Categories

Switch Contact Design

Textbook

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

Transistor as a Switch

Textbook

PARTS AND MATERIALS Two 6-volt batteries One NPN…

The TRIAC

Textbook

SCRs are unidirectional (one-way) current devices, making them useful…

AC Motor Theory

Worksheets - Electromechanical

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

Inductive Reactance

Worksheets - Electromechanical

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

Reluctance Motor

Textbook

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

Inductor Commutating Circuits

Textbook

A popular use of diodes is for the mitigation of inductive…

The Silicon-Controlled Switch (SCS)

Textbook

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

Impedance Matching With Transformers

Worksheets - Electromechanical

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

Stepper Motors

Textbook

Stepper Motor vs Servo Motor A stepper motor is a…

Flyback Switch Mode Regulator Calculator

Tools

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

Light-Pulse Switch

Worksheets - Electromechanical

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

Flip-Flop Circuits

Worksheets - Electromechanical

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

Three-phase Transformer Circuits

Textbook

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

Polyphase Motor Design

Textbook

AC Motors Perhaps the most important benefit of polyphase AC power…

Switches

Worksheets - Electromechanical

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

Build a Transformer

Textbook

PARTS AND MATERIALS Steel flat bar, 4 pieces Miscellaneous bolts,…

CMOS Logic Gates

Worksheets - Electromechanical

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

DC Generator Theory

Worksheets - Electromechanical

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

Vacuum Tube Audio Amplifier

Textbook

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

Time-delay Relays

Textbook

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

Parallel Wire Inductance Calculator

Tools

This tool is designed to calculate the inductance of two parallel wires

Impedance

Worksheets - Electromechanical

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

Semiconductor Devices in SPICE

Textbook

The SPICE (Simulation Program, Integrated Circuit Emphesis)…

Half-Adder

Textbook

As a first example of useful combinational logic, let’s build a…

Positive Feedback

Textbook

As we’ve seen, negative feedback is an incredibly useful…

NOR Gate S-R Latch

Textbook

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

Magnetic Fields and Inductance

Textbook

Whenever electrons flow through a conductor, a magnetic field will…

Capacitance Calculator

Tools

This calculates the capacitance of a capacitor based on its charge, Q, and its voltage, V, according to the formula, C=Q/V.

The R/2R DAC (Digital-to-Analog Converter)

Textbook

The R/2R DAC circuit is an alternative to the binary-weighted-input…

CMOS 555 Long Duration Minimum Parts Red LED Flasher

Textbook

PARTS AND MATERIALS Two AAA Batteries Battery Clip (Radio Shack…

Time Constant Calculations

Worksheets - Electromechanical

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

Resistors Types

Textbook

These are the most common types of resistors available. Resistors…

Series R, L, and C

Textbook

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

Synchronous Condenser

Textbook

Synchronous motors load the power line with a leading power factor.…

Resistance

Textbook

The circuit in the previous section is not a very practical one. In…

Voltage Divider Circuits

Textbook

Let’s analyze a simple series circuit and determine the voltage…

Electromagnetic Induction Experiment

Textbook

PARTS AND MATERIALS Electromagnet from previous experiment Permanent…

Algebraic Equation Manipulation for Electric Circuits

Worksheets - Electromechanical

The electrical resistance of a conductor at any temperature may be…

555 Audio Oscillator

Textbook

PARTS AND MATERIALS Two 6 volt batteries One capacitor, 0.1 µF,…

Magnetic Units of Measurement

Textbook

If the burden of two systems of measurement for common quantities…

Design Project: Audio Power Amplifier

Worksheets - Electromechanical

Explain how the microphone in your amplifier works. How, exactly, does…

Capacitance

Worksheets - Electromechanical

Write an equation describing the precise mathematical relationship…

Critical Temperatures for Superconductors

Textbook

Critical temperatures given in Kelvins Material Element/Alloy Critical…

Component Failure Analysis

Textbook

The job of a technician frequently entails…

Boolean Algebraic Properties

Textbook

Another type of mathematical identity, called a “property”…

Linear Computational Circuitry

Worksheets - Electromechanical

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

Resistors

Textbook

Because the relationship between voltage, current, and resistance in…

Negative Feedback

Textbook

If we connect the output of an op-amp to its inverting input and apply…

pH Measurement

Textbook

A very important measurement in many liquid chemical processes…

Contributors (14)

Textbook

Contributors to this chapter are listed in chronological order of…

Permanent Magnets

Textbook

Centuries ago, it was discovered that certain types of mineral rock…

R, L and C Summary

Textbook

With the notable exception of calculations for power (P), all AC…

The P-N Junction

Textbook

If a block of P-type semiconductor is placed in contact with a block…

Physiological Effects of Electricity

Textbook

Most of us have experienced some form of electric “shock,”…

Broadside Coupled Stripline Impedance Calculator

Tools

This calculator helps you compute the characteristic impedance of a broadside coupled stripline.

Resistors Types

Textbook

These are the most common types of resistors available. Resistors…

Superconducting Devices

Textbook

Superconducting devices, though not widely used, have some unique…

555 Hysteretic Oscillator

Textbook

PARTS AND MATERIALS One 9V Battery Battery Clip (Radio Shack catalog #…

Design Project: Sensitive Microphone Amplifier

Worksheets - Electromechanical

Identify which direction each potentiometer wiper must move in this…