Simple hifi audio class ab best audio amplifier for your. The need of this intermediate circuitry exists so that we can hear crystal clear music from the music systems. Here is a simple lm386 based audio amplifier circuit with the authors prototype shown below. We will also try to explain the working of this audio amplifier using an opamp. Audio amplifier project report free download as word doc. In this project, lets learn about a simple stereo amplifier circuit. The amplifier section is designed around operational amplifier ic lme ic 2. Designing audio power amplifiers bob cordell new york chicago san francisco lisbon london madrid mexico city milan new delhi san juan seoul singapore sydney toronto. All breadboarding and testing can and should be done in lab. A project report at cell phone detector department of electronics engineering session 201220 acknowledgement. Lm386 based audio amplifier full project with circuit. Variable resistor vr 1 is used to control the level of volume and capacitor c 4 block the dc signal. Today i will share to you simple hifi audio class ab best audio amplifier for your home pdf share.
Tda2005 is a class b dual audio power amplifier specifically designed for car radio applications. It is built around popular amplifier lm386 ic1, an 8ohm, onewatt speaker ls1, four capacitors and a few other components. Soldering and hardwiring can and should be done outside lab. We have already studied some important applications of the operational amplifier such as op amp comparator, op amp integrator in the previous articles.
Abstract of design project stereo amplifier by ben ruppel this report covers the design and implementation of a multistage stereo audio amplifier with its own voltage regulator, led display, and digital volume control for each channel. Amplifier is a basic component of all the music systems available in market. This article provides an information about how to make an audio amplifier using an opamp. The input can come directly from a cd audio player or similar device, and typical 8 ohm speakers are driven.
Audio amplifierproject report free download as word doc. Doc a project report at cell phone detector department. The lm386 ic is a low voltage audio power amplifier with a default voltage gain of 20, which can howeverbe increased to any value between 20 and 200 by simply placing an external series rc circuit between pins 1 and 8. Input audio is given to inverting terminal of ic 2 pin 2 through variable resistor vr 1 and electrolytic capacitor c 4. This simple circuit is designed using 4 class b audio amplifier ics from philips namely tda1554. The primary specifications include maximum power, frequency response, signal to noise ratio, and distortion.