All About Circuits

Latest Test & Measurement Education

Categories

AC Negative Feedback OpAmp Circuits

AC Negative Feedback OpAmp Circuits

Don’t just sit there! Build something!! Learning to mathematically…


Worksheets - Test & Measurement

Basic Electricity Worksheet

Basic Electricity Worksheet

What is the purpose of the switch shown in this schematic diagram?


Worksheets - Test & Measurement

Thyristor Application Circuits

Thyristor Application Circuits

Don’t just sit there! Build something!! Learning to mathematically…


Worksheets - Test & Measurement

Performance-Based Assessments for Network Analysis Competencies

Performance-Based Assessments for Network Analysis Competencies


Worksheets - Test & Measurement

Safety Grounding

Safety Grounding

In simple AC power systems, one of the two conductors is typically…


Worksheets - Test & Measurement

Overcurrent Protection

Overcurrent Protection

What hazards might be posed by a circuit with excessive current going…


Worksheets - Test & Measurement

Peak, Average, and RMS Measurements

Peak, Average, and RMS Measurements

How is it possible to assign a fixed value of voltage or current (such…


Worksheets - Test & Measurement

AC Waveforms

AC Waveforms

Radio waves are comprised of oscillating electric and magnetic fields,…


Worksheets - Test & Measurement

Servo Motor Systems

Servo Motor Systems

Explain the operation of this “H-bridge” motor control circuit: At…


Worksheets - Test & Measurement

Intro Lab - How to Use an Ohmmeter to Measure Resistance

Intro Lab - How to Use an Ohmmeter to Measure Resistance

In this hands-on introduction to electronics, you will experiment with a multimeter and learn how to measure resistance using the ohmmeter function.


Textbook

Batteries

Batteries

If I wanted to build a battery-powered electric drill, would it be…


Worksheets - Test & Measurement

Computational Circuits

Computational Circuits

When someone mentions the word “computer,” a digital…


Textbook

Zener Diodes

Zener Diodes

Don’t just sit there! Build something!! Learning to mathematically…


Worksheets - Test & Measurement

Junction field-effect transistors (JFET)

Junction field-effect transistors (JFET)

Don’t just sit there! Build something!! Learning to mathematically…


Worksheets - Test & Measurement

Rectifier Circuits

Rectifier Circuits

Don’t just sit there! Build something!! Learning to mathematically…


Worksheets - Test & Measurement

DC Lab - Sensitive Voltage Detector With Audio Output

DC Lab - Sensitive Voltage Detector With Audio Output

In this hands-on electronics experiment, you will construct a voltage detector with adjustable sensitivity and audio output, and you will learn a method for detecting small electrical signals without an oscilloscope.


Textbook

IGFET Amplifiers

IGFET Amplifiers

Don’t just sit there! Build something!! Learning to mathematically…


Worksheets - Test & Measurement

Bipolar Transistor Biasing Circuits

Bipolar Transistor Biasing Circuits

Don’t just sit there! Build something!! Learning to mathematically…


Worksheets - Test & Measurement

AC Lab - Automotive Alternator as AC Generator

AC Lab - Automotive Alternator as AC Generator

In this hands-on AC electronics experiment, you will use an automotive alternator to generate three-phase AC voltage and learn how alternators can function as both generators and motors.


Textbook

AC Motor Control Circuits

AC Motor Control Circuits

Perhaps the most challenging aspect of interpreting ladder diagrams,…


Worksheets - Test & Measurement

Millman’s Theorem Revisited

Millman’s Theorem Revisited

You may have wondered where we got that strange equation for the…


Textbook

Bridge Circuits

Bridge Circuits

No text on electrical metering could be called complete without a…


Textbook

Microstrip Impedance Calculator

Microstrip Impedance Calculator

This calculator helps you compute the characteristic impedance of a microstrip.


Tools

Mesh Current Method (Loop Current Method)

Mesh Current Method (Loop Current Method)

This page provides a step-by-step introduction to using the mesh…


Textbook

Pulse Width Modulation

Pulse Width Modulation

Pulse Width Modulation (PWM) uses digital signals to control power…


Textbook

DeMorgan’s Theorems

DeMorgan’s Theorems

A mathematician named DeMorgan developed a pair of important rules…


Textbook

Applying Ohm’s Law—Rules and Methods for Circuit Analysis

Applying Ohm’s Law—Rules and Methods for Circuit Analysis

When analyzing complex series and parallel circuits, it is easy to…


Textbook

Other Specialized Motors

Other Specialized Motors

Shaded Pole Induction Motor An easy way to provide starting torque to…


Textbook

Mixed-Frequency Signals

Mixed-Frequency Signals

What is a harmonic frequency? If an oscillator circuit outputs a…


Worksheets - Test & Measurement

Intermediate Electromagnetism and Electromagnetic Induction

Intermediate Electromagnetism and Electromagnetic Induction

As an electric current is passed through a coil of wire, it creates a…


Worksheets - Test & Measurement

Square Wave Signals

Square Wave Signals

It has been found that any repeating, non-sinusoidal waveform can be…


Textbook

Parallel Circuits and the Application of Ohm’s Law

Parallel Circuits and the Application of Ohm’s Law

In this introduction to parallel resistance circuits, we will explain…


Textbook

Performance-Based Assessments for Analog Integrated Circuit Competencies

Performance-Based Assessments for Analog Integrated Circuit Competencies


Worksheets - Test & Measurement

N-Way Power Divider Calculator

N-Way Power Divider Calculator

This calculator determines the total path loss provided by an RF n-way power splitter.


