Understanding Op Amp Inverting Amplifiers: A Comprehensive Guide

In summary, an op amp, or operational amplifier, is an electronic component used for amplifying and manipulating electrical signals. It has two input terminals and one output terminal, and can perform tasks such as amplification, filtering, and mathematical operations. It works by amplifying the difference between the input terminals by a large factor using transistors and other components. Op amps have various applications in electronics, including audio amplification and control systems, and their ideal characteristics include infinite open-loop gain, zero input and output impedance, infinite bandwidth, and zero offset voltage. To analyze op amp circuits, one can use basic circuit analysis techniques, ideal op amp models, or simulation software.
  • #1
Myrddin
25
0
Inverting amplifer question
http://img210.imageshack.us/i/electronicsquestionsq30.jpg/

Can do part a) ! Vout/ Vin = -R2 / R1

and found part d) in a book, that closed loop gain is less but more linear and am able to draw the graph.

Any help with b) c) e) f) would be great, particulary part b) and c) as i think its something very basic that i should know!
 
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  • #2
Figured out part b) and c), its to counter input bias current and R = 1/R1 + 1/R2
 

1. What is an op amp?

An op amp, short for operational amplifier, is an electronic component that is used to amplify and manipulate electrical signals. It has two input terminals, one for the signal to be amplified and one for a reference voltage, and one output terminal. Op amps are commonly used in electronic circuits to perform tasks such as amplification, filtering, and mathematical operations.

2. How does an op amp work?

An op amp works by taking the difference between the two input terminals and amplifying it by a very large factor, typically in the hundreds of thousands. This amplified difference is then output through the single output terminal. The amplification is achieved through the use of transistors and other electronic components within the op amp.

3. What are the common applications of op amps?

Op amps have a wide range of applications in electronics, including audio amplification, signal processing, instrumentation, and control systems. They are also used in combination with other electronic components to create more complex circuits, such as analog-to-digital converters and filters.

4. What are the ideal characteristics of an op amp?

The ideal characteristics of an op amp include infinite open-loop gain, zero input impedance, zero output impedance, infinite bandwidth, and zero offset voltage. However, in reality, op amps have non-ideal characteristics that can affect their performance, such as limited bandwidth, input and output impedance, and offset voltage.

5. How do you analyze op amp circuits?

To analyze op amp circuits, you can use basic circuit analysis techniques, such as Kirchhoff's laws and Ohm's law. You can also use the ideal op amp model, which assumes an infinite open-loop gain and other ideal characteristics. This model simplifies the analysis but may not accurately reflect the behavior of a real op amp. Alternatively, you can use simulation software to model and analyze op amp circuits.

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