All About Circuits

Latest Electromechanical Education

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Relay Construction

Relay Construction

Electricity and Magnetism An electric current through a conductor will…


Textbook

AC Motor Theory

AC Motor Theory

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


Worksheets - Electromechanical

Switches, Process Actuated

Switches, Process Actuated

It is very important to keep in mind that the “normal”…


Textbook

Insulated Gate Bipolar Transistors

Insulated Gate Bipolar Transistors

What is an Insulated Gate Bipolar Transistor (IGBT), and what…


Worksheets - Electromechanical

Linear Computational Circuitry

Linear Computational Circuitry

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


Worksheets - Electromechanical

“Ladder” Diagrams

“Ladder” Diagrams

Ladder diagrams are specialized schematics commonly used to document…


Textbook

Bipolar Junction Transistors as Switches

Bipolar Junction Transistors as Switches

Solid-state switching circuits usually keep their constituent…


Worksheets - Electromechanical

Fail-safe Design

Fail-safe Design

Logic circuits, whether comprised of electromechanical relays or…


Textbook

Thyristor Application Circuits

Thyristor Application Circuits

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


Worksheets - Electromechanical

Lorentz Force Calculator

Lorentz Force Calculator

This calculator will determine the combined Lorentz force exerted on a charged particle moving through both an electric field and a magnetic field.


Tools

AC Lab - Large Induction Motor

AC Lab - Large Induction Motor

In this hands-on AC electronics experiment, build a large AC permanent capacitor split-phase induction motor and learn the principles of AC induction motor function.


Textbook

Inductor Commutating Circuits

Inductor Commutating Circuits

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


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Stepper Motors

Stepper Motors

Stepper Motor vs Servo Motor A stepper motor is a…


Textbook

AC Lab - Induction Motor

AC Lab - Induction Motor

In this hands-on AC electronics experiment, build a simple AC permanent capacitor split-phase induction motor and learn the principles of AC induction motor function.


Textbook

DC Lab - Potentiometer as a Rheostat

DC Lab - Potentiometer as a Rheostat

In this hands-on electronics experiment, you will use a potentiometer as a variable resistor to control the speed of a motor and learn how to connect a potentiometer as a rheostat.


Textbook

Si Lab - Commutating Diode

Si Lab - Commutating Diode

In this hands-on semiconductor electronics experiment, build a simple circuit that will teach you how to use a commutating diode to reduce inductive kickback.


Textbook

Likely Failures in Unproven Systems

Likely Failures in Unproven Systems

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


Textbook

Synchronous Motors

Synchronous Motors

Single Phase Synchronous Motors Single-phase synchronous motors are…


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Wound Rotor Induction Motors

Wound Rotor Induction Motors

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


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Electromagnetism

Electromagnetism

The discovery of the relationship between magnetism and electricity…


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Active Filters

Active Filters

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


Worksheets - Electromechanical

Oscillator Circuits

Oscillator Circuits

Phase shift oscillator. R1C1, R2C2, and R3C3 each provide 60° of…


Textbook

AC Negative Feedback OpAmp Circuits

AC Negative Feedback OpAmp Circuits

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


Worksheets - Electromechanical

Thyristor Application Circuits

Thyristor Application Circuits

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


Worksheets - Electromechanical

Boolean Algebraic Identities

Boolean Algebraic Identities

In mathematics, an identity is a statement true for all possible…


Textbook

Voltmeter Impact on Measured Circuit

Voltmeter Impact on Measured Circuit

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


Textbook

Connectors

Connectors

An electrical connector, is an electro-mechanical device used to join…


Textbook

L-Match Impedance Matching Circuits

L-Match Impedance Matching Circuits

This calculator is designed to compute for the parameters needed to design a L-Match Impedance Circuit


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Linear Computational Circuitry

Linear Computational Circuitry

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


Worksheets - Electromechanical

Electrical Connections

Electrical Connections

What, exactly, is necessary to establish electrical continuity between…


Worksheets - Electromechanical

IGFET Quirks

IGFET Quirks


Textbook

Universal Shift Registers: Parallel-in, Parallel-out

Universal Shift Registers: Parallel-in, Parallel-out

The purpose of the parallel-in/ parallel-out shift register is to take…


Textbook

Permanent Magnets

Permanent Magnets

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


Textbook

Design Project: Signal Generator

Design Project: Signal Generator

Explain the principle of operation for the particular integrated…


Worksheets - Electromechanical

Analog Lab - High-impedance Voltmeter

Analog Lab - High-impedance Voltmeter

In this hands-on electronics experiment, you will build a high-impedance voltmeter and learn about circuit loading and how to use op amps to reduce loading effects.


