Amplifier Circuit - Page 2 of 3 - Engineering Projects

10 Watt Audio Amplifier Circuit with Volume Control

October 16, 2018 Engineeering Projects

An amplifier that only amplify audio frequency range (typically 20Hz to 20K Hz) and attenuates all other range frequency range is called an audio amplifier. So, here in this post you will learn about power amplifier IC and at last we will design a 10-Watt Audio Amplifier Circuit with Volume Control using power amplifier IC with the features of volume control. We had already posted various amplifier circuit you may like. 7-Watt Audio Amplifier using TBA810 10-Watt Audio Amplifier using Transistor 20-Watt Audio Amplifier using TDA2020 20-Watt Audio Amplifier using…

Audio Signal Tracer Schematic

November 23, 2017January 28, 2022 Engineeering Projects

Signal transmission can be quite troublesome sometimes. To ensure that the signal is passed through a defined distance, here we have presented an “Audio Signal Tracer Schematic”. As mentioned in the title; ‘Audio Signal Tracer Schematic’, this project is implemented to troubleshoot audio signals transmission in electronic circuits and radio, etc. It comprises two loudspeakers being Audio Signal Tracer and is packaged into a small hand-held test probe. The only power source required by the circuit is a battery and thus is more useful. Amplitude-modulated signals can also be detected…

Audio Distribution Amplifier Circuit using LM324

August 11, 2017January 30, 2019 Engineeering Projects

Audio Distribution Amplifier is a circuit which transfer signal from one audio source to many output with a facility of appropriate amplification. The project published here is of Audio Distribution Amplifier Circuit using LM324 is shown in figure 1, which is basically a low cost, low noise amplifier designed using one of the most popular operational amplifier LM324. The circuit of audio distribution amplifier is combination of low noise input transistor amplifier and an op-amp in order to insure good characteristics. Circuit Description of Audio Distribution Amplifier using LM324 The circuit…

20 Watt Audio Amplifier using TDA2003

August 4, 2017October 4, 2022 Engineeering Projects

Here is a simple circuit of the “20-Watt Audio Amplifier using TDA2003″ IC to amplify the weak audio signal. Various types of amplifier circuits have already been posted in the amplifier circuit section. The IC TDA2003 contains a pre-amplifier, driver amplifier, and output amplifier internally. Basically, TDA2003 is an improved version of TDA2002 with various features like very low harmonic distortion and high output current capability. Circuit Description of 20-Watt Audio Amplifier using TDA2003 The circuit of the 20-Watt Audio Amplifier using TDA2003 shown in figure 1, build around the…

10-Watt Audio Amplifier

August 1, 2017January 7, 2022 Engineeering Projects

The Driver Amplifier amplifies the weak electrical signal from the microphone and makes it suitable for power amplification. Thus, an amplifier that is used before a power amplifier is called a driver amplifier. As all amplifier driver amplifier is also a cascade amplifier. Thus, by cascading multiple amplifier stages a project 10-Watt Audio Amplifier is built. Circuit Description of 10-Watt Audio Amplifier The project shown in figure 1 is of 10-Watt Audio Amplifier, which is basically a combination of various amplifiers i.e. pre-amplifier, driver amplifier, and a push-pull amplifier. Here…

Audio Amplifier Circuit Using 555 IC

March 28, 2017June 28, 2022 Engineeering Projects

As being electronics hobbyists we all know about timer IC 555. Timer IC 555 is one of the most popular IC of all time because of its application. This IC has various applications like clock pulse generator, time delay circuit, etc. Here, is another application of 555 timer IC i.e. Audio Amplifier using 555. We are going to use a 555 timer IC rather than a conventional amplifier IC because it has unique features like low audio distortion and high efficiency with a high base. PWM is the method by…

Listening Bug Circuit using op-amp LM386

March 17, 2017March 10, 2019 Engineeering Projects

Listening bug? What is that? Is it what strikes your head, the first time you see this title? Well, allow us to clear your confusion. Listening bug is a resemblance to that concept improves the quality of sound we hear. Input sound collected by the condenser microphone with high-sensitivity is supplied to the Listening Bug Circuit and adjustable sound gain is obtained at its output which improves the quality of sound for obvious reasons. Now, people can hear everything smoothly without risk of interruption and no talks will be missed.…

Eight Channel Audio Mixture with Multiple Control

January 24, 2017September 14, 2018 Engineeering Projects

circuit diagram of audio mixture with multiple control

Here is simple circuit of eight channel audio mixture with multiple control using IC TDA 1524A and 747 to mix eight individual sound. The PCB for soldering side and component side is also given. The conventional sound systems involved recording of sounds from several musical instruments, each played by different musicians using only a single microphone. Then, in order to balance the sound tone, they had to alter the positions of musicians according to the microphone. Due to which people started to record directly to stereo master tape. However that…

Low Power Audio Amplifier Using LM386

January 22, 2017September 14, 2018 Engineeering Projects

circuit diagram of low power audio amplifier

The circuit and PCB Design of Low Power Audio Amplifier using LM386 is posted here which used to drive at most audio power of 1 Watt. LM386 is an low voltage, battery operated power amplifier designed for application where low voltage is main concern. The main advantage of using LM386 is it does not requires any ground reference voltage and it’s output is automatically biased to 1/2 of supply voltage. Circuit Description of Low Power Audio Amplifier Using LM386 To derive at most audio power of 1 watt at the…

Electric guitar preamp circuit

October 20, 2016January 7, 2022 Engineeering Projects

author prototype of guitar pre-amplifier box

The entire circuit of the ‘Electric guitar preamp circuit’ is divided into small sections to ensure simplicity and easy understanding of the project. The first section comprises a single transistor that serves as a common-emitter amplifier. Be it in melodious songs or in rock songs, the guitar is an inseparable part of music in today’s world. To extend the level of sound such that it can be heard by every individual in a mass, amplifier circuits are extensively incorporated into the music system. And this circuit represents a similar concept.…

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