Answer / khurram_bhati01

OP-AMP IS BASICALLY AN IC, E.G 741 WHICH HAVE THE FOLLOWING
CHARACTERISTICS.
HIGH INPUT IMPEDENCE
LOW OUTPUT IMPEDANCE
HIGH GAIN

AN OP-AMP CAN BE USED AS AMPLIFIER AND AS A COMPARATOR.
THESE ARE ITS APPLICATION.

IN AMPLIFER MODE ITS JUST AMPLIFY THE INPUT SIGNAL.
IN COMPARATOR MODE IT IS USED TO SENCE THE TWO INPUT
VOLTAGE, ONE IS REFERANCE AND OTHER VARIES. COMPARATOR
CHANGES ITS OUTPUT STATE AS THE VARING VOLTAGE INCREADED OR
DECREASED FROM THE REFERANCE.

Answer / rupesh raj karn

OP AMP is just an IC741 found in market.
Comparator is an OP AMP used in open loop configuration.
Amplifier is OP AMP in closed loop configuration

How the data's are stored in a memory card/ pendrive?

0 Answers  

---

What is the main differnce between the SCADA and HMI also what is DCS?

0 Answers   Maestro,

---

6dB pad introduces how much attenuation?

3 Answers   BSNL,

---

differnce between ups and inverters. Series and parallel batteries connections of ups.

0 Answers  

---

What are the advantages & disadvantages between analogue & digital communications?

3 Answers  

---

---

Why are ics more reliable than discrete circuits?

0 Answers  

---

What is Modulation and Demodulation?

7 Answers  

---

In CDMA we are use PN'pseudo random noise ",why is is call Noise.

2 Answers   TATA,

---

What is pcb?

0 Answers  

---

What is meant by fermi level in semiconductor? Where does the fermi level lie in an intrinsic semiconductor?

0 Answers  

---

describe the bandwidth delay problem?

1 Answers   Hathway,

---

What are encoders and decoders?

0 Answers  

---