Electronic Devices - Op-Amp Applications - Discussion

Discussion Forum : Op-Amp Applications - General Questions (Q.No. 16)
16.
Calculate the output voltage.

–6.00 mV
6.0 mV
6.12 mV
–6.12 mV
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
6 comments Page 1 of 1.

Mish said:   9 years ago
Vo = [(rs+rf)/rs] * Vs.
Rs = 2.4k,
Rf = 120k,
Vs = 120 * 10^-6,
Vo = (2.4k + 120k)/2.4k,
Vo = 51 * 120 * 10^-6,
Vo = 6.12mV,

Seema said:   9 years ago
Vo = (1 + Rf/R1)V1.
= (1 + 120/2.4) * 120.
= (1 + 50) * 120.
= 51 * 120.
= 6120 Micro V.
= 6.12 mV.

NijiL said:   1 decade ago
Can anyone explain the practical higher and lower limits for feedback resistor values in a non inverting amplifier?

i.e., Consider 1+(10E/1E), 1+(10k/1k) and 1+(100M/10M) Values. Which will give better response and why?

Ahmet said:   1 decade ago
Gan is =(120/2,4)+1=51.

Vo=Gain*V1=51*120=6.12mV.

Mallik said:   1 decade ago
According to op-amp rules:

[(Vo-V1)/120k] = V1/2.4k

Solving for Vo gives 6.12mV

Seema said:   1 decade ago
This is non inverting configuration so it's gain is (1+R2/R1)
and output voltage will be (1+R2/R1)*V1. Putting values we get answer.

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