Answer Posted / s mishra

CMRR is the ratio of differential gain (Av) to common mode
gain (Acm) in a differential amplifier. Av=Vo/V1 - V2.
Acm=Vo/Vcm where Vcm=V1=V2.
Putting these values for CMRR,

CMRR=Av/Acm=Vcm/V1-V2
=V1/V1-V2
=V2/V1-V2
Now, V1-V2=Vcm/CMRR
For an ideal differential amplifier, CMRR=Infinite
Hence V1-V2=0 Or, V1 and V2 are almost at same potential.

If this is clear, please send feedbak to gula033@gmail.com

Is reverse saturation current of a diode is independent of reverse bias voltage?

1140

---

describe the functioning off all the 40 pins of 8085 processor?

1849

---

plz send me previous question paper of RRB section Engineer- Electronics ,erpdayal@gmail.com

2177

---

hi... if anybody wrote Airport Authority of India(ATC) examination.... pls kindly post the Questions wat they asked... specially in English & Reasonings.... it will useful to all others who are going to write AAI (Electronics) exam....

2257

---

i need modal Q. paper of junior enjineer for 1/2009 rrb ajmer exam cat no. 11 jell electrical thenkyou

2206

---

which transform is better? haar or hadamard

2108

---

documentation on improved trace buffer via Selective Data Capture Using 2-D Compaction for Post-Silicon Debug

2045

---

What is ionospheric bending?

1133

---

Explain the difference between silicon controlled switch (scs) and gate turn-off switch (gto)?

1176

---

What are the operation of igbt?

1073

---

i want computer associates placement papers from u? pls post to me.

2754

---

State the disadvantage of a 8-4-2-1 code.

1449

---

What is tunnel diode?

1080

---

What are the advantages of ics over discrete component circuits?

1205

---

1 explain advantage and dis advantages of FIR filters compared to IIRcouterparts ? 2 what is the need of filtering,ideal response of filters and actual response of filters ? 3 what is CMRR ? 4 which semiconductor device is used ad a voltage regulator and why ? 5 how can we rectify race around condition ?

2066

---