After the introduction of the DC electrical distribution system by…
Brushless DC motors were developed from conventional brushed DC motors…
Generators used in battery-charging systems must be regulated so as to…
A wound rotor induction motor has a stator like a squirrel cage…
Normally, the rotor windings of a wound rotor induction motor are…
If the ends of a wire loop are attached to two half-circular metal…
Just as devices have been made to measure certain physical quantities…
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.
Stepper Motor vs Servo Motor A stepper motor is a…
The variable reluctance motor is based on the principle that an…
Charles Proteus Steinmetz’s first job after arriving in America…
If an electric current is passed through this wire, which direction…
A very useful tool for observing rotating objects is a strobe light.…
At first it may seem pointless to have the four buffer gates following…
Single Phase Synchronous Motors Single-phase synchronous motors are…
Most AC motors are induction motors. Induction motors are favored due…
A tool designed to calculate the maximum speed, minimum time per step and maximum power of a stepper motor
Solid-state switching circuits usually keep their constituent…
How is it possible to electrically measure the torque output by a…
Electromechanical watt-hour meters use an aluminum disk that is spun…
AC Motors Perhaps the most important benefit of polyphase AC power…
Shaded Pole Induction Motor An easy way to provide starting torque to…
Pulse Width Modulation (PWM) uses digital signals to control power…
How is it possible to electrically measure the torque output by a…
In this hands-on electronics experiment, build a multiple LED flasher and learn how to use inductive flyback to generate a voltage pulse that is greater than the supply voltage.
Calculate the voltage output by the secondary winding of a transformer…
As an electric current is passed through a coil of wire, it creates a…
A chandelier has five light bulbs in it, and one of them is not…
A wound rotor induction motor has a stator like a squirrel cage…
The variable reluctance motor is based on the principle that an…
Don’t just sit there! Build something!! Learning to mathematically…
Normally, the rotor windings of a wound rotor induction motor are…
Most students of electricity begin their study with what is known as…
In this hands-on electronics experiment, build an audio amplifier using a vacuum tube (triode) and learn about voltage transformers, how to build a high-voltage DC power supply, and how to use a transformer for impedance matching.
It is sometimes said regarding electrical safety that, Ït’s not the…
A three-phase motor may be run from a single-phase power source.…
In this hands-on electronics experiment, you will use a potentiometer as a variable resistor to control the speed of a motor and learn how to connect a potentiometer as a rheostat.
Don’t just sit there! Build something!! Learning to analyze digital…
All About Contactors When a relay is used to switch a large amount of…
Read the following quotation, and then research the term…
Cathode: This is the electrode that is heated and emits the…
No text on electrical metering could be called complete without a…
The use of variable voltage for instrumentation signals seems a rather…
In this hands-on electronics experiment, you will build a monostable multivibrator using a 555 timer IC and learn about RC time constant charging and how a one-shot timer operates.
Constant rule Rule of sums Rule of differences Product rule Quotient…
Contributors to this chapter are listed in chronological order of…
What hazards might be posed by a circuit with excessive current going…
Tables of specific resistance and temperature coefficient of…
This tool calculates the cutoff frequency of a rectangular waveguide
Note: all angles (x) must be expressed in units of radians for these…
What are Simultaneous Equations and Systems of Equations? The terms…
Don’t just sit there! Build something!! Learning to mathematically…
What is Conductance? In the study of DC circuits, the student of…
What does it mean for an object to have an electric charge? Give an…
In this hands-on electronics experiment, construct a signal generator circuit that creates two different types of ramp signals and learn how capacitors charge when connected to resistors and constant current sources.
This calculator helps determine the resistance of a variable resistor within a Wheatstone bridge circuit or the differential voltage created across the bridge terminals.
An inductor is a passive two-terminal electrical component that…
The Maximum Power Transfer Theorem is not so much a means of analysis…
Electromechanical relays used to start and stop high-power electric…
There are two basic Ohm’s Law equations: one relating voltage,…
