Categories

AC Commutator Motors

Textbook

Charles Proteus Steinmetz’s first job after arriving in America…

AC Generator Theory

Worksheets - Motor Control

If an electric current is passed through this wire, which direction…

Stepper Motors

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

Boolean Algebra

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

AC Motor Theory

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Electromechanical watt-hour meters use an aluminum disk that is spun…

Stepper Motors

Textbook

Stepper Motor vs Servo Motor A stepper motor is a…

What is Alternating Current (AC)?

Textbook

Most students of electricity begin their study with what is known as…

Polyphase Motor Design

Textbook

AC Motors Perhaps the most important benefit of polyphase AC power…

Flyback Switch Mode Regulator Calculator

Tools

A calculator for computing several parameters needed in the design of a flyback switch mode regulator

Servo Motor Systems

Worksheets - Motor Control

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

Induction Motor, Large

Textbook

PARTS AND MATERIALS AC power source: 120VAC Capacitor, 3.3 µF…

Torque Conversion Calculator

Tools

A tool designed to convert between units of torque

Contactors

Textbook

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

DC Generator Theory

Worksheets - Motor Control

Generators used in battery-charging systems must be regulated so as to…

Oscilloscope Trigger Controls

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A very useful tool for observing rotating objects is a strobe light.…

Introduction to AC Motors

Textbook

After the introduction of the DC electrical distribution system by…

Inductive Reactance

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

AC Instrumentation Transducers

Textbook

Just as devices have been made to measure certain physical quantities…

Tesla Polyphase Induction Motors

Textbook

Most AC motors are induction motors. Induction motors are favored due…

Brushless DC Motor

Textbook

Brushless DC motors were developed from conventional brushed DC motors…

More on Spectrum Analysis

Textbook

Computerized Fourier analysis, particularly in the form of the FFT…

Demultiplexers

Textbook

A demultiplexer, sometimes abbreviated dmux, is a circuit that has one…

Susceptance and Admittance

Textbook

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

DC Branch Current Analysis

Worksheets - Motor Control

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

Coefficients of Specific Resistance

Textbook

Specific resistance at 20o C:  Material Element/Alloy ohm-cmil/ft…

Kelvin (4-wire) Resistance Measurement

Textbook

Suppose we wished to measure the resistance of some component located…

Simple Vector Addition

Textbook

Remember that vectors are mathematical objects just like numbers on a…

Inductor Sizing Equation

Textbook

The Inductance Formula     Wheeler’s formulas for…

The Unijunction Transistor (UJT)

Textbook

Unijunction transistor: Although a unijunction transistor is not a…

Bit Grouping

Textbook

The singular reason for learning and using the binary numeration…

CMOS Logic Gates

Worksheets - Motor Control

Counting practice: count from zero to thirty-one in binary, octal, and…

Ionization (gas-filled) Tubes

Textbook

So far, we’ve explored tubes which are totally…

Switch Types

Textbook

Though it may seem strange to cover the elementary topic of electrical…

Rate-of-change Indicator

Textbook

PARTS AND MATERIALS Two 6 volt batteries Capacitor, 0.1 µF…

3-bit Binary Counter

Textbook

PARTS AND MATERIALS 555 timer IC (Radio Shack catalog # 276-1723) One…

Circuits and the Speed of Light

Textbook

Suppose we had a simple one-battery, one-lamp circuit controlled by a…

Ohmmeter Design

Textbook

Though mechanical ohmmeter (resistance meter) designs are rarely used…

Finite-state Machine

Textbook

Feedback is a fascinating engineering principle. It can turn a rather…

Introduction to Complex Numbers

Textbook

If I needed to describe the distance between two cities, I could…

Friis Transmission Calculator

Tools

This calculator computes the power received by an antenna using Friis formula

Bipolar Junction Transistors

Textbook

The bipolar junction transistor (BJT) was named because its operation…

AC Bridge Circuits

Textbook

As we saw with DC measurement circuits, the circuit configuration…

Inductor Sizing Equation

Textbook

The Inductance Formula     Wheeler’s formulas for…

Time-delay Relays

Textbook

What are Time-Delay Relays? Some relays are constructed with a kind of…

Pulsed-light Sensor

Textbook

PARTS AND MATERIALS Two 6-volt batteries One NPN…

Logic Signal Voltage Levels

Textbook

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

Don’t Care Cells in the Karnaugh Map

Textbook

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

Tracking ADC

Textbook

A third variation on the counter-DAC-based converter theme is, in my…

Commutating Diode

Textbook

PARTS AND MATERIALS 6 volt battery Power transformer, 120VAC step-down…

Phase Rotation

Textbook

Three-Phase Alternator Let’s take the three-phase alternator…

Universal Shift Registers: Parallel-in, Parallel-out

Textbook

The purpose of the parallel-in/ parallel-out shift register is to take…

Band-stop Filters

Textbook

How to Create a Band-stop Filter? Also called band-elimination,…

NAND Gate S-R Enabled Latch

Textbook

PARTS AND MATERIALS 4011 quad NAND gate (Radio Shack catalog #…

Harmonic Phase Sequences

Textbook

In the last section, we saw how the 3rd harmonic and all of its…

Boolean Relationships on Venn Diagrams

Textbook

The fourth example has A partially overlapping B. Though, we will…

Monostable Multivibrators

Textbook

We’ve already seen one example of a monostable multivibrator in…

Switch Types

Textbook

Though it may seem strange to cover the elementary topic of electrical…

Conductance

Textbook

When students first see the parallel resistance equation, the natural…

Impedance

Worksheets - Motor Control

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

An Analogy for Ohm’s Law

Textbook

Ohm’s Law also makes intuitive sense if you apply it to the…