Textbook

Waveguide Calculator (Rectangular)

Waveguide Calculator (Rectangular)

This tool calculates the cutoff frequency of a rectangular waveguide


Tools

Clipper Circuits

Clipper Circuits

A circuit which removes the peak of a waveform is known as a clipper.…


Textbook

Basic Logic Gates

Basic Logic Gates

Identify the type of logic gate shown in this schematic diagram, and…


Worksheets - Electromechanical

Copper Wire Ampacity Table

Copper Wire Ampacity Table

Ampacities of copper wire, in free air at 30o C: INSULATION TYPE…


Textbook

Active Versus Passive Devices

Active Versus Passive Devices

Passive Devices Components incapable of controlling current by means…


Textbook

The Thyristor

The Thyristor

A thyristor is a device that has a number of unusual characteristics.…


Textbook

Maximum Power Transfer Theorem

Maximum Power Transfer Theorem

The Maximum Power Transfer Theorem is not so much a means of analysis…


Textbook

Series LED Resistor Calculator

Series LED Resistor Calculator

This series LED resistance calculator is perfect for when you have a single LED or a number of the same color of LEDs in series and need to know which resistor you should use.


Tools

Broadside Coupled Stripline Impedance Calculator

Broadside Coupled Stripline Impedance Calculator

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


Tools

Si Lab - A Simple BJT Current Mirror Circuit

Si Lab - A Simple BJT Current Mirror Circuit

In this hands-on semiconductor electronics experiment, build a simple current mirror using matched bipolar junction transistors (BJTs) and learn about current mirror circuit limitations, the temperature dependence of BJTs, and thermal runaway.


Textbook

AC Lab - Automotive Alternator as AC Generator

AC Lab - Automotive Alternator as AC Generator

In this hands-on AC electronics experiment, you will use an automotive alternator to generate three-phase AC voltage and learn how alternators can function as both generators and motors.


Textbook

Peak Voltage Calculator

Peak Voltage Calculator

The peak voltage calculator calculates peak voltage values from the peak-to-peak voltage, RMS voltage, or average voltage.


Tools

What is Alternating Current (AC)?

What is Alternating Current (AC)?

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


Textbook

Questions relating to project management

Questions relating to project management

NAME:…


Worksheets - Electromechanical

Design Project: Power Inverter

Design Project: Power Inverter

A common topology for DC-AC power converter circuits uses a pair of…


Worksheets - Electromechanical

Series and Parallel Inductors

Series and Parallel Inductors

When inductors are connected in series, the total inductance is the…


Textbook

Mutual Inductance

Mutual Inductance

If two coils of wire are brought into close proximity with each other…


Textbook

Rules for Derivatives

Rules for Derivatives

Constant rule Rule of sums Rule of differences Product rule Quotient…


Textbook

Digital Logic With Feedback

Digital Logic With Feedback

With simple gate and combinational logic circuits, there is a definite…


Textbook

The Pentode

The Pentode

Another strategy for addressing the problem of secondary electrons…


Textbook

Binary Math

Binary Math

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


Worksheets - Electromechanical

Capacitors and Calculus

Capacitors and Calculus

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


Textbook

Power Supply Circuits

Power Supply Circuits

There are three major kinds of power supplies: unregulated (also…


Textbook

Capacitor Types

Capacitor Types

A capacitor is a passive two-terminal electronic component that…


Textbook

555 Timer Astable Oscillator Circuit

555 Timer Astable Oscillator Circuit

In an astable circuit, the output voltage alternates between VCC and 0 volts on a continuous basis. This calculator will help you design an oscillator using a 555 timer IC.


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