An audio power amplifier is used to amplify low-power-based audio signals like a radio receiver (or) an electric guitar pickup signal to a high range sufficient to drive a loudspeaker or headphone. These are found in all types of sound systems, including musical instrument amplifiers, sound reinforcement, home audio systems, etc. The inputs of low-power audio amplifiers can be any number of audio sources such as CD players, record players, cassette players & digital audio players. There are … [Read more...]
LA3161 IC : PinOut, Specifications, Circuit, Working & Its Applications
A preamplifier (preamp) is an electronic amplifier, used to change a weak electrical signal into a strong output signal which is sufficient to be noise-tolerant & for further processing (or) for transmitting to a power amplifier & a loudspeaker. So without using a preamp, the final signal would be distorted or noisy. These are normally used to amplify signals from analog sensors. Thus, the preamp is frequently located close to the analog sensor to decrease the noise & interference … [Read more...]
How to Choose an Instrumentation Amplifier ?
Instrumentation amplifiers (InAmps) are essential components in the world of electronic measurement and signal processing. They play a crucial role in amplifying small differential signals while rejecting common-mode noise, making them ideal for applications like strain gauges, thermocouples, and biomedical sensors. Choosing the right instrumentation amplifier for your specific application is critical to achieving accurate and reliable measurements. In this comprehensive guide, we will delve … [Read more...]
INA333 Instrumentation Amplifier : PinOut, Features, Circuit, Interface Microcontroller, Specifications & Its Applications
An instrumentation amplifier or in-amp is a differential amplifier that includes a differential input & an output where these devices are used for amplifying the difference between two input voltage signals while refusing any signals that are very common to two inputs. These devices are used in test & measurement equipment of industrial, data acquisition, medical & measurement applications. There are different instrument amplifier ICs are there like INA33, AD623, INA128, LT1167, … [Read more...]
Preamplifier : Circuit, Working, Types, Differences & Its Applications
An amplifier is a device used to amplify the power of the output signal, although with some additional noise whereas a preamplifier is a device used to change a weak electrical signal into a noise-tolerant clear output signal. These two amplifiers utilize voltage to enhance the power of sound signals, and although they perform it in different ways & they have different functions. When preamplifiers are normally used to increase the microphone recordings level without increasing its noise … [Read more...]
What is Class D Amplifier : Working, Types, Characteristics & Benefits
The initial invention of the class D amplifier took place in the year 1950 by Alec Reeves, but the device was actually called by the name class D in 1955. The first IC-based class D amplifier was introduced by Tripath in the year 1996 and this version was widespread across various domains. The need for class D amplifiers such as minimal power dissipation when compared with other topologies like class A, class AB and class B allowed class D to use in multiple applications. Also, minimal circuit … [Read more...]
What is Low Noise Amplifier : Working, Types, Design & Its Applications
In a communication system, a low noise amplifier or LNA is an essential component in the receiver section. The main role of this amplifier is to amplify the weak signal by keeping the noise as small as possible. The performance of this amplifier can be measured most particularly by considering different factors like its noise figure, gain, dynamic range, matching, stability, and return loss. These amplifiers play a key role in millimeter-wave applications like passive remote sensing, Earth … [Read more...]
What is a Differential Amplifier : Design & Its Applications
The differential amplifier is a basic operational amplifier that consists of three basic terminals. Among those, two are of input that is inverting and the non-inverting terminals. Hence, these amplifiers are the circuits that can perform various operations mainly it is the difference between the two applied input signals. The most important factor gain is applicable here for both the applied input signals. Hence this concept of application leads to the elimination of the noise quantity from … [Read more...]
What is Stagger Tuned Amplifier & Its Working
The theory of modern electronics is based on amplification, which is achieved using the circuit called the amplifier circuit. As we know, the gain of the amplifier is not varied according to the signal frequency. Hence, to amplify and select the desired range of frequency a tuned amplifier circuit is needed. An amplifier circuit, which is used to amplify the desired range of frequency or a narrow band range of frequencies and rejects all other frequencies known as tuned amplifiers. To amplify … [Read more...]
What are Clippers and Clampers & Their Working
There are many electronic circuits that are used for signal transmission. It can be an amplifier or modulator or it might be anything related to the signal strength enhancement. These devices are known for accepting the signal at a certain defined range of voltages. If the signal applied has an amplitude value greater than that of the range described this results in distortion or it may destroy the components present in the circuit. There is another problem related to signals that are their … [Read more...]