In this post we study a power amplifier design configured using an ordinary IC 741 and a couple of MOSFETs. An operational amplifier’s output power such as from an IC […]
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Simple Hum Filter Circuit for Amplifiers
The following post discusses a simple hum filter circuit which can be installed between an audio input source and a power amplifier, so that any possible mains hum frequency within […]
Types of Power Amplifier Classes Explained in Simple Words
In this post we are going to explore power amplifiers and their classification according to their output electrical characters and application. We will be exploring amplifier classes: A, B, AB, […]
Build this Subwoofer Amplifier Circuit [Mini Ground-Shaker]
A subwoofer amplifier is basically a power amplifier designed to filter and extract the low frequency content from the input audio signal and amplify it to the desired levels. This […]
Dummy Load Circuit for Testing Power Supplies and Amplifiers
The following article explains two straightforward dummy load circuits: the first one can be used for testing high current power supplies, and the second design can be used for testing […]
Simple 10 Watt Amplifier Circuits using Transistors
The post comprehensively explains 3 easy to build 10 watt power amplifier circuits, which can be built using discrete parts, such as resistors, transistors, and MOSFETs. The MOSFETs used in […]
60 Watt Amplifier Circuit
The circuit of a 60 watt power amplifier is shown in the below figure. It’s design layout is simple and very conventional. It has a completely symmetrical pattern which has […]
Public Address (PA) Amplifier Circuit
A public address system (PA system) is an electronic system that includes a set of audio electronic devices such as microphones, amplifiers, loudspeakers, and other similar audio equipment. It is […]
Bench Amplifier Circuit
A bench amplifier is a small test amplifier which includes basically all the features that are required for testing the performance of an input audio signal. It can be also […]
Bridged Amplifier Circuit using LM380 Circuit
The post explains how to configure a couple of LM380 ICs in the bridged format to create an output power that’s two times more or double of a single IC […]