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Square Wave Signals

Textbook

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

Biasing Techniques (BJT)

Textbook

In the common-emitter section of this chapter, we saw a SPICE analysis…

Class A BJT Amplifiers

Worksheets - Microphones

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

Design Project: Sensitive Microphone Amplifier

Worksheets - Microphones

Identify which direction each potentiometer wiper must move in this…

Sensitive Voltage Detector

Textbook

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

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.

Waveform Analysis

Textbook

PARTS AND MATERIALS IBM-compatible personal computer with sound card,…

Impedance Matching With Transformers

Worksheets - Microphones

Suppose you were to take a 3 kW electric heater rated for 240 VAC and…

AC Waveforms

Worksheets - Microphones

Radio waves are comprised of oscillating electric and magnetic fields,…

What is a Filter?

Textbook

It is sometimes desirable to have circuits capable of selectively…

BJT Quirks

Textbook

An ideal transistor would show 0% distortion in amplifying a signal.…

The Common-emitter Amplifier

Textbook

At the beginning of this chapter, it illustrates how transistors could…

Square Root, Cube Root, and Nth Root Calculator

Tools

This calculator will determine the square root, cube root, or nth root of a given number, x.

Vacuum Tube Audio Amplifier

Textbook

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

Resonance

Worksheets - Microphones

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

Pulsed-light Sensor

Textbook

PARTS AND MATERIALS Two 6-volt batteries One NPN…

555 Audio Oscillator

Textbook

PARTS AND MATERIALS Two 6 volt batteries One capacitor, 0.1 µF,…

Radio Circuits

Textbook

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

Op-Amp Practical Considerations

Textbook

Real operational amplifiers have some imperfections compared to an…

Multi-Stage Transistor Amplifiers

Worksheets - Microphones

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

Electrical Isolation

Textbook

SPICE analysis of Electrical Isolation Aside from the ability to…

Simple Series Resonance

Textbook

A similar effect happens in series inductive/capacitive circuits. When…

Snell’s Law Calculator

Tools

Given three of the four input parameters (refractive indices, angles of incidence, and refraction) this tool calculates the missing variable based on Snell's law.

Band Theory of Solids

Textbook

Quantum physics describes the states of electrons in an atom according…

Binary Math Circuits

Worksheets - Microphones

Add the following binary numbers:

Harmonics in Polyphase Power Systems

Textbook

In the chapter on mixed-frequency signals, we explored the concept of…

Thevenin’s Theorem

Textbook

Thevenin’s Theorem states that it is possible to simplify any…

Electromagnetism Experiment

Textbook

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

Setting Up a Home Lab

Textbook

In order to build the circuits described in this volume, you will need…

Electrical Connections

Worksheets - Microphones

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

DC Motor Theory

Worksheets - Microphones

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

Resistance

Textbook

The circuit in the previous section is not a very practical one. In…

Sensing AC Electric Fields

Textbook

PARTS AND MATERIALS Audio detector with headphones  …

555 Monostable Multivibrator

Textbook

PARTS AND MATERIALS One 9V Battery Battery Clip (Radio Shack catalog #…

Introduction to Digital-Analog Conversion

Textbook

Connecting digital circuitry to sensor devices is simple if the sensor…

Ohmmeter Usage

Textbook

Parts and Materials Multimeter, digital or analog Assorted resistors…

Maximum Power Transfer Theorem

Textbook

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

Voltage Divider Calculator

Tools

The voltage divider is a circuit used to create a voltage less than or equal to the input voltage.

A Very Simple Computer

Textbook

PARTS AND MATERIALS Three batteries, each one with a different voltage…

Making a Venn Diagram Look Like a Karnaugh Map

Textbook

Starting with circle A in a rectangular A’ universe in figure…