Categories

Linear Computational Circuitry

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

Latch Circuits

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

CMOS Logic Gates

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

Time-Delay Electromechanical Relays

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

Series and Parallel AC Circuits

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

Contact “Normal” State and Make/Break Sequence

Textbook

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

The S-R Latch

Textbook

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

What is Alternating Current (AC)?

Textbook

Most students of electricity begin their study with what is known as…

Inductor Commutating Circuits

Textbook

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

Motor Control Circuits

Textbook

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

Transformer—Power Supply

Textbook

PARTS AND MATERIALS Power transformer, 120VAC step-down to 12VAC,…

Basic Electromagnetic Relays

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

Relay Construction

Textbook

Electricity and Magnetism An electric current through a conductor will…

Resonance

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

The Bipolar Junction Transistor (BJT) as a Switch

Textbook

Bipolar junction transistors (Also known as BJTs) can be used as an…

Electromechanical Relay Logic

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In ladder logic symbolism, an electromechanical relay coil is shown as…

Full-wave Center-tap Rectifier

Textbook

PARTS AND MATERIALS Low-voltage AC power supply (6-volt output) Two…

Monostable Multivibrators

Textbook

We’ve already seen one example of a monostable multivibrator in…

Circuit With a Switch

Textbook

PARTS AND MATERIALS 6-volt battery Low-voltage incandescent lamp…

The J-K Flip-Flop

Textbook

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

Single-phase Induction Motors

Textbook

A three-phase motor may be run from a single-phase power source.…

Fuses

Textbook

Normally, the ampacity rating of a conductor is a circuit design…

Stepper Motor Calculator

Tools

A tool designed to calculate the maximum speed, minimum time per step and maximum power of a stepper motor

Electromagnetism

Textbook

The discovery of the relationship between magnetism and electricity…

Stepper Motors

Textbook

Stepper Motor vs Servo Motor A stepper motor is a…

Winding Configurations

Textbook

Transformers with Multiple Secondaries Transformers are very versatile…

Special-output Gates

Textbook

Complementary Output Gates It is sometimes desirable to have a logic…

Time-Delay Electromechanical Relays

Worksheets - Switches

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

Time-delay Relays

Textbook

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

Miscellaneous Diode Applications

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

Build a Transformer

Textbook

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

CMOS 555 Long Duration Flyback LED Flasher

Textbook

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

Sensing AC Magnetic Fields

Textbook

PARTS AND MATERIALS Audio detector with headphones Electromagnet coil…

Other Specialized Motors

Textbook

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

Light-Pulse Switch

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

Transformer—Power Supply

Textbook

PARTS AND MATERIALS Power transformer, 120VAC step-down to 12VAC,…

Simple Combination Lock

Textbook

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

Flyback Switch Mode Regulator Calculator

Tools

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

Step-up and Step-down Transformers

Textbook

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

Potentiometer as a Rheostat

Textbook

Learning Objectives Rheostat use Wiring a potentiometer as a rheostat…

Clamper Circuits

Textbook

The circuits in the figure below are known as clampers or DC…

Relay Construction

Textbook

Electricity and Magnetism An electric current through a conductor will…

Wire-by-Number project kit introduction

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Wire-by-Number project: simple voltage divider Description: Build a…

Waveform Analysis

Textbook

PARTS AND MATERIALS IBM-compatible personal computer with sound card,…

Inverting and Noninverting OpAmp Voltage Amplifier Circuits

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

The Exclusive-OR Function: The XOR Gate

Textbook

What Is an XOR Gate? One element conspicuously missing from the set of…

Wire Self Inductance Calculator

Tools

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

Read-Only Memory (ROM)

Textbook

Read-only memory (ROM) is similar in design to static or dynamic RAM…

Mesh Current Method and Analysis

Textbook

The Mesh-Current Method, also known as the Loop Current Method, is…

Current Divider

Textbook

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

Hysteresis

Textbook

Thyristors are a class of semiconductor components exhibiting…

Contactors

Textbook

All About Contactors When a relay is used to switch a large amount of…

Safety Grounding

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In simple AC power systems, one of the two conductors is typically…

Common Sources of Hazard

Textbook

Of course, there is a danger of electrical shock when directly…

Passive Integrator and Differentiator Circuits

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∫f(x) dx Calculus alert! Calculus is a branch of mathematics that…

Circuit Wiring

Textbook

So far, we’ve been analyzing single-battery, single-resistor…

Electron Versus Conventional Flow

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In this electrical circuit, trace the direction of current through the…

Tachogenerators

Textbook

An electromechanical generator is a device capable of producing…

Calculating Power Factor

Textbook

As was mentioned before, the angle of this “power…

Meter Check of a Diode

Textbook

The Functionality of Diode Polarity Being able to determine the…