Jacks ..................................................................................... 26 Measuring Voltage .............................................................................. 27 Source Voltage ............................................................................... 28 Available Voltage ............................................................................ 29 Open Circuit Voltage .......................................................................
30 Voltage Drop ................................................................................... 31 Converting Voltage Values ............................................................. 32 Measuring Current .............................................................................. 35 Maximum Current Capacity ............................................................ 35 Using a DVOM ................................................................................ 36 Converting Amperage Values ......................................................... 37 Electromagnetism ...........................................................................
38 Inductive Current Probes ................................................................ 39 Technical Training i