In this article we will learn how to build a simple 3 watt amplifier circuit which can be powered directly from a computer 5V USB port for driving an 8 ohm 3 watt speaker. You can build a couple of such circuits and use them for creating a stereo output into a pair of 8 […]
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120 Watt Amplifier Circuit using TDA 2030 IC
An impressive 120 watt amplifier circuit can be built by cascading a couple of TDA 2030 IC in a bridged tied load (BTL) configuration and through a few current boosting transistors. Advantage of a BTL Amplifier Topology The main objective of a BTL configuration is to enable a two way operation of the load which […]
Simple 150 Watt Amplifier using Transistors
In this post we learn how to make a simple 150 watt power amplifier circuit using a typical OCL design which ensures cheap layout and use of minimum components, with high reliability. Introduction Referring to the figure a perfectly symmetrical OCL based amplifier can be seen , using discrete components suitable for all electronic enthusiasts […]
OCL Amplifier Explained
In the field of audio amplifiers OCL stands for Output Capacitor-Less Amplifier design. How it Works In this OCL type of amplifier topology or configuration, the power output stage is directly coupled to its preceding driver stage without coupling capacitors. The following figure shows a typical OCL amplifier output stage, as can be seen, the […]
Build this Balanced Microphone Preamplifier
In this post we learn about a simple Hi-Fi balanced microphone preamplifier circuit and also evaluate the calculations, specifications of the design through formulas. What is a Balanced Preamplifier A “balanced” amplifier or differential amplifier possesses not one but two distinct inputs and only the difference amongst these inputs is actually amplified. To elucidate just […]
60 Watt Stereo Amplifier using Gainclone Concept
The explained gainclone 60 watt stereo amplifier circuit is capable of producing an excellent sound quality, using a single IC LM3875. The IC is manufactured by Texas Instruments and can be expected to produce a good 60 watts of power output on a 8 Ohm speaker. General Features of the LM3875 The general features of […]
Simple 50 Watt Power Amplifier
A simple 50 watt amplifier circuit is explained below, let’s learn how to build it at home using this versatile single amplifier chip LM3876T By: Dhrubajyoti Biswas Analyzing the Circuit A good power amplifier is a necessity, especially when it comes to listening music. An amplifier added to a sound system will definitely enrich the […]
Simple 20 watt Amplifier
This article is written with an intent to build a simple 20 Watt Amplifier By: Dhrubajyoti Biswas Why a Single Ended Class-A Amplifier A single-ended Class-A amplifier is probably one of the best example when it comes to solid-state single-ended output. On the other hand, the passive load can be a transformer, resistor or an […]
32 watt Amplifier using TDA2050
The post explains how to build a simple yet powerful 32 watt amplifier circuit using a single chip TDA2050 and with a handful of resistors and capacitors. By: Dhrubajyoti Biswas Working Principle of TDA2050V This article will detail building a stereo amplifier along with an output for a headphone jack. It is built by using […]
Single Mosfet Class A Power Amplifier
The post discusses a simple, cheap single mosfet class A power amplifier circuit which can be used for any small scale audio amplifier application. By: Dhrubajyoti Biswas Zero Negative Feedback Amplifier This following data will detail how to build an amplifier having zero negative feedback which implies building a zero component amplifier. The amplifier will […]
6 watt Audio Amplifier Using TDA1011
A very simple yet useful 6 watt audio amplifier circuit using IC TDA1011 is explained in the following article, which can be built by new hobbyist and used for amplifying music from different sources such as cellphones, FM radios, doorbell etc. By:Dhrubajyoti Biswas. A monolithic integrated audio amplifier circuit TDA1011 is especially used for recording […]
How to Build a Microphone Amplifier
In this article we are going to see how to build a microphone amplifier circuit with operational amplifier LM324. This circuit can be used as good pre-amplifier for audio projects. By: Girish Radhakrishnan Selecting an Opamp The heart of the mic amplifier circuit is an op-amp LM324 which is quad op-amp moulded in single IC. […]
Making this Small Pre-Amplifier
The post explains a simple pre-amplifier circuit which can be quickly made using a couple of transistors (BJTs) and a few resistors. The idea was requested by Mr. Raveesh. Technical Specifications I am working in LIC of India and electronics is my hobby since so many years. Often I will be browsing your website and […]