Categories

Time-Delay Electromechanical Relays

Worksheets - Switches

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

Fail-safe Design

Textbook

Logic circuits, whether comprised of electromechanical relays or…

CMOS 555 Long Duration Flyback LED Flasher

Textbook

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

Performance-Based Assessments for Digital Circuit Competencies

Worksheets - Switches

(Template)

Digital Logic Functions

Textbook

We can construct a simple logic functions for our hypothetical lamp…

Vacuum Tube Audio Amplifier

Textbook

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

Protective Relays

Textbook

A special type of relay is one that monitors the current, voltage,…

Transistor as a Switch

Textbook

PARTS AND MATERIALS Two 6-volt batteries One NPN…

Permissive and Interlock Circuits

Textbook

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

Inductor Commutating Circuits

Textbook

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

Bipolar Junction Transistors as Switches

Worksheets - Switches

Solid-state switching circuits usually keep their constituent…

The Silicon-Controlled Switch (SCS)

Textbook

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

Contactors

Textbook

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

Likely Failures in Unproven Systems

Textbook

“All men are liable to error;” —John Locke Whereas…

The Junction Field-effect Transistor (JFET) as a Switch

Textbook

Like its bipolar cousin, the field-effect transistor may be used as an…

TTL Logic Gates

Worksheets - Switches

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

Latch Circuits

Worksheets - Switches

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

Relay Construction

Textbook

Electricity and Magnetism An electric current through a conductor will…

The Bipolar Junction Transistor (BJT) as a Switch

Textbook

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

Electromechanical Relay Logic

Worksheets - Switches

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

Performance-Based Assessments for Digital Circuit Competencies

Worksheets - Switches

(Template)

Bipolar Junction Transistors as Switches

Worksheets - Switches

Solid-state switching circuits usually keep their constituent…

AC Instrumentation Transducers

Textbook

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

Resonance

Worksheets - Switches

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

AC Motor Theory

Worksheets - Switches

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

Potentiometer as a Rheostat

Textbook

Learning Objectives Rheostat use Wiring a potentiometer as a rheostat…

Commutating Diode

Textbook

PARTS AND MATERIALS 6 volt battery Power transformer, 120VAC step-down…

Synchronous Condenser

Textbook

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

Motor Control Circuits

Textbook

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

Circuit With a Switch

Textbook

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

The Junction Field-effect Transistor (JFET) as a Switch

Textbook

Like its bipolar cousin, the field-effect transistor may be used as an…

What is Alternating Current (AC)?

Textbook

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

Flyback Switch Mode Regulator Calculator

Tools

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

The S-R Latch

Textbook

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

Flip-Flop Circuits

Worksheets - Switches

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

Simple Combination Lock

Textbook

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

AC Commutator Motors

Textbook

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

Time-delay Relays

Textbook

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

Switches, Electrically Actuated (Relays)

Textbook

The structure behind ladder logic is based on the electrical ladder…

Electromechanical Relay Logic

Worksheets - Switches

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

Questions to Ask Before Proceeding

Textbook

Has the system ever worked before? If yes, has anything happened to…

Temperature Coefficient of Resistance

Textbook

You might have noticed on the table for specific resistances that all…

Karnaugh Maps, Truth Tables, and Boolean Expressions

Textbook

Who Developed the Karnaugh Map? Maurice Karnaugh, a…

Electron Activity in Chemical Reactions

Textbook

So far in our discussions on electricity and electric circuits, we…

Tesla Polyphase Induction Motors

Textbook

Most AC motors are induction motors. Induction motors are favored due…

Full-wave Bridge Rectifier

Textbook

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

Programmable Logic Controllers (PLC)

Textbook

Before the advent of solid-state logic circuits, logical control…

Encoder

Textbook

What is an Encoder? An encoder is a circuit that changes a set of…

Inverting and Noninverting OpAmp Voltage Amplifier Circuits

Worksheets - Switches

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

Finite-length Transmission Lines

Textbook

A transmission line of infinite length is an interesting abstraction,…

Tracking ADC

Textbook

A third variation on the counter-DAC-based converter theme is, in my…

Contributors (9)

Textbook

Contributors to this chapter are listed in chronological order of…

True, Reactive, and Apparent Power

Textbook

Reactive Power We know that reactive loads such as inductors and…

Antenna Downtilt and Coverage Calculator

Tools

This calculator will determine the correct antenna downtilt angle given the heights of the antennas and distance between them.

Re-drawing Complex Schematics

Textbook

Typically, complex circuits are not arranged in nice, neat, clean…

JFET Current Regulator

Textbook

PARTS AND MATERIALS One N-channel junction field-effect transistor,…

Basic Electricity Worksheet

Worksheets - Switches

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

Circuit Components

Textbook

Remember that this tutorial is not exhaustive by any means, and that…

Don’t Care Cells in the Karnaugh Map

Textbook

Up to this point we have considered logic reduction problems where…

The J-K Flip-Flop

Textbook

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