Op Amp Circuit - Simple non-inverting circuit question

In summary, the conversation is about a non-inverting op-amp circuit and the correct setup of the KCL equation. The person is confused about the lack of a variable to solve for in the equation and is seeking clarification on the correct setup of the equation.
  • #1
dwn
165
2
Op Amp Circuit -- Simple non-inverting circuit question

Homework Statement



Image2. The attempt at a solution

0V*(236k/R1) + (-0.1cos(500t)*(236k/1k)) = 23.7cos(500t)

Is this the correct setup of the equation because there is no R1 variable to solve for...?
 

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  • #2
dwn said:

Homework Statement



Image


2. The attempt at a solution

0V*(236k/R1) + (-0.1cos(500t)*(236k/1k)) = 23.7cos(500t)

Is this the correct setup of the equation because there is no R1 variable to solve for...?

I am not understanding your equations. KCL equations are in the form of currents leaving a node, so voltages divided by resistances...
 

1. What is an op amp circuit?

An op amp (operational amplifier) circuit is an electronic circuit that uses an operational amplifier to amplify an input signal. It is commonly used in a wide range of electronic devices, such as audio amplifiers and signal processors.

2. What is a non-inverting op amp circuit?

A non-inverting op amp circuit is a type of op amp circuit where the output signal is in phase with the input signal. This means that the output is not inverted or reversed, but is instead the same as the input signal.

3. How does a non-inverting op amp circuit work?

In a non-inverting op amp circuit, the input signal is connected to the non-inverting input of the op amp, while the inverting input is connected to ground. The output is then fed back to the inverting input through a feedback resistor. This creates a virtual ground at the inverting input, allowing the op amp to amplify the input signal without any phase inversion.

4. What are the advantages of using a non-inverting op amp circuit?

One of the main advantages of a non-inverting op amp circuit is that it has a very high input impedance, meaning that it does not draw much current from the input signal source. It also has a low output impedance, allowing it to drive a variety of loads without significant signal degradation. Additionally, it has a high gain and low distortion, making it useful for amplifying weak signals.

5. How can I calculate the gain of a non-inverting op amp circuit?

The gain of a non-inverting op amp circuit can be calculated by dividing the feedback resistor value by the input resistor value. The resulting gain will be equal to (1 + (Rf/Rin)). For example, if the feedback resistor is 10kΩ and the input resistor is 1kΩ, the gain will be (1 + (10/1)) = 11. This means that the output signal will be 11 times larger than the input signal.

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