Nguồn ngoài
Electric Circuits I Direct Current
Modern life could not exist if it were not for electricity and electronics. The history of electricity starts more than two thousand years ago, with the Greek philosopher Thales being the earliest known researcher into electricity. But it was Alessandro Volta who created the most common DC power source, the battery (for this invention the unit Volt was named after him). Direct current (also known as DC) is the flow of charged particles in one unchanging direction (most commonly found as electron
- Tác giả
- Tony R. Kuphaldt
- Nhà xuất bản
- Bellingham Technical College
- Nguồn
- LibreTexts
- Giấy phép
- GNU FDL
- Ngôn ngữ
- EN
Mục lục· 136 mục
- 01: Basic Concepts of Electricity
- 1.01: Static Electricity
- 1.02: Conductors Insulators and Electron Flow
- 1.03: What Are Electric Circuits
- 1.04: Voltage and Current
- 1.05: Resistance
- 1.06: Voltage and Current in a Practical Circuit
- 1.07: Conventional Versus Electron Flow
- 02: Ohm's Law
- 2.01: Ohms Law - How Voltage Current and Resistance Relate
- 2.02: An Analogy for Ohms Law
- 2.03: Power in Electric Circuits
- 2.04: Calculating Electric Power
- 2.05: Resistors
- 2.06: Nonlinear Conduction
- 2.07: Circuit Wiring
- 2.08: Polarity of voltage drops
- 2.09: Computer Simulation of Electric Circuits
- 03: Electrical Safety
- 3.01: The Importance of Electrical Safety
- 3.02: Physiological Effects of Electricity
- 3.03: Shock Current Path
- 3.04: Ohms Law (again)
- 3.05: Safe Practices
- 3.06: Emergency Response
- 3.07: Common Sources of Hazard
- 3.08: Safe Circuit Design
- 3.09: Safe Meter Usage
- 3.10: Electric Shock Data
- 04: Scientific Notation And Metric Prefixes
- 4.01: Scientific Notation
- 4.02: Arithmetic with Scientific Notation
- 4.03: Metric Notation
- 4.04: Metric Prefix Conversions
- 4.05: Hand Calculator Use
- 4.06: Scientific Notation in SPICE
- 05: Series And Parallel Circuits
- 5.01: What are Series and Parallel Circuits
- 5.02: Simple Series Circuits
- 5.03: Simple Parallel Circuits
- 5.04: Conductance
- 5.05: Power Calculations
- 5.06: Correct use of Ohms Law
- 5.07: Component Failure Analysis
- 5.08: Building Simple Resistor Circuits
- 06: Divider Circuits and Kirchhoff's Laws
- 6.01: Voltage Divider Circuits
- 6.02: Kirchhoffs Voltage Law (KVL)
- 6.03: Current Divider Circuits and the Current Divider Formula
- 6.04: Kirchhoffs Current Law (KCL)
- 07: Series-parallel Combination Circuits
- 7.01: What is a Series-Parallel Circuit
- 7.02: Analysis Techniques for Series Parallel Resistor Circuits
- 7.03: Re-drawing Complex Schematics
- 7.04: Component Failure Analysis (Continued)
- 7.05: Building Series-Parallel Resistor Circuits
- 08: DC Metering Circuits
- 8.01: What is a Meter
- 8.02: Voltmeter Design
- 8.03: Voltmeter Impact on Measured Circuit
- 8.04: Ammeter Design
- 8.05: Ammeter Impact on Measured Circuit
- 8.06: Ohmmeter Design
- 8.07: High Voltage Ohmmeters
- 8.08: Multimeters
- 8.09: Kelvin (4-wire) Resistance Measurement
- 8.10: Bridge Circuits
- 8.11: Wattmeter Design
- 8.12: Creating Custom Calibration Resistances
- 09: Electrical Instrumentation Signals
- 9.01: Analog and Digital Signals
- 9.02: Voltage Signal Systems
- 9.03: Current Signal Systems
- 9.04: Tachogenerators
- 9.05: Thermocouples
- 9.06: pH Measurement
- 9.07: Strain Gauges
- 10: DC Network Analysis
- 10.01: What is Network Analysis?
- 10.02: Branch Current Method
- 10.03: Mesh Current Method and Analysis
- 10.04: Node Voltage Method
- 10.05: Introduction to Network Theorems
- 10.06: Millman’s Theorem
- 10.07: Superposition Theorem
- 10.08: Thevenin’s Theorem
- 10.09: Norton’s Theorem
- 10.10: Thevenin-Norton Equivalencies
- 10.11: Millman’s Theorem Revisited
- 10.12: Maximum Power Transfer Theorem
- 10.13: Δ-Y and Y-Δ Conversions
- 11: Batteries And Power Systems
- 11.01: Electron Activity in Chemical Reactions
- 11.02: Battery Construction
- 11.03: Battery Ratings
- 11.04: Special-purpose Batteries
- 11.05: Practical Considerations - Batteries
- 12: Physics of Conductors and Insulators
- 12.01: 12.1 Introduction to Conductance and Conductors
- 12.02: Conductor Size
- 12.03: Conductor Ampacity
- 12.04: Fuses
- 12.05: Specific Resistance
- 12.06: Temperature Coefficient of Resistance
- 12.07: Superconductivity
- 12.08: Insulator Breakdown Voltage
- 13: Capacitors
- 13.01: Electric Fields and Capacitance
- 13.02: Capacitors and Calculus
- 13.03: Factors Affecting Capacitance
- 13.04: Series and Parallel Capacitors
- 13.05: Practical Considerations - Capacitors
- 14: Magnetism and Electromagnetism
- 14.01: Permanent Magnets
- 14.02: Electromagnetism
- 14.03: Magnetic Units of Measurement
- 14.04: Permeability and Saturation
- 14.05: Electromagnetic Induction
- 14.06: Mutual Inductance
- 15: Inductors
- 15.01: Magnetic Fields and Inductance
- 15.02: Inductors and Calculus
- 15.03: Factors Affecting Inductance
- 15.04: Series and Parallel Inductors
- 15.05: Practical Considerations - Inductors
- 16: RC and L
- R Time Constants
- 16.01: Electrical Transients
- 16.02: Capacitor Transient Response
- 16.03: Inductor Transient Response
- 16.04: Voltage and Current Calculations
- 16.05: Why L
- R and not LR?
- 16.06: Complex Voltage and Current Calculations
- 16.07: Complex Circuits
- 16.08: Solving for Unknown Time