2.EX
Chapter 2 Example Circuits
This page collects interactive circuits and simulations from Chapter 2 of Ultimate Electronics Book: Linear Direct Current (DC) Electronics.
Exercise Click any circuit to open in a new tab. Most include simulations.
From Chapter 2.1 Electrons at Rest:
Electric forces, fields, potentials, and the behavior of electric charge within materials.
From Chapter 2.4 Ideal Sources:
Ideal voltage sources, ideal current sources, and non-ideal sources with internal resistance.
From Chapter 2.5 Ground:
Ground as a voltage reference, physical concept, and advanced use in high-speed design, antenna ground planes, and undesired ground loops.
From Chapter 2.6 Resistance and Ohm’s Law:
How to solve Ohm’s Law problems for resistors. The microscopic reasons why Ohm’s Law is macroscopically linear.
From Chapter 2.7 Power:
Sources, loads, and the flow of energy in a circuit. Efficiency, instantaneous and average power, and conservation laws.
From Chapter 2.8 Practical Resistors: Manufacturing Tolerances, Common Values, and Color Codes:
Standard resistor values, packages, matching, and accuracy versus cost tradeoffs.
From Chapter 2.11 Practical Resistors: Potentiometers:
Adjustable resistance by mechanically sliding a contact along a resistive strip of material.
From Chapter 2.12 Resistors in Series & Parallel:
Building intuition for series and parallel circuits. Solving resistor networks.
From Chapter 2.13 Kirchhoff’s Voltage Law and Kirchhoff’s Current Law:
How to write the fundamental equations describing the structure of any circuit from first principles.
From Chapter 2.14 Labeling Voltages, Currents, and Nodes:
Rules for identifying specific currents and voltages to ensure KCL and KVL equations are applied properly.
From Chapter 2.15 Solving Circuit Systems:
A six-step process for solving any linear DC circuit, with examples.
From Chapter 2.16 Superposition:
Decompose a complicated problem into much simpler subproblems, one source at a time.
From Chapter 2.17 Open Circuit and Short Circuit:
Special behavior at the two extremes of resistance: zero and infinity.
From Chapter 2.18 Thevenin Equivalent and Norton Equivalent Circuits:
Transform a circuit into an externally-equivalent model with only two components for easier analysis.
From Chapter 2.19 Maximum Power Transfer and Impedance Matching:
How and when to optimize for maximum power transfer, maximum efficiency, maximum signal transfer, impedance matching, or minimum loading.
From Chapter 2.20 Maximum Signal Transfer and Minimizing Interstage Loading:
How to connect the output of one stage of an analog circuit to the input of the next without losing too much of your signal.
From Chapter 2.21 Dependent (Controlled) Sources:
Sources that are proportional to other currents or voltages in the circuit. A powerful tool in analysis and design.
From Chapter 2.22 Dependent Source Feedback:
Surprising and useful effects happen when the output of a dependent source ‘feeds back’ to modify the controlling value.
From Chapter 2.23 Superposition with Dependent Sources:
Superposition’s ‘turn off all sources but one’ requires careful interpretation when a circuit contains dependent sources.
From Chapter 2.24 Switches:
Switches, buttons, multiple steady states, and nine ways to simulate circuits with switches.
From Chapter 2.25 Voltage Dividers:
Extremely common 2+ resistor configuration. Approximations, design guidelines. LED current controller example.