Why V- = 0 in Paint Doc Op-Amp Question

  • Thread starter Thread starter Miike012
  • Start date Start date
  • Tags Tags
    Op-amp
Click For Summary
SUMMARY

The discussion centers on the behavior of the inverting input voltage (V-) in operational amplifiers (op-amps) within a paint document context. It is established that V- is not always equal to zero; rather, it equals V+ unless the op-amp output is saturated. The conclusion emphasizes the importance of understanding the conditions under which V- may differ from V+. This clarification is crucial for accurate circuit analysis and design.

PREREQUISITES
  • Understanding of operational amplifier fundamentals
  • Knowledge of voltage levels in op-amp circuits
  • Familiarity with saturation effects in op-amps
  • Basic circuit analysis skills
NEXT STEPS
  • Research the concept of op-amp saturation and its effects on circuit behavior
  • Learn about the virtual short concept in op-amp configurations
  • Explore different op-amp configurations and their voltage relationships
  • Study practical applications of op-amps in signal processing
USEFUL FOR

Electrical engineers, students studying circuit design, and anyone involved in analog electronics who seeks to deepen their understanding of operational amplifier behavior.

Miike012
Messages
1,009
Reaction score
0
Problem in paint doc.
I'm interested in why V- = 0.

Is it always true that V- = 0?
If not how was it decided that V- = 0 for this given probem?
 

Attachments

  • VV.jpg
    VV.jpg
    7.2 KB · Views: 414
Physics news on Phys.org
Nevermind I figured it out. V+ = 0
and V+ = V-
 
You still asked a good question. Is V- always zero?
Answer: no, but it's always = V+ unless the op amp output is saturated.
 

Similar threads

Engineering Why is the voltage source high potential into node 1 at -12 V in this op amp problem?
  • · Replies 15 ·
Replies
15
Views
2K
Engineering Op amp circuit -- Did I calculate the output voltage correctly?
  • · Replies 12 ·
Replies
12
Views
4K
Engineering Calculating the unknown voltages in ideal op-amp circuits
  • · Replies 13 ·
Replies
13
Views
3K
Engineering Negative PSRR of the Two-Stage Op Amp
  • · Replies 0 ·
Replies
0
Views
2K
Inverting Op-amp signals and Sawtooth waveform generation
  • · Replies 44 ·
2
Replies
44
Views
5K
Engineering Circuit input impedance with ground in an OP Amp circuit
  • · Replies 4 ·
Replies
4
Views
3K
Solving an Ideal Op Amp Circuit Problem
  • · Replies 17 ·
Replies
17
Views
3K
Engineering What is the impact of ADC quanta on op-amp offset error?
  • · Replies 4 ·
Replies
4
Views
2K
Calculating the voltage in an OP-amp circuit with a current source
  • · Replies 1 ·
Replies
1
Views
2K
Output voltage and output current of an Opamp
  • · Replies 13 ·
Replies
13
Views
3K