Inverting Amplifier using Opamp - Circuit Diagram

Inverting Amplifier using Opamp

Inverting amplifier is an amplfier whose amplfied output is negatively proportional to the input. Its gain will be negative. For eg. if we provide sine wave input, its amplified output will be 180° out of phase with input. When the input is voltage is increasing, output voltage will decrease and vice versa. Recommended Reading : Opamp – Operational Amplifier We all know that the open loop gain of an operational amplifier is very high for practical applicaitons. So we will apply [...]

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Virtual Ground - Opamp

Virtual Ground – Opamp

What is Virtual Ground ? As the name indicates it is virtual, not real ground. For some purposes we can consider it as equivalent to ground. In opamps the term virtual ground means that the voltage at that particular node is almost equal to ground voltage (0V). It is not physically connected to ground. This concept is very useful in analysis of opamp circuits and it will make a lot of calculations very simple. Virtual Ground – Opamp Lets see how the [...]

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Op-Amp Block Diagram

Opamp – Operational Amplifier

What is an Opamp ? Opamp is the abbreviation of Operational Amplifier. An operational amplifier is a direct coupled high gain amplifier usually consisting of one or more differential amplifiers followed by a level transistor and an output stage. The output stage is generally push-pull or complementary symmetry push-pull amplifier. Opamps are building blocks of analog circuitry and is also known as differential amplifier as its output depends on difference between input signals. It can also be used to amplify both DC as [...]

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