An amplifier is one of the most commonly used electronic devices in the world. It's a basic building block of a vast number of circuits, and comes in various forms. Amplifiers can be defined simply as an electronic device that increases the power of a signal. In other words, it increases the amplitude of a signal, and makes it stronger than the given input. Although this sounds simple in theory, amplifiers have a lot of parameters and conditions in the real world. Amplification is never … [Read more...]
Know about Klystron Amplifier Types with Applications
The term “Klystron amplifier” was designed by two brothers, namely Sigurd Varian and Russell at Stanford University.The prototype and the demonstration of this amplifier is finished successfully on 30th august 1937 and published in the year 1939. News of the klystron amplifier was influenced by the US and UK researchers which are working on radar device. These amplifiers are one type of microwave vacuum tubes which are used as an amplifiers in some radar devices as amplifiers. These amplifiers … [Read more...]
What is an Op Amp Differentiator : Circuit & Its Working
An operational amplifier or Op-Amp is a linear device that is used in ideal DC amplification, signal conditioning, filtering, and also in mathematical operations like addition, subtraction, integration, and differentiation. Op-amp is a voltage amplifying device which is having external feedback components such as capacitors and resistors between output and input terminals. The feedback components presenting in Op-Amp are useful to carry on the operation in an efficient way. An Op-Amp is a … [Read more...]
What is Common Source Amplifier : Working & Its Applications
In electronic circuits, amplifiers are used to increase the strength or amplitude of the input signal without any phase change and frequency. Amplifier circuits are made up of either FET (Fied Effect Transistor) or normal bipolar junction transistor-based on their 3 terminals. The advantage of amplifier circuit using FET over BJTs is used as small-signal amplifiers because they produce high input impedance, high voltage gain, and low noise in the input signal. FET is a voltage-controlled device … [Read more...]
What is Transformer Coupled Amplifier & Its Working
In multi-stage amplifiers, coupling devices are used to connect different stages of transistor circuits in cascade. When the output of the first stage is connected to the input of the second stage through a coupling/coupled device, then it is referred to as a coupled amplifier. The coupling devices would be a transformer or resistor or capacitor. Based on these devices, there are different types of coupling amplifiers/coupled amplifiers such as Direct-coupling amplifier, RC coupled amplifier, … [Read more...]
What is Cascode Amplifier : Circuit & Its Working
Cascode is a technique implied to improve the performance of the analog circuits. The same technique can be applied to transistors and the vacuum tubes to make the circuit better performance-wise. The word cascode is initiated in the year 1939 by Frederick Vinton Hunt's and Roger Wayne Hickman's article during the discussion of voltage stabilizer applications. The discussion was about to propose a method to replace the pentode by cascoding two triodes. In cascoding, two transistors are used … [Read more...]
What is an Isolation Amplifier : Working & Its Applications
Sometimes, while performing electrical operations, it becomes important for us to isolate one part of the circuit to another to prevent excess loss of energy. For that reason, we use an isolation amplifier which acts as an isolating device. The main purpose of the isolation amplifier is to electrically separate the circuit which comes before the amplifier from the circuit which comes after the amplifier. So, basically we can say that an isolation amplifier can be used to give ohmic isolation … [Read more...]
What is Tuned Amplifier : Types & Its Applications
In the field of wireless communication, the signal strength must be increased to transmit the signal for long distances. So this can be made possible by using the amplifier. It enhances the strength of the signal without altering the information. Amplifiers are of various types based on the frequency ranges and applications. The required ones are selected and placed in the circuit. For audio signal amplifications, audio amplifiers are used. The audio amplifiers are not capable enough of … [Read more...]
What is a Single Tuned Amplifier : Working & Its Applications
Tuned amplifiers are mainly preferred to amplify the high-frequency signals in wireless communication. The tuned amplification works based on the tuning circuit implied as load. The range of the frequencies defined for a particular amplification circuit can be fixed or dynamic based on applications. The tuning circuit present at the load consists of an inductor and capacitor. For dynamic frequencies, the values of capacitance should be varied. These amplifiers are very advantageous due to its … [Read more...]
What is an Instrumentation Amplifier : Circuit and Its Working
Instrumentation Amplifier is the basic amplifier and the designing of this can be done based on the requirement in different applications. For example, measurement of temperature or it might be humidity for the industrial applications. These measurements must be converted in terms of signals that are in electrical form. Finally, this signal must be provided as the input to this amplifier so that the amplification of the signals can be obtained. The main intention of this amplifier is to … [Read more...]