All About Circuits

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Active Loads in Amplifier Circuits

Active Loads in Amplifier Circuits

We know that the current in a series circuit may be calculated with…


Worksheets - Linear Regulator

Special Diodes

Special Diodes

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


Worksheets - Linear Regulator

Magnetic Fields and Inductance

Magnetic Fields and Inductance

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


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The NOT Gate

The NOT Gate

The single-transistor inverter circuit illustrated earlier is actually…


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Stepper Motors

Stepper Motors

Stepper Motor vs Servo Motor A stepper motor is a…


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High Voltage Ohmmeters

High Voltage Ohmmeters

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


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Inverting and Noninverting OpAmp Voltage Amplifier Circuits

Inverting and Noninverting OpAmp Voltage Amplifier Circuits

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


Worksheets - Linear Regulator

Basic Troubleshooting Strategies

Basic Troubleshooting Strategies

A chandelier has five light bulbs in it, and one of them is not…


Worksheets - Linear Regulator

Junction Field-effect Transistors

Junction Field-effect Transistors

The field effect transistor was proposed by Julius Lilienfeld in US…


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Standing Waves and Resonance

Standing Waves and Resonance

Whenever there is a mismatch of impedance between transmission line…


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Intro Lab - How to Use a Voltmeter to Measure Voltage

Intro Lab - How to Use a Voltmeter to Measure Voltage

In this hands-on introduction to electronics, you will experiment with a multimeter and learn how to measure voltage using the voltmeter function.


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Zener Diodes

Zener Diodes

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


Worksheets - Linear Regulator

Voltage Divider Circuits

Voltage Divider Circuits

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


Worksheets - Linear Regulator

Parallel DC Circuits Practice Worksheet With Answers

Parallel DC Circuits Practice Worksheet With Answers

In this circuit, three resistors receive the same amount of voltage…


Worksheets - Linear Regulator

Negative Feedback OpAmp Circuits

Negative Feedback OpAmp Circuits

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


Worksheets - Linear Regulator

Introduction to Bipolar Junction Transistors (BJT)

Introduction to Bipolar Junction Transistors (BJT)

The invention of the bipolar transistor in 1948 ushered in a…


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Ionization (gas-filled) Tubes

Ionization (gas-filled) Tubes

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


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Capacitors and Calculus

Capacitors and Calculus

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


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Safe Meter Usage

Safe Meter Usage

Using an electrical meter safely and efficiently is perhaps the most…


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Class A BJT Amplifiers

Class A BJT Amplifiers

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


Worksheets - Linear Regulator

Basic Ammeter Use

Basic Ammeter Use

Show how this ammeter would be connected to the light bulb circuit to…


Worksheets - Linear Regulator

How to Use Thevenin’s Theorem

How to Use Thevenin’s Theorem

This page will walk you step-by-step through the process of…


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Basic Logic Gate Troubleshooting

Basic Logic Gate Troubleshooting

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


Worksheets - Linear Regulator

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…


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Millman’s Theorem

Millman’s Theorem

In Millman’s Theorem, the circuit is re-drawn as a parallel…


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Electron Versus Conventional Flow

Electron Versus Conventional Flow

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


Worksheets - Linear Regulator

Protective Relay Circuits

Protective Relay Circuits

Protective relays are special power-sensing devices whose job it is to…


Worksheets - Linear Regulator

Conventional Versus Electron Flow

Conventional Versus Electron Flow

“The nice thing about standards is that there are so many of…


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Ohmmeter Design

Ohmmeter Design

Though mechanical ohmmeter (resistance meter) designs are rarely used…


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What is a Filter?

What is a Filter?

It is sometimes desirable to have circuits capable of selectively…


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Tachogenerators

Tachogenerators

An electromechanical generator is a device capable of producing…


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How to Calculate Power in a Series and Parallel Circuit

How to Calculate Power in a Series and Parallel Circuit

When calculating the power dissipation of resistive components, we can…


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Differential Transistor Amplifiers

Differential Transistor Amplifiers

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


Worksheets - Linear Regulator

Parallel Resistor Calculator

Parallel Resistor Calculator

Calculate the equivalent resistance of up to six resistors in parallel with ease while learning how to calculate resistance in parallel and the parallel resistance formula.


Tools

Battery Ratings

Battery Ratings

Because batteries create current flow in a circuit by exchanging…


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Winding Configurations

Winding Configurations

Transformers with Multiple Secondaries Transformers are very versatile…


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Shock Current Path

Shock Current Path

As we’ve already learned, electricity requires a complete path…


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Switched Capacitor Circuitry

Switched Capacitor Circuitry

Write an equation describing the precise mathematical relationship…


Worksheets - Linear Regulator

Inductor Voltage and Current Relationship

Inductor Voltage and Current Relationship

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


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High Voltage Ohmmeters

High Voltage Ohmmeters

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


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Bit Grouping

Bit Grouping

The singular reason for learning and using the binary numeration…


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Rules for Derivatives

Rules for Derivatives

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


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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.


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Basic Electromagnetic Relays

Basic Electromagnetic Relays

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


Worksheets - Linear Regulator

High-pass Filters

High-pass Filters

A high-pass filter’s task is just the opposite of a low-pass…


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Converting Truth Tables into Boolean Expressions

Converting Truth Tables into Boolean Expressions

In designing digital circuits, the designer often begins with a truth…


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Venn Diagrams and Sets

Venn Diagrams and Sets

Mathematicians use Venn diagrams to show the logical relationships of…


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Ohm’s Law

Ohm’s Law

For a given amount of water pressure, which will flow a greater rate…


Worksheets - Linear Regulator

DC Lab - Potentiometric Voltmeter

DC Lab - Potentiometric Voltmeter

In this hands-on electronics experiment, you will build a null-balancing potentiometric voltmeter and learn how to prevent a voltmeter from changing the voltage it is measuring.


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What is Alternating Current (AC)?

What is Alternating Current (AC)?

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


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Phasing

Phasing

Since transformers are essentially AC devices, we need to be aware of…


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Averager and Summer Circuits

Averager and Summer Circuits

If we take three equal resistors and connect one end of each to a…


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Electromagnetic Induction

Electromagnetic Induction

While Oersted’s surprising discovery of electromagnetism paved…


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Other Waveshapes

Other Waveshapes

As strange as it may seem, any repeating, non-sinusoidal waveform is…


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Peak to Peak Voltage Calculator (VP-P)

Peak to Peak Voltage Calculator (VP-P)

This calculator shows the peak-to-peak voltage (VP-P) value from the peak voltage, RMS voltage, or average voltage.


Tools

555 Lab - Blue LED Flasher With Voltage Doubler

555 Lab - Blue LED Flasher With Voltage Doubler

In this hands-on electronics experiment, build a blue LED flasher using a 555 timer and learn the basic theory of a voltage doubler using a transistor switch and a capacitor.


Textbook

Sum and Product Notation

Sum and Product Notation

For reference, this section introduces the terminology used in some…


Textbook

T-Match Impedance Matching Circuits

T-Match Impedance Matching Circuits

A tool designed to compute the values to be used in a T-match Impedance Circuit


Tools

Introduction to Solid-state Device Theory

Introduction to Solid-state Device Theory

This chapter will cover the physics behind the operation of…


Textbook

Coil Inductance Calculator

Coil Inductance Calculator

This calculator computes the inductance of a wire coil.


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