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    EEC 111 electrical drawing Lecture note pdf download
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    EEC 111 electrical drawing Lecture note pdf download

    KazeemBy KazeemApril 18, 2021No Comments3 Mins Read
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    EEC 111 electrical drawing Lecture note pdf download

    List of contents
    Week 1
    1. Introduction of Electronic Drawing
    1.1 Introduction
    1.2 Rules for drawing schematics
    1.3 Connections and crossovers
    1.4 Planning a schematic circuit diagrams
    Week 2 …………..……………………………………………………….. 6
    2. Computer Aided Drawing using Microsoft Visio
    2.1 Visio 2003 Basics
    2.2 Starting Visio Technical
    2.3 Page Setup Dialog Box
    2.4 Size and Position Window
    2.5 Saving a Drawing
    2.6 Formatting Toolbar
    2.7 Standard Tool bar
    2.8 The stencil
     Drawing No. 1
    Week 3 …………..……………………

    EEC 111 electrical drawing Lecture note pdf download

    Week 1
    1.0 Introduction
    Almost all projects, especially engineering projects, include mechanical, electrical,
    and Electronic components. Electronic components consist of items like power supply,
    energy conversion units, control circuitry …etc.
    Thus, knowledge of electronic systems is important for every drafter. Our purpose
    here is to show the rules for electronic drawing schematics.
    Drafters are responsible for preparing drawings that are easy to read. The drawing
    should completely describe the engineer’s design requirements. Drawing will allow the
    reader only one interpretation. Decisions cannot be left to the reader.
    The engineer’s sketches and layouts are called detail drawing and the drafter’s
    drawing is called the technical drawing.
    1.2 Rules for drawing schematics
    1. Normal signal flow should be from left to right and top to bottom.
    2. Lines should be spaced a minimum of 5 mm apart.
    3. Lettering should be 4 mm high.
    4. Lines between components should track the shortest path.
    5. Connecting lines should have a minimum of crossovers and joggles.
    6. Long parallel lines should be arranged in groups.
    7. Power sources should go up and ground lines down.
    8. All lines should run horizontally or vertically and connect in 90 corners.
    9. The symbols may be drawn to any size or default size (drawing by computer) but on
    the diagram similar symbols are drawn of the same size.
    10. Almost all symbols may be rotated or mirror-reversed without alteration of the
    meaning.
    11. Individual similar components in a circuit should be arranged either vertically or
    horizontally.
    1.3 Connections and crossovers
    Two systems are approved for showing connections (junctions) or crossovers. One is
    the dot system, as shown in Fig. (1.2a)(1.2b)(1.2c). The other is the no-dot system shown in
    Fig. (1.2d)(1.2e). The no-dot system of Fig. (1.2e) has some weaknesses in terms of clarity,
    but it has equality in the standards.
     
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