Categories

3D time-of-flight sensor theory of operation

In partnership with Texas Instruments

Explore the theory of operation behind 3D time of flight sensors.

Achieve Precise Measurement for Smoke Detector Designs

In partnership with Texas Instruments

This video provides an introduction to the internal components of typical smoke detectors.

Multi-Stage Transistor Amplifiers

Worksheets - Audio

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

Class A BJT Amplifiers

Worksheets - Audio

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

Multiplexers and Demultiplexers

Worksheets - Audio

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

Decibel Measurements

Worksheets - Audio

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

Radio Circuits

Textbook

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

Resonance

Worksheets - Audio

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

Open-Loop OpAmp Circuits

Worksheets - Audio

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

Four-Channel Audio Mixer

Worksheets - Audio

A very common misconception students have about potentiometers is the…

BJT Amplifier Troubleshooting

Worksheets - Audio

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

Impedance Matching With Transformers

Worksheets - Audio

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

Feedback

Textbook

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

Design Project: Audio Tone Control

Worksheets - Audio

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

Series and Parallel AC Circuits

Worksheets - Audio

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

What is a Filter?

Textbook

It is sometimes desirable to have circuits capable of selectively…

Absolute dB scales

Textbook

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

Op-Amp Practical Considerations

Textbook

Real operational amplifiers have some imperfections compared to an…

Biasing Techniques (BJT)

Textbook

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

AC Waveforms

Worksheets - Audio

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

Design Project: Audio Power Amplifier

Worksheets - Audio

Explain how the microphone in your amplifier works. How, exactly, does…

Oscillator Circuits

Worksheets - Audio

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

Averager and Summer Circuits

Textbook

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

Characteristic Impedance

Worksheets - Audio

Note the “50 ohm” rating printed on the jacket of the cable. What…

Atomic Structure

Worksheets - Audio

Shown here is a simplified representation of an atom: the smallest…

General Troubleshooting Tips

Textbook

When first approaching a failed or otherwise misbehaving system, the…

Contributors (14)

Textbook

Contributors to this chapter are listed in chronological order of…

High Voltage Ohmmeters

Textbook

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

Low-pass Filters

Textbook

By definition, a low-pass filter is a circuit offering easy passage to…

Voltage Follower

Textbook

PARTS AND MATERIALS One NPN transistor—models 2N2222 or 2N3403…

Transformer—Power Supply

Textbook

PARTS AND MATERIALS Power transformer, 120VAC step-down to 12VAC,…

Current Mirror BJTs

Textbook

Bipolar Junction Transistor or BJT Current Mirror An often-used…

Parallel Wire Inductance Calculator

Tools

This tool is designed to calculate the inductance of two parallel wires

Basic Voltmeter Use

Worksheets - Audio

What will this voltmeter register when connected to a battery as shown…

Digital Memory Terms and Concepts

Textbook

When we store information in some kind of circuit or device, we not…

Susceptance and Admittance

Textbook

What is Conductance? In the study of DC circuits, the student of…

Fail-safe Design

Textbook

Logic circuits, whether comprised of electromechanical relays or…

CMOS 555 Long Duration Blue LED Flasher

Textbook

PARTS AND MATERIALS Two AAA Batteries Battery Clip (Radio Shack…

Measurement Circuits

Textbook

Figure below shows a photodiode amplifier for measuring low levels of…

Elementary Circuits

Worksheets - Audio

In the simplest terms you can think of, define what an electrical…

The Unijunction Transistor (UJT)

Textbook

Unijunction transistor: Although a unijunction transistor is not a…

Contactors

Textbook

All About Contactors When a relay is used to switch a large amount of…

Switches, Electrically Actuated (Relays)

Textbook

Introduction to Solid-state Device Theory

Textbook

This chapter will cover the physics behind the operation of…

Resonance

Worksheets - Audio

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

Ammeter Design

Worksheets - Audio

What would happen to this meter movement, if connected directly to a…

The Common-base Amplifier

Textbook

The final transistor amplifier configuration (Figure below) we need to…

Practical Considerations - Batteries

Textbook

When connecting batteries together to form larger “banks”…

Network Topology

Textbook

If we want to connect two digital devices with a network, we would…

Power Measurement

Textbook

Power measurement in AC circuits can be quite a bit more complex than…

Binary Addition

Textbook

The Rules of Binary Addition Adding binary numbers is a very simple…

Coax Inductance Calculator

Tools

A calculator for computing the inductance of a coaxial cable.

Time Constant Equations

Textbook

Value of time constant in series RC and RL circuits Time constant in…

Electric Fields and Capacitance

Textbook

Introduction Whenever an electric voltage exists between two separated…

Zener Diodes

Worksheets - Audio

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

Electronics as Science

Textbook

Electronics is a science, and a very accessible science at that. With…

Convert MCD to Lumens

Tools

This calculator is useful for calculating the luminous flux for LEDs where the angle is known.

Edge-triggered Latches: Flip-Flops

Textbook

So far, we’ve studied both S-R and D latch circuits with enable…

Series Resistor-Inductor Circuits

Textbook

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

Series-Parallel DC Circuits

Worksheets - Audio

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

Peak Detector

Textbook

A peak detector is a series connection of a diode and a…

Waveform Analysis

Textbook

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