Chapter 1 Circuit Measurement

• Circuit Measurement
• Introduction To Circuit Measurement
• In-Circuit Meters
• Figure 1-2.Compass And Conductor With Direct Current
• Permanent-Magnet Moving-Coil Movement
• Figure 1-5.A Movable Coil In A Magnetic Field (Current)
• Figure 1-7.Coil And Hairsprings
• Figure 1-9.Assembled Meter Movement.
• Compass And Alternating Current
• Rectifier For Ac Measurement
• Damping
• Electrodynamic Meter Movement
• Moving-Vane Meter Movements
• Hot-Wire And Thermocouple Meter Movements
• Ammeters
• Ammeter Connected In Series
• Effect On Circuit Being Measured
• Ammeter Ranges
• Ammeter Ranges-Cont.
• Figure 1-22.An Ammeter With Internal Shunt Resistors
• Figure 1-23.An Ammeter Employing The D'arsonval Principle And External Shunts
• Range Selection
• Ammeter Safety Precautions
• Loading Effect
• Figure 1-26.The Loading Effect.
• Making A Voltmeter From A Current Sensitive Meter Movement
• Ranges
• Figure 1-28.A Voltmeter And A Range Resistor
• Figure 1-29.A Voltmeter With Internal Range Resistors
• Electrostatic Meter Movement
• Voltmeter Safety Precautions
• Using The Ohmmeter
• Ohmmeter Ranges
• Figure 1-33.An Ohmmeter With Multiplication Jacks
• Shunt Ohmmeter
• Ohmmeter Safety Precautions
• Megohmmeter
• Megger Safety Precautions
• Multimeter
• Multimeter Controls
• Figure 1-38.A Multimeter Scale And Reading
• Parallax Error
• Figure 1-39.A Multimeter Scale With Mirror
• Figure 1-41.A Parallax Error In A Meter Reading
• Multimeter Safety Precautions
• Hook-On Type Voltammeter
• Wattmeter
• Watt-Hour Meter
• Frequency Meters
• Figure 1-47.Simplified Disc Of A Vibrating-Reed Frequency Meter. Indicator Dial
• Moving-Disk Frequency Meter
• Figure 1-49.Meter Recognition
• Figure 1-50.Multimeter Reading Practice.
• Figure 1-51.Meter Reading Practice
• Circuit Measurement
• Assembled Arrangement
• Damping
• The Hot-Wire Movement
• Ammeter
• Voltmeters
• Ohmmeters
• Megohmmeter (Megger)
• Multimeter
• Hook-On Type Voltameter
• Wattmeter
• Watt-Hour Meter
• Frequency Meters-Cont.
• Answers To Questions Q1. Through Q70
• Answers To Questions Q1. Through Q70
• Answers To Questions Q1. Through Q70
• Answers To Questions Q1. Through Q70
• Answers To Questions Q1. Through Q70

Chapter 2 Circuit Protection Devices

• Circuit Conditions Requiring Protection Devices
• Circuit Protection Devices
• Fuses
• Circuit Breakers
• Plug-Type Fuse
• Figure 2-5.Cartridge-Tube Fuse.
• Time Delay Rating
• Standard
• Identification Of Fuses
• New Military Designation
• Old Commercial Designation
• New Commercial Designation
• Clip-Type Fuseholder
• Checking And Replacement Of Fuses
• Checking Fuses With A Meter
• Replacement Of Fuses
• Proper Fit Of Replacement Fuses
• Preventive Maintenance Of Fuses
• Circuit Breakers
• Figure 2-16.Circuit Breaker Components
• Terminal Connectors
• Thermal Trip Element
• Thermal-Magnetic Trip Element
• Trip-Free/Nontrip-Free Circuit Breakers
• Time Delay Ratings
• Figure 2-23.Circuit Breaker With An Operating Handle
• Circuit Breaker Maintenance
• Circuit Protection Devices
• Plug-Type Fuses
• Fast Fuses
• New Military Fuse Designation
• The Old Commercial Fuse Designation
• Fuseholders
• Open Fuses
• Proper Fit
• A Thermal Trip Element
• Thermal-Magnetic Trip Element
• Working On Circuit Breakers
• Answers To Questions Q1. Through Q43
• Answers To Questions Q1. Through Q43
• Answers To Questions Q1. Through Q43

Chapter 3 Circuit Control Devices

• Introduction
• Types Of Circuit Control Devices
• Switch Types
• Multicontact Switches
• Figure 3-3.Multicontact Switches
• Single-Break And Double-Break Switches
• Rotary Switches
• Figure 3-7.Rotary Switch In Automobile Ignition System
• Figure 3-9.Wafer Switch
• Other Types Of Switches
• Momentary And Locked Position Switches
• Snap-Acting Switches
• Figure 3-14.Common Actuators And Their Uses For Accurate Snap-Acting Switches
• Maintenance And Replacement Of Switches
• Figure 3-15.Table Of Correct Readings
• Replacement Of Switches
• Preventive Maintenance Of Switches
• Solenoids
• Figure 3-17.Solenoid Action
• Maintenance Of Solenoids
• Relays
• Figure 3-19.Relay Construction
• Figure 3-21.Relay Contact Arrangement
• Figure 3-23.A Thermal Time-Delay Relay
• Figure 3-24.Relay Enclosures
• Maintenance Of Relays
• Figure 3-26.Burnishing Tool.
• Circuit Control Devices
• Poles
• Number Of Positions
• Momentary Position
• Current Rating
• Solenoid
• Clapper Relays
• Burnishing Tool
• Point Bender
• Answers To Questions Q1. Through Q30
• Answers To Questions Q1. Through Q30

Appendix I Glossary

• Appendix I Glossary
• Appendix I Glossary

Appendix Ii Laws Of Exponents

• Appendix Ii Laws Of Exponents

Appendix Iii Schematic Symbols

• Appendix Iii Schematic Symbols
• Appendix Iii Schematic Symbols
• Appendix Iii Schematic Symbols
• Appendix Iii Schematic Symbols
• Appendix Iii Schematic Symbols
• Appendix Iii Schematic Symbols
• Appendix Iii Schematic Symbols
• Appendix Iii Schematic Symbols
• Appendix Iii Schematic Symbols

Appendix Iv Cross Reference Of Military And Commercial Fuse Designations

• Module 3  Index
• Module 3  Index

Assignment Questions

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