Electronics Drafting Book

Chapter 1	Introduction to Electronics Drafting	7
	Job Responsibilities	7
	Engineer's Responsibilities	7
	CAD Drafter's Responsibilities	8
	Job Levels in Drafting	12
	Detail Drafter	13
	Assembly Drafter	13
	Designer	13
	Checker	13
	Illustrator	14
	Drafting Supervisor	14
	Types of Companies	15
	Functionalized Companies	15
	Projectized Companies	15
	Government Contractors	16
	Skills Required	17
	Communication Skills	17
	Technical Skills	17
	Drafting Evaluations	17
Chapter 2	Block, Single Line, Flow, Decision, and Process Diagrams	19
	Types of Diagrams	19
	Block Diagrams	19
	Single Line Diagrams	25
	Flow Diagrams	26
Chapter 3	Electronics Symbols, Components, and References	33
	Relationship of Components and Symbols	34
	Resistor	34
	Fixed Resistors	35
	Variable Resistors	35
	Semiconductors	37
	Diode	38
	Zener Diode	38
	Bridge Rectifier	39
	Transistor	39
	Integrated Circuits	40
	Capacitors and AC/DC Components	44
	General Capacitor	44
	Variable Capacitor	45
	Polarized Capacitor	45
	Coil, Choke, or Inductor	46
	Solenoid	46
	Relays	46
	Transformer	46
	Switch	48
	Battery	50
	Antenna	50
	Protective Devices	50
	Crystal	52
	Oscillator	53
	Filters	53
	Tubes	54
	Connectors	54
	Cable, Conductor, or Wire	54
	Input and Output Devices	54
	Lights	55
	Meters	57
	Rotating Machinery	58
	Circuit Returns	59
	Components Values	60
	Standards	60
	Symbol Modifiers	60
Chapter 4	Schematic and Logic Diagrams	63
	Schematic and Logic Diagrams	63
	Schematic Diagrams	63
	Drafting Schematics	64
	Reference Designations	68
	Series and Parallel Circuits	69
	Logic Diagrams	71
	Types of Diagrams	71
	Logic Elements	71
Chapter 5	Schematic and Logic Diagrams	83
	Wiring Methods	83
	Schematic	83
	Wire List	84
	Point-to-Point Wiring Diagrams	89
	Pictorial Point-to-Point Drawing	90
	Highway Wiring Diagrams	91
	Baseline Diagrams	91
	Interconnections Diagrams	92
	Cable Assembly Drawings	92
	Wire (Cable) Harness Assembly Drawings	92
	Flexible Printed Wiring	96
	Typical Notes Used on Wiring Diagrams	96
	Reference Designations	97
	Component Representation	97
	Terminal Identification	98
Chapter 6	Printed Circuitry	103
	Schematic or Logic Diagrams	103
	Design Data	103
	Advantages of Printed Circuits	105
	PCB Layout	105
	Design Settings	106
	Conductors	106
	Board Size and Style	107
	A Sketch for a Layout	109
	Prepare Formal Layout	110
	Printed Circuit Artwork	114
	Creating the Manufacturing Tool	114
	Etching a PCB	116
	Printed Circuit Drawings	119
Chapter 7	Computer-Generated Printed Circuit Boards	131
	Dedicated Electronic Circuit Software	131
	Creating Symbols	133
	Parts	134
	Library Utilities	135
	PCBs	135
	Auto Routing the Board	135
	Component Placement	136
	Lines to Place First	137
	Clearances between Conductors	137
	Void Areas	137
	Routing Schedule	138
	Layer Controls	139
	Pad and Via Type	139
	Power and Ground Plane Mask	139
	Working with the Routing System	139
	Record of Placement of Components	140
Chapter 8	Enclosure Drawings	143
	Enclosure Drawings	143
	Fastening	143
	Welding	144
	Mechanical Fasteners	145
	Adhesives	148
	Preparing for Finishing Process	148
	Finishes	148
	Metals and Finishes	149
	Materials for Packaging	149
	Plastics	149
	Aluminums	150
	Steels	151
	Drawings for Weldments	151
	Working with Sheet Metal	155
	Bending Sheet Metal	155
	Sheet Metal Terms	156
	Calculating Bend Allowance	160
	Bend Dimensioning	160
	Figuring Set-Back for Flat Pattern	161
	Corner Bend Relief	161
	Limitations in Sheet Metal	161
	Dimensioning	163
	Methods of Dimensioning	164
	Dimensioning Terms	165
	Dimensioning Rules	165
	Angular Dimensions	166
	Developments	166
Chapter 9	Pictorial Drawings	171
	Pictorial Drawings	171
	Axonometric Drawings	171
	Isometric Drawings	172
	Oblique Drawings	181
	Selecting the View	181
	Cavalier Obliques	181
	Cabinet Obliques	182
	Holes in Oblique Drawings	182
	Exploded Drawings	183
	Reference Section	187
	Index	197