Working of Operational Amplifier
Let us see the working of operational amplifier through the circuit.
An inverting operational amplifier
- The inverting terminal of inverting operational amplifier is fed with the input signal whereas the non-inverting terminal is usually connected to ground or some reference voltage.
- Next a feedback circuit is applied. In this a feedback resistor is connected between the output of op-amp and inverting input terminal. This resistor primarily controls the gain.
- Now an ideal op-amp amplifies the input voltage applied. The negative feedback from the output to the inverting input creates a stable condition. This helps us to control the output generated. The whole time op-amp works to ensure that the voltage at the inverting input is equal to the voltage at the non-inverting input.
- Due to the inverting nature, the input signal is inverted .This means if input signal increases then output will decrease and vice-versa. The gain in final output is calculated using the formula gain=RF/Rin.
- After the amplification and inversion of input signal along with phase inversion ,the output wave is generated at the junction. The output voltage is denoted by Vout.
Inverting Operational Amplifier
Operational amplifiers are an important category of instruments used in electronics engineering. Often they are used for the task of amplifying the output. In this category of instruments, there is a subcategory known as Inverting Operational Amplifiers. They are typically used when we need an opposite phase for the input waveform. In this article, we will discuss what is Inverting Operational Amplifier. We will discuss their work and the equation used for calculating the gain of an Inverting Operational Amplifier. We will also discuss the advantages and disadvantages of Inverting Operational Amplifier. To understand the real-life usage of these, we will also discuss some applications of Inverting Operational Amplifiers. The article will also aim to provide a comparative analysis between an Inverting operational Amplifier and a Non-Inverting Operational Amplifier. We will conclude the article with some frequently asked questions.
Table of Content
- Inverting Operational Amplifier
- Working
- Inverting Amplifier Equation and Gain
- Advantages
- Disadvantages
- Application
- Inverting Vs Non-Inverting Op-Amp
- Solved Examples