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Automotive Alternator

Textbook

Project Parts and Materials Automotive alternator (one required, but…

Inductive Reactance

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

Stepper Motors

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

Synchronous Motors

Textbook

Single Phase Synchronous Motors Single-phase synchronous motors are…

Motor Control Circuits

Textbook

The interlock contacts installed in the previous section’s motor…

Single-phase Induction Motors

Textbook

A three-phase motor may be run from a single-phase power source.…

AC Instrumentation Transducers

Textbook

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

Flyback Switch Mode Regulator Calculator

Tools

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

Tesla Polyphase Induction Motors

Textbook

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

DC Motor Theory

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If the ends of a wire loop are attached to two half-circular metal…

Introduction to AC Motors

Textbook

After the introduction of the DC electrical distribution system by…

Torque Conversion Calculator

Tools

A tool designed to convert between units of torque

AC Motor Control Circuits

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Perhaps the most challenging aspect of interpreting ladder diagrams,…

Wound Rotor Induction Motors

Textbook

A wound rotor induction motor has a stator like a squirrel cage…

What is Alternating Current (AC)?

Textbook

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

Bipolar Junction Transistors as Switches

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Solid-state switching circuits usually keep their constituent…

Design Project: DC Motor

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The armature windings of your DC motor will have very low resistance.…

Reluctance Motor

Textbook

The variable reluctance motor is based on the principle that an…

AC Generator Theory

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

Selsyn (Synchro) Motors

Textbook

Normally, the rotor windings of a wound rotor induction motor are…

More on AC “polarity”

Textbook

Complex numbers are useful for AC circuit analysis because they…

Passive Filter Circuits

Worksheets - Motor Control

In very simple, qualitative terms, rate the impedance of capacitors…

Series and Parallel Component Equivalent Values

Textbook

Series and Parallel Resistances     Series and Parallel…

Derivative of a Constant

Textbook

    (“c” being a constant)   RELATED…

Shift Registers: Parallel-in, Serial-out (PISO) Conversion

Textbook

Parallel-in/ serial-out shift registers do everything that the…

The DIAC

Textbook

Like all diodes, Shockley diodes are unidirectional devices; that is,…

Noise Figure and Noise Temperature Calculator

Tools

This calculator computes the noise figure and noise temperature in a system

Simple Series Circuits

Textbook

On this page, we’ll outline the three principles you should…

The R/2nR DAC: Binary-Weighted-Input Digital-to-Analog Converter

Textbook

What Is a R/2nR DAC Circuit? The R/2nR DAC circuit, otherwise known as…

Basic Operational Amplifiers

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Determine the output voltage polarity of this op-amp (with reference…

Introduction to Discrete Semiconductor Circuits

Textbook

A semiconductor device is one made of silicon or any number of other…

Voltage and Current Calculations

Textbook

There’s a sure way to calculate any of the values in a reactive…

Antenna Downtilt and Coverage Calculator

Tools

This calculator will determine the correct antenna downtilt angle given the heights of the antennas and distance between them.

Mutual Inductance

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When an electric current is passed through a coil of wire, what…

Basic Ohmmeter Use

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Explain how an ohmmeter is able to measure the resistance of a…

High-Reliability Circuits

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

Simple Vector Addition

Textbook

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

Algebraic Equation Manipulation for Electric Circuits

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The electrical resistance of a conductor at any temperature may be…

Logarithms for Analog Circuits

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The concept of a mathematical power is familiar to most students of…

Shift Registers: Serial-in, Serial-out

Textbook

Serial-in, serial-out shift registers delay data by one clock time for…

Calculus for Electric Circuits

Worksheets - Motor Control

∫f(x) dx Calculus alert! Calculus is a branch of mathematics that…

The common-drain Amplifier (JFET)

Textbook

RELATED WORKSHEETS: JFET Amplifiers Worksheet

Protective Relays

Textbook

A special type of relay is one that monitors the current, voltage,…

Series Resistor-Capacitor Circuits

Textbook

In the last section, we learned what would happen in simple…

Tube Parameters

Textbook

For bipolar junction transistors, the fundamental measure of…

Electric Fields and Capacitance

Textbook

Introduction Whenever an electric voltage exists between two separated…

Solving for Unknown Time

Textbook

Sometimes it is necessary to determine the length of time that a…

Trace Resistance Calculator

Tools

This calculator determines the resistance of a microstrip trace

The J-K Flip-Flop

Textbook

Another variation on a theme of bistable multivibrators is the J-K…

Introduction to Junction Field-effect Transistors (JFET)

Textbook

A transistor is a linear semiconductor device that controls current…

Capacitor Impedance Calculator

Tools

This tool calculates a capacitor's reactance for a given capacitance value and signal frequency.

Electron Versus Conventional Flow

Worksheets - Motor Control

In this electrical circuit, trace the direction of current through the…

Right Triangle Trigonometry

Textbook

  A right triangle is defined as having one angle precisely…

Waveguide Calculator (Circular)

Tools

This tool calculates the cutoff frequency of a circular waveguide

Rectifier Circuits

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

Three-phase Power Systems

Textbook

What is Split-Phase Power Systems? Split-phase power systems achieve…

Microstrip Trace Width Calculator

Tools

This tool is designed to compute for the trace width of a microstrip

Ohm’s Law

Textbook

PARTS AND MATERIALS Calculator (or pencil and paper for doing…

Positive Feedback

Textbook

As we’ve seen, negative feedback is an incredibly useful…

Rectifier/Filter Circuit

Textbook

PARTS AND MATERIALS Low-voltage AC power supply Bridge rectifier pack…