Categories

Three-phase Transformer Circuits

Textbook

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

Motor Control Circuits

Textbook

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

Vacuum Tube Audio Amplifier

Textbook

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

AC Instrumentation Transducers

Textbook

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

High Voltage Ohmmeters

Textbook

Most ohmmeters of the design shown in the previous section utilize a…

Simple Combination Lock

Textbook

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

Step-up and Step-down Transformers

Textbook

So far, we’ve observed simulations of transformers where the…

The J-K Flip-Flop

Textbook

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

DC Generator Theory

Worksheets - Motors

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

Series and Parallel AC Circuits

Worksheets - Motors

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

Step-up, Step-down, and Isolation Transformers

Worksheets - Motors

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

Switch Types

Textbook

Though it may seem strange to cover the elementary topic of electrical…

AC Motor Theory

Worksheets - Motors

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

CMOS Logic Gates

Worksheets - Motors

Counting practice: count from zero to thirty-one in binary, octal, and…

The S-R Latch

Textbook

A bistable multivibrator has two stable states, as indicated by the…

Basic Electromagnetic Relays

Worksheets - Motors

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

Voltmeter Impact on Measured Circuit

Textbook

Every meter impacts the circuit it is measuring to some extent, just…

Selsyn (Synchro) Motors

Textbook

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

Switches

Worksheets - Motors

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

Resonance

Worksheets - Motors

The Q factor of a series inductive circuit is given by the following…

Pulse Width Modulation

Textbook

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

Reluctance Motor

Textbook

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

BJT Amplifier Troubleshooting

Worksheets - Motors

As an instructor of electronics, I am called upon frequently to help…

Current Divider

Textbook

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

DC Motor Control Circuits

Worksheets - Motors

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

Component Failure Analysis (Continued)

Textbook

“I consider that I understand an equation when I can predict the…

Series R, L, and C

Textbook

Let’s take the following example circuit and analyze it:  …

Ohm’s Law

Textbook

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

Solid-state Relays

Textbook

Limitations of Electromechanical Relays As versatile as…

AC Circuit Equations

Textbook

Inductive Reactance     Capacitive Reactance    …

Component Failure Analysis

Textbook

The job of a technician frequently entails…

Ionization (gas-filled) Tubes

Textbook

So far, we’ve explored tubes which are totally…

Active-mode Operation (BJT)

Textbook

When a transistor is in the fully-off state (like an open switch), it…

Waveguide Calculator (Rectangular)

Tools

This tool calculates the cutoff frequency of a rectangular waveguide

Winding Configurations

Textbook

Transformers with Multiple Secondaries Transformers are very versatile…

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…

Pulse Width Modulation

Textbook

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

Programmable Logic Technology

Worksheets - Motors

Define the following acronyms as they apply to digital logic circuits:…

High-impedance Voltmeter

Textbook

PARTS AND MATERIALS Operational amplifier, model TL082 recommended…

Light-Pulse Switch

Worksheets - Motors

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

Wire Self Inductance Calculator

Tools

This calculator will help compute the inductance of a length of wire.

AC Negative Feedback OpAmp Circuits

Worksheets - Motors

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