Engineering Projects

In this article we will discuss about buffer or inverter IC, its key parameters, internal circuit and applications. Description of Buffer or Inverter IC The buffer or inverter is one of the key functions used in all digital logic assemblies. As the name implies, this circuit provides a stage of buffering, separation in impedance, between other logic elements of buffering, separation in impedance, between other logic elements and, when it acts as inverter, changes the input signal into its complement. While buffer or inverters are most frequently used in combination…

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In the Article Linear Follower Amplifier we are going to discuss about current amplifier, its parameter, applications and comment. Current amplifiers are basically Class A Amplifier which usually have a voltage gain of 1 and effectively act as impedance transformers. Their main feature is their ability to develop a substantial output current. Sometimes they are called “linear followers,” similar to emitter follower transistor circuits. Current amplifiers are often used in series with an operational amplifier, inside the feedback loop, to provide additional output current. Key parameters of linear follower amplifier…

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In this article we will discuss about programmable operational amplifier IC, its key parameters, applications, parts number and comments. Programmable Operational Amplifier Description Some general-purpose op amps are available with an external tab that can be connected to a “set” or programmable current. This external terminal can control such important parameters as the power dissipation, bandwidth, slew rate, output current, input impedance, and input noise. While the programming current controls some of these parameters, other parameters will remain fixed. Externally supplied programming current can be in the form of a…

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In this article we will discuss about Isolation amplifier, its key parameters, applications and comments. So let’s start with description. Isolation Amplifier Description: Consisting of several stages of amplification, the input amplifier is either electrically or optically isolated from the output. The input amplifier is usually a differential amplifier, the output of which is RF modulated and then transferred through an RF transformer to the second stage, where it is demodulated and filtered. The DC power supply for the input amplifier section must also be isolated so that there is…

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In this article, we will discuss about Sample and Hold Amplifier IC, its key parameters and its applications. But before that, let us see what a sample and hold circuit is. The principle underlying the digital signal processing is that of sampling the analog signal. Sampling basically means obtaining the discrete time signals from the reduction of the continuous time signals. The Nyquist–Shannon sampling theorem is one of the well-known and commonly used sampling theorem in signal processing. A sample and hold circuit obtains samples of an analog signal and…

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