Circuit Basics - Electronics - Audio Amplifiers

Electronics

Build Your Own Hi-Fi Audio Amplifiers

Build a Great Sounding Audio Amplifier (with Bass Boost) from the LM386

Build a Great Sounding Audio Amplifier (with Bass Boost) from the LM386

Scott Campbell2947 min read
Find out how to build a great sounding audio amplifier (with bass boost) from the LM386 IC, and learn what makes this amplifier sound better than the rest.
How to Design a Hi-Fi Audio Amplifier With an LM3886 - Amplifier Back Panel

A Complete Guide to Design and Build a Hi-Fi LM3886 Amplifier

Scott Campbell26040 min read
See how each part of the circuit works, how to calculate the best component values, and how to layout the PCB and wire your amplifier for great sound.
iPhone headphone wires

How to Hack a Headphone Jack

Scott Campbell643 min read
This tutorial will show you how to connect a 3.5 mm audio jack from an old pair of headphones to the audio input of your DIY audio projects.
Complete TDA2050 Amplifier Design and Construction - Assembled Amp

How to Design and Build an Amplifier With the TDA2050

Scott Campbell3329 min read
Follow along as I build a 25 Watt stereo amp with the TDA2050. I’ll show you how to change the gain, set the bandwidth, find the right heat sink size, and layout the PCB and wiring inside a chassis.
How to Build an Audio Amplifier With the TDA2003 - Assembled Bridged PCB Attached to Heat Sink

A Guide for Building TDA2003 Bridged and Stereo Amplifiers

Scott Campbell2113 min read
A complete guide for building stereo and bridged audio amplifiers with the TDA2003, with tips for optimal PCB layout, grounding, and component selection.
Audio Amplifiers - LM1875 Schematic 2

Build a High Quality Audio Amplifier with the LM1875

Graham Lambert38 min read
Build an audio amplifier with excellent sound quality using the LM1875 audio amplifier chip. Step by step instructions and schematics included.
Ultimate Guide to Op-Amps - Op-Amp Internal Diagram

Ultimate Guide to Op-Amps – Part 1

Graham Lambert24 min read
Learn how operational amplifiers work, how to build an op-amp circuit, and some important parameters to consider when choosing an op-amp.
Transistor amplifier schematic

Transistor Amplifiers

Graham Lambert18 min read
Need a guide in designing your own transistor amplifier? Learn here the basics of gain, calculating gain, biasing, among others!
What are Op-Amps? - Part 3 (Non Linear Applications) - Precision

Ultimate Guide to Op-Amps – Part 3

Graham Lambert03 min read
Learn how to build non-linear op-amp circuits like a comparator, rectifier, peak detector, and constant volume amplifier. Schematics and detailed instructions included.
What are Op-Amps? - Part 2 (Linear Applications) - Summing Amplifier

Ultimate Guide to Op-Amps – Part 2

Graham Lambert05 min read
Learn how to build eight different op-amp circuits, including an inverting and non-inverting amplifier, voltage follower, differential amplifier, integrator, differentiator, and summing amplifier.