Categories

Contactors

Textbook

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

AC Motor Control Circuits

Worksheets - Electric Vehicles

Perhaps the most challenging aspect of interpreting ladder diagrams,…

What is Alternating Current (AC)?

Textbook

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

AC Instrumentation Transducers

Textbook

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

Automotive Alternator

Textbook

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

DC Generator Theory

Worksheets - Electric Vehicles

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

Single-phase Induction Motors

Textbook

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

Synchronous Motors

Textbook

Single Phase Synchronous Motors Single-phase synchronous motors are…

Inductive Reactance

Worksheets - Electric Vehicles

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

Wound Rotor Induction Motors

Textbook

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

Bipolar Junction Transistors as Switches

Worksheets - Electric Vehicles

Solid-state switching circuits usually keep their constituent…

AC Motor Theory

Worksheets - Electric Vehicles

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

Servo Motor Systems

Worksheets - Electric Vehicles

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

DC Motor Control Circuits

Worksheets - Electric Vehicles

How is it possible to electrically measure the torque output by a…

Stepper Motors

Textbook

Stepper Motor vs Servo Motor A stepper motor is a…

Motor Control Circuits

Textbook

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

DC Motor Theory

Worksheets - Electric Vehicles

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

Tesla Polyphase Induction Motors

Textbook

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

Oscilloscope Trigger Controls

Worksheets - Electric Vehicles

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

Reluctance Motor

Textbook

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

Introduction to AC Motors

Textbook

After the introduction of the DC electrical distribution system by…

Flyback Switch Mode Regulator Calculator

Tools

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

Torque Conversion Calculator

Tools

A tool designed to convert between units of torque

Induction Motor

Textbook

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

Bipolar Junction Transistors as Switches

Worksheets - Electric Vehicles

Solid-state switching circuits usually keep their constituent…

Contactors

Textbook

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

Servo Motor Systems

Worksheets - Electric Vehicles

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

Stepper Motors

Worksheets - Electric Vehicles

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

Design Project: DC Motor

Worksheets - Electric Vehicles

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

Brushless DC Motor

Textbook

Brushless DC motors were developed from conventional brushed DC motors…

Tesla Polyphase Induction Motors

Textbook

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

Reluctance Motor

Textbook

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

Single-phase Induction Motors

Textbook

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

AC Commutator Motors

Textbook

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

Microcontroller Principles

Worksheets - Electric Vehicles

Read the following quotation, and then research the term…

Electric Shock

Worksheets - Electric Vehicles

It is sometimes said regarding electrical safety that, Ït’s not the…

Pulse Width Modulation

Textbook

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

Stepper Motor Calculator

Tools

A tool designed to calculate the maximum speed, minimum time per step and maximum power of a stepper motor

Vacuum Tube Audio Amplifier

Textbook

PARTS AND MATERIALS One 12AX7 dual triode vacuum tube Two power…

Rectifier Circuits

Worksheets - Electric Vehicles

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

Flyback Switch Mode Regulator Calculator

Tools

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

Numbers and Symbols

Textbook

The expression of numerical quantities is something we tend to take…

Practical Considerations - Batteries

Textbook

When connecting batteries together to form larger “banks”…

Rectifying Diodes

Worksheets - Electric Vehicles

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

Calculus for Electric Circuits

Worksheets - Electric Vehicles

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

Bipolar Junction Transistors in Active Mode

Worksheets - Electric Vehicles

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

The Exclusive-OR Function: The XOR Gate

Textbook

What Is an XOR Gate? One element conspicuously missing from the set of…

Simple Vector Addition

Textbook

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

Active Filters

Worksheets - Electric Vehicles

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

Voltage Divider

Textbook

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

Autotransformers

Worksheets - Electric Vehicles

How much voltage is there between the following pairs of points in…

Servo Motor Systems

Worksheets - Electric Vehicles

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

Calculating Electric Power

Textbook

Learn the Power Formula We’ve seen the formula for determining…

Flash ADC

Textbook

Also called the parallel A/D converter, this circuit is the simplest…

Linear Computational Circuitry

Worksheets - Electric Vehicles

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

Special-purpose Batteries

Textbook

Mercury Standard Cell Back in the early days of electrical measurement…

Three-phase Power Systems

Textbook

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

An Analogy for Divided Feedback

Textbook

A helpful analogy for understanding divided feedback amplifier…

Absolute dB scales

Textbook

Decibel as Absolute Unit of Power It is also possible to use the…

Resistors

Worksheets - Electric Vehicles

Shown here is the schematic symbol for a resistor: What is the purpose…