Categories

DC Generator Theory

Worksheets - Electromechanical

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

Winding Configurations

Textbook

Transformers with Multiple Secondaries Transformers are very versatile…

AC Commutator Motors

Textbook

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

DC Motor Control Circuits

Worksheets - Electromechanical

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

Switches

Worksheets - Electromechanical

What is the purpose of the switch shown in this schematic diagram?

Impedance Matching With Transformers

Worksheets - Electromechanical

Suppose you were to take a 3 kW electric heater rated for 240 VAC and…

Time-Delay Electromechanical Relays

Worksheets - Electromechanical

What does the normal status of an electrical switch refer to?…

Protective Relay Circuits

Worksheets - Electromechanical

Protective relays are special power-sensing devices whose job it is to…

Motor Control Circuits

Textbook

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

Light-Pulse Switch

Worksheets - Electromechanical

It is fairly important to use large value resistors (10 MΩ works…

Switch Contact Design

Textbook

A switch can be constructed with any mechanism bringing two conductors…

Step-up, Step-down, and Isolation Transformers

Worksheets - Electromechanical

Calculate the voltage output by the secondary winding of a transformer…

The Silicon-Controlled Switch (SCS)

Textbook

If we take the equivalent circuit for an SCR and add another external…

Three-phase Transformer Circuits

Textbook

Since three-phase is used so often for power distribution systems, it…

Latch Circuits

Worksheets - Electromechanical

What do you think this logic buffer gate will do, with the output…

Other Specialized Motors

Textbook

Shaded Pole Induction Motor An easy way to provide starting torque to…

Permissive and Interlock Circuits

Textbook

A practical application of switch and relay logic is in control…

Fail-safe Design

Textbook

Logic circuits, whether comprised of electromechanical relays or…

Voltage Regulation

Textbook

As we saw in a few SPICE analyses earlier in this chapter, the output…

Contact “Normal” State and Make/Break Sequence

Textbook

Any kind of switch contact can be designed so that the contacts…

Setting Up a Home Lab

Textbook

In order to build the circuits described in this volume, you will need…

The Common-collector Amplifier

Textbook

Our next transistor configuration to study is a bit simpler for gain…

Sum and Product Notation

Textbook

For reference, this section introduces the terminology used in some…

TTL NAND and AND gates

Textbook

Suppose we altered our basic open-collector inverter circuit, adding a…

Power Added Efficiency Calculator

Tools

A calculator designed to compute the power-added efficiency (PAE) of an amplifier

Special Diodes

Worksheets - Electromechanical

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

Meter Check of a Diode

Textbook

The Functionality of Diode Polarity Being able to determine the…

Vol V. Credits

Textbook

All entries arranged in alphabetical order of surname. Major…

Voltage Regulation

Textbook

As we saw in a few SPICE analyses earlier in this chapter, the output…

Capacitors and Calculus

Textbook

Capacitors do not have a stable “resistance” as conductors…

Simple Combination Lock

Textbook

PARTS AND MATERIALS 4001 quad NOR gate (Radio Shack catalog #…

Millman’s Theorem Revisited

Textbook

You may have wondered where we got that strange equation for the…

Wound Rotor Induction Motors

Textbook

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

DC Motor Theory

Worksheets - Electromechanical

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

The DIAC

Textbook

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

Thyristor Application Circuits

Worksheets - Electromechanical

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

Precise Diode Circuits

Worksheets - Electromechanical

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

Introduction to Network Theorems

Textbook

Anyone who’s studied geometry should be familiar with the…

A 50-Ohm Cable?

Textbook

Early in my explorations of electricity, I came across a length of…

Inductor Transient Response

Textbook

Inductors have the exact opposite characteristics of capacitors.…

Thevenin’s Theorem

Textbook

Thevenin’s Theorem states that it is possible to simplify any…

Introduction to Bipolar Junction Transistors (BJT)

Textbook

The invention of the bipolar transistor in 1948 ushered in a…

Nonlinear Conduction

Textbook

“Advances are made by answering questions. Discoveries are made…

Circuit Simplification Examples

Textbook

Let’s begin with a semiconductor gate circuit in need of…

Practical Considerations - Inductors

Textbook

Inductors, like all electrical components, have limitations which must…

Factoring Equivalencies

Textbook

Quantum Physics

Textbook

“I think it is safe to say that no one understands quantum…

Wavelength (TEM) Calculator

Tools

This calculator determines the wavelength of a signal given the frequency and dielectric constant.

Contact “Bounce”

Textbook

When a switch is actuated and contacts touch one another under the…

Differential Equations

Textbook

As opposed to normal equations where the solution is a number, a…

Stepper Motors

Worksheets - Electromechanical

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

DC Branch Current Analysis

Worksheets - Electromechanical

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

Boolean Arithmetic

Textbook

Let us begin our exploration of Boolean algebra by adding numbers…

JFET Amplifiers

Worksheets - Electromechanical

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

Complex Vector Addition

Textbook

If vectors with uncommon angles are added, their magnitudes (lengths)…

Simple Op-Amp

Textbook

PARTS AND MATERIALS Two 6-volt batteries Four NPN…

Open-Loop OpAmp Circuits

Worksheets - Electromechanical

Determine what the magnitude and polarity of the voltmeter’s…

Time-delay Relays

Textbook

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

Enhancement-type IGFETs

Textbook

Thermoelectricity

Textbook

PARTS AND MATERIALS Length of bare (uninsulated) copper wire Length…