Categories

BJT Amplifier Troubleshooting

Worksheets - Audio

As an instructor of electronics, I am called upon frequently to help…

Mixed-Frequency Signals

Worksheets - Audio

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

Resonance

Worksheets - Audio

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

Vacuum Tube Audio Amplifier

Textbook

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

Sound Cancellation

Textbook

PARTS AND MATERIALS Low-voltage AC power supply Two audio speakers…

Wire-by-Number project kit introduction

Worksheets - Audio

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

Phase-Locked Loops

Worksheets - Audio

This is a schematic for a simple VCO: The oscillator is of the RC…

Design Project: Audio Media-Based Signal Generator

Worksheets - Audio

Identify some different ways you can create the sine-wave audio tracks…

Op-Amp Practical Considerations

Textbook

Real operational amplifiers have some imperfections compared to an…

Decibel Measurements

Worksheets - Audio

During the early development of telephone technology, a unit was…

Multi-Stage Transistor Amplifiers

Worksheets - Audio

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

Absolute dB scales

Textbook

Decibel as Absolute Unit of Power It is also possible to use the…

Sensitive Audio Detector

Textbook

PARTS AND MATERIALS High-quality “closed-cup” audio…

Tubes versus Semiconductors

Textbook

Devoting a whole chapter in a modern electronics text to the design…

Design Project: Audio Tone Control

Worksheets - Audio

Suppose you were installing a high-power stereo system in your car,…

Decibels

Textbook

The Bel is Used to Represent Gain In its simplest form, an…

Series and Parallel AC Circuits

Worksheets - Audio

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

Practical Considerations - Transformers

Textbook

Power Capacity As has already been observed, transformers must be well…

Fundamentals of Radio Communication

Worksheets - Audio

What does the acronym RF stand form, in reference to radio-related…

AC Network Analysis

Worksheets - Audio

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

PN Junctions

Worksheets - Audio

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

Time-Delay Electromechanical Relays

Worksheets - Audio

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

AC phase

Worksheets - Audio

If we were to express the series-connected DC voltages as phasors…

The Shockley Diode

Textbook

Our exploration of thyristors begins with a device called the…

Design Project: Logic Probe

Worksheets - Audio

What factors determine where potentiometers Rpot1 and Rpot2 must be…

Copper Wire Gauge Table

Textbook

Solid Cooper Wire Table Size Diameter (inches) Cross-sectional area…

High-pass Filters

Textbook

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

Transistors, Hybrid

Textbook

In essence, the IGFET controls the base current of a BJT, which…

Potentiometer as a Voltage Divider

Textbook

PARTS AND MATERIALS Two 6-volt batteries Carbon pencil…

Complex Vector Addition

Textbook

If vectors with uncommon angles are added, their magnitudes (lengths)…

The J-K Flip-Flop

Textbook

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

Finite-state Machine

Textbook

Feedback is a fascinating engineering principle. It can turn a rather…

Parallel Circuit Rules

Textbook

Voltage Components in a parallel circuit share the same voltage:…

Peak, Average, and RMS Measurements

Worksheets - Audio

How is it possible to assign a fixed value of voltage or current (such…

Resistors

Textbook

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

Digital Communication

Worksheets - Audio

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

Bipolar Junction Transistors in Active Mode

Worksheets - Audio

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

Coil Inductance Calculator

Tools

This calculator computes the inductance of a wire coil.

Inductance, Reactance, and Admittance Calculator

Tools

This calculator gives the reactance and admittance of an inductor or the inductance given the reactance of an inductor

Musical Keyboard as a Signal Generator

Textbook

PARTS AND MATERIALS Electronic “keyboard” (musical)…

Radio Circuits

Textbook

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

Series and Parallel Component Equivalent Values

Textbook

Series and Parallel Resistances     Series and Parallel…

Rectifier Circuits

Worksheets - Audio

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

Digital Ramp ADC

Textbook

Also known as the stairstep-ramp, or simply counter A/D converter,…

Clipper Circuits

Textbook

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

Series Resistor-Inductor Circuits

Textbook

In the previous section, we explored what would happen in simple…

Passive Integrator and Differentiator Circuits

Worksheets - Audio

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

Friis Transmission Calculator

Tools

This calculator computes the power received by an antenna using Friis formula

Node Voltage Method

Textbook

The node voltage method of analysis solves for unknown voltages at…

Semiconductor Manufacturing Techniques

Textbook

The manufacture of only silicon based semiconductors is described…

DC Motor Theory

Worksheets - Audio

If the ends of a wire loop are attached to two half-circular metal…

Switches

Worksheets - Audio

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

AC Commutator Motors

Textbook

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

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.

Electromagnetism Experiment

Textbook

PARTS AND MATERIALS 6-volt battery Magnetic compass Small permanent…

Special-purpose Diodes

Textbook

Schottky diodes Schottky diodes are constructed of a metal-to-N…

Four-Channel Audio Mixer

Worksheets - Audio

A very common misconception students have about potentiometers is the…

SPICE Models

Textbook

The SPICE circuit simulation program provides for modeling diodes in…

Open-Loop OpAmp Circuits

Worksheets - Audio

Determine what the magnitude and polarity of the voltmeter’s…

Numbers and Symbols

Textbook

The expression of numerical quantities is something we tend to take…