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Free Lessons in Electric Circuits

A free series of textbooks on the subjects of electricity and electronics. A must for every engineering student and a good reference and refresher for experienced engineers.

Thanks to Tony R. Kuphaldt for the free training tutorials.


Volume I - DC Electric Circuits
(pdf ~6MB)
Chapter 1: BASIC CONCEPTS OF ELECTRICITY
Chapter 2: OHM'S LAW
Chapter 3: ELECTRICAL SAFETY
Chapter 4: SCIENTIFIC NOTATION AND METRIC PREFIXES
Chapter 5: SERIES AND PARALLEL CIRCUITS
Chapter 6: DIVIDER CIRCUITS AND KIRCHHOFF'S LAWS
Chapter 7: SERIES-PARALLEL COMBINATION CIRCUITS
Chapter 8: DC METERING CIRCUITS
Chapter 9: ELECTRICAL INSTRUMENTATION SIGNALS
Chapter 10: DC NETWORK ANALYSIS
Chapter 11: BATTERIES AND POWER SYSTEMS
Chapter 12: THE PHYSICS OF CONDUCTORS AND INSULATORS
Chapter 13: CAPACITORS
Chapter 14: MAGNETISM AND ELECTROMAGNETISM
Chapter 15: INDUCTORS
Chapter 16: RC AND L/R TIME CONSTANTS


Volume II - AC Electric Circuits
(pdf ~3MB)
Chapter 1: BASIC AC THEORY
Chapter 2: COMPLEX NUMBERS
Chapter 3: REACTANCE AND IMPEDANCE -- INDUCTIVE
Chapter 4: REACTANCE AND IMPEDANCE -- CAPACITIVE
Chapter 5: REACTANCE AND IMPEDANCE -- R, L, AND C
Chapter 6: RESONANCE
Chapter 7: MIXED-FREQUENCY AC SIGNALS
Chapter 8: FILTERS
Chapter 9: TRANSFORMERS
Chapter 10: POLYPHASE AC CIRCUITS
Chapter 11: POWER FACTOR
Chapter 12: AC METERING CIRCUITS
Chapter 13: AC MOTORS
Chapter 14: TRANSMISSION LINES




















Volume III - Semiconductors
(pdf ~2MB)
Chapter 1: AMPLIFIERS AND ACTIVE DEVICES
Chapter 2: SOLID-STATE DEVICE THEORY
Chapter 3: DIODES AND RECTIFIERS
Chapter 4: BIPOLAR JUNCTION TRANSISTORS
Chapter 5: JUNCTION FIELD-EFFECT TRANSISTORS
Chapter 6: INSULATED-GATE FIELD-EFFECT TRANSISTORS
Chapter 7: THYRISTORS
Chapter 8: OPERATIONAL AMPLIFIERS
Chapter 9: PRACTICAL ANALOG SEMICONDUCTOR CIRCUITS
Chapter 10: ACTIVE FILTERS
Chapter 11: DC MOTOR DRIVES
Chapter 12: INVERTERS AND AC MOTOR DRIVES
Chapter 13: ELECTRON TUBES


Volume IV - Digital Electric Circuits
(pdf ~2.75MB)
Chapter 1: NUMERATION SYSTEMS
Chapter 2: BINARY ARITHMETIC
Chapter 3: LOGIC GATES
Chapter 4: SWITCHES
Chapter 5: ELECTROMECHANICAL RELAYS
Chapter 6: LADDER LOGIC
Chapter 7: BOOLEAN ALGEBRA
Chapter 8: KARNAUGH MAPPING
Chapter 9: COMBINATIONAL LOGIC FUNCTIONS
Chapter 10: MULTIVIBRATORS
Chapter 11: COUNTERS
Chapter 12: SHIFT REGISTERS
Chapter 13: DIGITAL-ANALOG CONVERSION
Chapter 14: DIGITAL COMMUNICATION
Chapter 15: DIGITAL STORAGE (MEMORY)
Chapter 16: PRINCIPLES OF DIGITAL COMPUTING








Volume V - Reference
(pdf ~0.7MB)
Chapter 1: USEFUL EQUATIONS AND CONVERSION FACTORS
Chapter 2: RESISTOR COLOR CODES
Chapter 3: CONDUCTOR AND INSULATOR TABLES
Chapter 4: ALGEBRA REFERENCE
Chapter 5: TRIGONOMETRY REFERENCE
Chapter 6: CALCULUS REFERENCE
Chapter 7: USING THE SPICE CIRCUIT SIMULATION PROGRAM
Chapter 8: TROUBLESHOOTING -- THEORY AND PRACTICE
Chapter 9: CIRCUIT SCHEMATIC SYMBOLS
Chapter 10: PERIODIC TABLE OF THE ELEMENTS


Volume VI - Experiments
(pdf ~3.7MB)
Chapter 1: INTRODUCTION
Chapter 2: BASIC CONCEPTS AND TEST EQUIPMENT
Chapter 3: DC CIRCUITS
Chapter 4: AC CIRCUITS
Chapter 5: DISCRETE SEMICONDUCTOR CIRCUITS
Chapter 6: ANALOG INTEGRATED CIRCUITS
Chapter 7: DIGITAL INTEGRATED CIRCUITS


Online version of the books is available at http://www.ibiblio.org/kuphaldt/electricCircuits
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