Tools

AC Lab - LC Tank Circuit

AC Lab - LC Tank Circuit

In this hands-on AC electronics experiment, build a parallel resonant inductor-capacitor circuit and learn about oscillation, resonant frequency, and damping.


Textbook

DC Branch Current Analysis

DC Branch Current Analysis

Don’t just sit there! Build something!! Learning to mathematically…


Worksheets - Test & Measurement

Edge Coupled Stripline Impedance Calculator

Edge Coupled Stripline Impedance Calculator

A calculator for computing the impedance of an edge coupled stripline.


Tools

Performance-Based Assessments for Network Analysis Competencies

Performance-Based Assessments for Network Analysis Competencies


Worksheets - Test & Measurement

Don’t Care Cells in the Karnaugh Map

Don’t Care Cells in the Karnaugh Map

Up to this point we have considered logic reduction problems where…


Textbook

DC Lab - Build Your Own Multimeter

DC Lab - Build Your Own Multimeter

In this hands-on electronics experiment, you will build a simple voltmeter and ammeter while learning some fundamentals about circuit measurements.


Textbook

The Junction Field-effect Transistor (JFET) as a Switch

The Junction Field-effect Transistor (JFET) as a Switch

Like its bipolar cousin, the field-effect transistor may be used as an…


Textbook

More on AC “polarity”

More on AC “polarity”

Complex numbers are useful for AC circuit analysis because they…


Textbook

Trace Resistance Calculator

Trace Resistance Calculator

This calculator determines the resistance of a microstrip trace


Tools

Waveguides

Waveguides

A waveguide is a special form of transmission line consisting of a…


Textbook

Parallel Wire Inductance Calculator

Parallel Wire Inductance Calculator

This tool is designed to calculate the inductance of two parallel wires


Tools

DC Lab - Series Batteries

DC Lab - Series Batteries

In this hands-on electronics experiment, you will connect batteries in series and learn the relationship between the individual battery voltages and the total series voltage.


Textbook

Design Project: Pulse-Width Modulation (PWM) Signal Generator

Design Project: Pulse-Width Modulation (PWM) Signal Generator

What shape of voltage waveform would you expect to measure (using an…


Worksheets - Test & Measurement

Contactors

Contactors

All About Contactors When a relay is used to switch a large amount of…


Textbook

High Voltage Ohmmeters

High Voltage Ohmmeters

Most ohmmeters of the design shown in the previous section utilize a…


Textbook

Susceptance and Admittance

Susceptance and Admittance

What is Conductance? In the study of DC circuits, the student of…


Textbook

Logic Signal Voltage Levels

Logic Signal Voltage Levels

Input Voltages for Logic Gates Logic gate circuits are designed to…


Textbook

DC Lab - Potato Battery

DC Lab - Potato Battery

In this hands-on electronics experiment, you will create a battery from a potato (yes! a potato) and learn about the relationship between chemical energy and electric energy.


Textbook

Computer Simulation of Electric Circuits

Computer Simulation of Electric Circuits

Computers can be powerful tools if used properly, especially in the…


Textbook

Strain Gauges

Strain Gauges

If a strip of conductive metal is stretched, it will become skinnier…


Textbook

Historical, Nonmechanical Memory Technologies

Historical, Nonmechanical Memory Technologies

Perhaps the most ingenious technique was that of the delay line. A…


Textbook

Rules for Limits

Rules for Limits

    RELATED WORKSHEETS: Calculus for Electric Circuits…


Textbook

AC Lab - Automotive Alternator as AC Generator

AC Lab - Automotive Alternator as AC Generator

In this hands-on AC electronics experiment, you will use an automotive alternator to generate three-phase AC voltage and learn how alternators can function as both generators and motors.


Textbook

Larger 4-variable Karnaugh Maps

Larger 4-variable Karnaugh Maps

Knowing how to generate Gray code should allow us to build larger…


Textbook

AC Lab - Phase Shift in a Capacitive Circuit

AC Lab - Phase Shift in a Capacitive Circuit

In this hands-on AC electronics experiment, build a simple RC circuit that demonstrates phase shift and learn how out-of-phase AC voltages do not add algebraically.


Textbook

Protective Relay Circuits

Protective Relay Circuits

Protective relays are special power-sensing devices whose job it is to…


Worksheets - Test & Measurement