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Navy Electricity and Electronics Training Series (NEETS)
Module 4—Introduction to Electrical Conductors, Wiring Techniques,
and Schematic Reading
Chapter 3:  Pages 3-21 through 3-24


 
 

Pictorial Diagram - RF Cafe


 
Isometric Diagram—Shows the outline of a ship, airplane, or piece of equipment. This diagram shows the components and the cable runs between the components. This diagram is used to locate components in a system.
 

Isometric Diagram - RF Cafe


 

3-21




Block Diagram—Shows the components in block form. Block diagrams are used in conjunction with text material. They are used to present a general description of a system and its functions.
 

Block Diagram - RF Cafe


 
Single-Line Diagram—Used for essentially the same purpose as the block diagram-to show the basic functions of a circuit.
 

Single-Line Diagram - RF Cafe


 
Schematic Diagram—Shows, through graphic symbols, the electrical connections and functions of a specific circuit arrangement. It is used to trace the circuit without regard to the physical size, shape, or location of the component devices or parts. A schematic diagram shows the overall operation of a system. It is used during troubleshooting to identify possible circuit malfunction locations.
 
Wiring Diagram—Is a detailed diagram of each circuit installation showing all wiring, connectors, terminal boards, and the electrical or electronic components of the circuit. It also identifies the wire-by- wire numbers or color coding. This diagram must be used in conjunction with a schematic diagram to troubleshoot a system in order to find the test point for voltage and resistance checks.
 
Terminal Diagram—Is used in connecting wiring to terminal boards, relays, switches, and other
components of a circuit.
 
 

3-22



 

Terminal Diagram - RF Cafe


 
Safety—All individuals are responsible for understanding and complying with safety standards and regulations established to prevent injury to themselves and others and damage to property and equipment.
 
Having safe working habits and adhering to safety precautions protects YOU and YOUR SHIPMATES. Follow safety precautions to the letter. DO NOT TAKE CHANCES. Carelessness could cost you your life.
 

ANSWERS TO QUESTIONS Q1. THROUGH Q18.


 
A1.     To provide the technician with a means to trace the wires when troubleshooting and repairing electrical and electronic systems.
 
A2.     In the technical manual for the equipment.
 
A3.     Individual cable in a specific circuit.
 
A4.     Wire segment letter.
 
A5.     The conductor connections both "to" and "from."
 
A6.     To prevent electrical shock to the operator in case there is an electrical short to the frame of the appliance or too.
 
A7.     A pictorial diagram.
 
A8.     An isometric diagram.
 
A9.     Block or single-line diagram.
 
A10.   A schematic diagram.
 
A11.   Between point (3) and the gas gauge tank unit ground.
 
 

 3-23




A12.    Only the brake lights.
 
A13.    Wiring diagram.
 
A14.    To find the test points.
 
A15.    Terminal diagram.
 
A16.    Adequate ventilation.
 
A17.    Approved meters or other indicating devices.
 
A18.    By use of a cleaning cloth.  
 
 

3-24



Introduction to Matter, Energy, and Direct Current, Introduction to Alternating Current and Transformers, Introduction to Circuit Protection, Control, and Measurement, Introduction to Electrical Conductors, Wiring Techniques, and Schematic Reading, Introduction to Generators and Motors, Introduction to Electronic Emission, Tubes, and Power Supplies, Introduction to Solid-State Devices and Power Supplies, Introduction to Amplifiers, Introduction to Wave-Generation and Wave-Shaping Circuits, Introduction to Wave Propagation, Transmission Lines, and Antennas, Microwave Principles, Modulation Principles, Introduction to Number Systems and Logic Circuits, Introduction to Microelectronics, Principles of Synchros, Servos, and Gyros, Introduction to Test Equipment, Radio-Frequency Communications Principles, Radar Principles, The Technician's Handbook, Master Glossary, Test Methods and Practices, Introduction to Digital Computers, Magnetic Recording, Introduction to Fiber Optics

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