Understanding Op-Amp Integrator: Why the Ramping Effect?

  • Thread starter Thread starter ZeroScope
  • Start date Start date
  • Tags Tags
    Op-amp
Click For Summary

Discussion Overview

The discussion revolves around understanding the operational amplifier (op-amp) integrator, specifically focusing on the mechanism behind the ramping effect observed in its output. Participants explore the relationship between the input voltage, the capacitor, and the resistor in the circuit, as well as the role of time in this process.

Discussion Character

  • Exploratory
  • Conceptual clarification

Main Points Raised

  • One participant expresses confusion about how the integration of input voltage leads to the ramping effect, suggesting that it may involve the interaction between the capacitor and resistor.
  • Another participant acknowledges a lack of clarity regarding the time factor in the integration process, indicating uncertainty about its role in the ramping effect.
  • A subsequent post reiterates the confusion about the time dependency, emphasizing the need for further understanding.
  • One participant offers a resource link that may provide additional information about the inverting integrator circuit.

Areas of Agreement / Disagreement

Participants do not appear to reach a consensus, as multiple viewpoints and uncertainties regarding the integration process and the influence of time remain evident throughout the discussion.

Contextual Notes

Participants express limitations in their understanding of how time affects the integration process, indicating that assumptions made earlier may not fully capture the dynamics of the op-amp integrator.

ZeroScope
Messages
18
Reaction score
0
I'm having trouble understanding how this actually works. I understand that it integrates the input voltage and that the output voltage is the same as the voltage passing over the capacitor in the circuit. What i don't understand is why this causes the ramping effect?
I'm thinking it may have to do with one voltage being integrated by the integrator with relation to the capacitor and the resistor which creates a different value for the voltage which then gets integrated...etc. which then causes different values which plotted on a graph would give the ramp effect.
Is this how it works? thanks for the help.
 
Engineering news on Phys.org
I just realized i neglected the time that this takes to happen. As its due to a certain time interval I am not sure whether what i originally assumed is correct. Now I am confused as to where time fits in with all this.
 
Sorry i realized i didnt take the fact that it is time dependent into my assumption. In this case I am even more confused heh.
 
Does this help? Or do you still have specific questions about the simple inverting integrator:

http://courses.ece.uiuc.edu/ece486/labs/lab1/386_op_amp.pdf
 

Similar threads

Amplifier for piezoelectric sensor, OP Amp circuit
  • · Replies 6 ·
Replies
6
Views
6K
DC input random offset voltage for diff. amplifier with current-mirror load
  • · Replies 2 ·
Replies
2
Views
2K
What's wrong in my LTspice simulation of an Op-Amp integrator circuit?
  • · Replies 9 ·
Replies
9
Views
8K
Op-amp compensation of cascade fudges audio signal oddly
  • · Replies 3 ·
Replies
3
Views
2K
How do rail-to-rail op amps get so close to the rail voltages?
  • · Replies 9 ·
Replies
9
Views
2K
Confusion on: High Pass Filter at Op Amp Input
  • · Replies 6 ·
Replies
6
Views
3K
Design of an Op Amp Circuit for Voltage Amplification
  • · Replies 9 ·
Replies
9
Views
5K
Building RF Noise Generator Circuit w/ LM324D SMD Op Amp
  • · Replies 12 ·
Replies
12
Views
4K
Example of a variable capacitor input op-amp to voltage....
  • · Replies 5 ·
Replies
5
Views
3K
Equal Input Voltages on Op-Amps
  • · Replies 4 ·
Replies
4
Views
2K