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Junction field-effect transistors (JFET)

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

Negative Feedback OpAmp Circuits

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

Semiconductor Devices in SPICE

Textbook

The SPICE (Simulation Program, Integrated Circuit Emphesis)…

Decibel Calculator

Tools

This calculator will convert voltage or power gains into decibels. Enter one of the three values and the calculator will output the other two.

Resonant Filters

Textbook

So far, the filter designs we’ve concentrated on have employed…

Transistor Biasing Calculations

Textbook

Although transistor switching circuits operate without bias, it is…

Class A BJT Amplifiers

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

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

Textbook

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

Rectifier/Filter Circuit

Textbook

PARTS AND MATERIALS Low-voltage AC power supply Bridge rectifier pack…

OpAmp Oscillator Circuits

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

Mixed-Frequency Signals

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What is a harmonic frequency? If an oscillator circuit outputs a…

Radio Circuits

Textbook

(a) Crystal radio. (b) Modulated RF at antenna. (c) Rectified RF at…

LC Resonant Frequency Calculator

Tools

A circuit with an inductor (L) and capacitor (C) connected in parallel or series will have a resonant frequency at which their impedances are equal. Given two of the three values—inductance, capacitance, or resonant frequency—this tool will calculate the missing third variable.

Circuit Components

Textbook

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

Meter Check of a Transistor (JFET)

Textbook

Testing a JFET with a multimeter might seem to be a relatively easy…

Simple Parallel (Tank Circuit) Resonance

Textbook

Resonance in a Tank Circuit A condition of resonance will be…

RC Time Constant Calculator

Tools

The time constant of a series RC circuit is the product of the resistance and capacitance. Given two of the three values—resistance, capacitance, or RC time constant—this tool will calculate the missing third variable.

Conventional Transistor Overview and Special Transistors

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A microcontroller is a specialized type of digital computer used to…

Calculus for Electric Circuits

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

Passive Filter Circuits

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In very simple, qualitative terms, rate the impedance of capacitors…

Phase Rotation

Textbook

Three-Phase Alternator Let’s take the three-phase alternator…

Positive Feedback OpAmp Circuits

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

Vectors and AC Waveforms

Textbook

OK, so how exactly can we represent AC quantities of voltage or…

Parallel Resistor Calculator

Tools

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.

Conductor Ampacity

Textbook

The smaller the cross-sectional area of any given wire, the greater…

Performance-Based Assessments for Digital Circuit Competencies

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(Template)

DIP Gate Packaging

Textbook

Digital logic gate circuits are manufactured as integrated circuits:…

Commutating Diode

Textbook

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

Introduction to Network Theorems for Circuit Analysis

Textbook

Anyone who’s studied geometry should be familiar with the…

Ohm’s Law - How Voltage, Current, and Resistance Relate

Textbook

The first, and perhaps most important, relationship between current,…

Other Waveshapes

Textbook

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

Feedback

Textbook

If some percentage of an amplifier’s output signal is connected…

Junction field-effect transistors (JFET)

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

Meter Check of a Diode

Textbook

The Functionality of Diode Polarity Being able to determine the…

Electromagnetism

Textbook

The discovery of the relationship between magnetism and electricity…

AC Negative Feedback OpAmp Circuits

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

Transistors, Bipolar

Textbook

There are not too many circuit symbols for bipolar transistors. There…

Step-up, Step-down, and Isolation Transformers

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Calculate the voltage output by the secondary winding of a transformer…

Microwave Tubes

Textbook

For extremely high-frequency applications (above 1 GHz), the…

Polar Form and Rectangular Form Notation for Complex Numbers

Textbook

In order to work with complex numbers without drawing vectors, we…

Capacitor Sizing Equation

Textbook

Capacitance Formula     Permittivity of Dielectric  …

Op-Amp Voltage and Gain Calculator

Tools

A calculator for computing the gain and output voltage of an operational amplifier

Numbers versus Numeration

Textbook

It is imperative to understand that the type of numeration system used…

Bipolar Junction Transistors in Active Mode

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

Design Project: Stepper Motor Driver

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At first it may seem pointless to have the four buffer gates following…

Safe Circuit Design

Textbook

As we saw earlier, a power system with no secure connection to earth…

Oscilloscope Trigger Controls

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A very useful tool for observing rotating objects is a strobe light.…

Special-output Gates

Textbook

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

Performance-Based Assessments for DC Circuit Competencies

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(Template)

Synchronous Motors

Textbook

Single Phase Synchronous Motors Single-phase synchronous motors are…

Special Transformers and Applications

Textbook

Impedance Matching Because transformers can step voltage and current…

Simple Parallel (Tank Circuit) Resonance

Textbook

Resonance in a Tank Circuit A condition of resonance will be…

The Exclusive-OR Function: The XOR Gate

Textbook

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

Creating Custom Calibration Resistances

Textbook

Often in the course of designing and building electrical meter…

Mutual Inductance

Textbook

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

Contributors (13)

Textbook

Contributors to this chapter are listed in chronological order of…

Square Wave Signals

Textbook

It has been found that any repeating, non-sinusoidal waveform can be…

Introduction to Mixed-Frequency AC Signals

Textbook

In our study of AC circuits thus far, we’ve explored circuits…

Basic Gate Function

Textbook

Parts and Materials 4011 quad NAND gate (Radio Shack catalog #…

Resistors

Textbook

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