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HomeHomework HelpelectronicsOperational Amplifiers Basics

Operational Amplifiers Basics

Operational amplifiers (op-amps) are devices that amplify the difference between their two inputs by a large gain factor. They have five terminals, including power supply terminals, inverting and non-inverting inputs, and an output terminal.

beginner
2 hours
Electronics
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Overview

Operational amplifiers are essential components in electronics, widely used for amplifying voltage signals. They can be configured in various ways, such as inverting and non-inverting amplifiers, to achieve different functionalities. Understanding the principles of feedback and gain calculation is c...

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Key Terms

Operational Amplifier
A high-gain voltage amplifier with differential inputs and a single output.

Example: Op-amps are used in audio amplifiers.

Inverting Amplifier
An op-amp configuration that outputs a voltage that is inverted and amplified.

Example: Inverting amplifiers are used in signal processing.

Non-Inverting Amplifier
An op-amp configuration that outputs a voltage that is amplified but not inverted.

Example: Non-inverting amplifiers are used in audio applications.

Feedback
The process of routing a portion of the output back to the input.

Example: Negative feedback stabilizes the gain of an op-amp.

Gain
The ratio of output voltage to input voltage in an amplifier.

Example: The gain of an inverting amplifier can be calculated using resistors.

Voltage
The electric potential difference between two points.

Example: Voltage is measured in volts (V).

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Key Concepts

Inverting AmplifierNon-Inverting AmplifierFeedbackGain