Most students of electricity begin their study with what is known as…
Brushless DC motors were developed from conventional brushed DC motors…
The armature windings of your DC motor will have very low resistance.…
A wound rotor induction motor has a stator like a squirrel cage…
Just as devices have been made to measure certain physical quantities…
How is it possible to electrically measure the torque output by a…
It is sometimes said regarding electrical safety that, Ït’s not the…
Stepper Motor vs Servo Motor A stepper motor is a…
Don’t just sit there! Build something!! Learning to analyze digital…
Generators used in battery-charging systems must be regulated so as to…
PARTS AND MATERIALS AC power source: 120VAC Capacitor, 3.3 µF…
PARTS AND MATERIALS AC power source: 120VAC Capacitor, 3.3 µF…
A tool designed to convert between units of torque
AC Motors Perhaps the most important benefit of polyphase AC power…
A chandelier has five light bulbs in it, and one of them is not…
As an electric current is passed through a coil of wire, it creates a…
Charles Proteus Steinmetz’s first job after arriving in America…
After the introduction of the DC electrical distribution system by…
The interlock contacts installed in the previous section’s motor…
All About Contactors When a relay is used to switch a large amount of…
Electromechanical watt-hour meters use an aluminum disk that is spun…
PARTS AND MATERIALS One 12AX7 dual triode vacuum tube Two power…
Because it takes energy to force charge to flow against the opposition…
Just as devices have been made to measure certain physical quantities…
PARTS AND MATERIALS 4017 decade counter/divider (Radio Shack catalog…
Counting practice: count from zero to thirty-one in binary, octal, and…
Roman Numerals The Romans devised a system that was a substantial…
In this circuit, three resistors receive the same amount of voltage…
A similar effect happens in series inductive/capacitive circuits. When…
Shown here is the schematic symbol for a resistor: What is the purpose…
A tool designed to calculate the power density of an antenna
By definition, a low-pass filter is a circuit offering easy passage to…
PARTS AND MATERIALS One N-channel junction field-effect transistor,…
Over the course of the next few chapters, you will learn that AC…
A microcontroller is a specialized type of digital computer used to…
Don’t just sit there! Build something!! Learning to mathematically…
Instantaneous Values in AC Circuits Pure resistive AC circuit:…
What is a Synchronous Counter? A synchronous counter, in contrast to…
Note that the direction of the arrow at the gate indicates the…
To enter numbers in scientific notation into a hand calculator, there…
There are three basic factors of capacitor construction determining…
For reference, this section introduces the terminology used in some…
