Input bias current of operational amplifier, Electrical Engineering

Assignment Help:

Q. Input bias current of operational amplifier?

When operated at extremely low quiescent current values, the base bias currents will be low; but they do have to be taken into consideration. The input bias current IB for an op amp is defined as the average of the two input currents with the inputs grounded, i.e.,

1085_Input bias current of operational amplifier.png

A typical value for a µA 741 is 80 nA; for a µA 771 it is 50 pA.When the resistance of the source feeding the op amp is large enough, the input bias current may have an adverse effect. As shown in Figure, where the noninverting input is grounded and the inverting input is connected to a source of 1-M resistance and of voltage vS momentarily at 0 V, the bias current of 80 nA generates a voltage of -80 mV on the noninverting input.


Related Discussions:- Input bias current of operational amplifier

Describe the lastprivate clause, Q. Describe the Lastprivate Clause? Th...

Q. Describe the Lastprivate Clause? The lastprivate clause declares one or more list items to be private to a thread in additin causes corresponding original list item to be up

Find the highest speeds at which linkage would be possible, Q. Two coupled ...

Q. Two coupled synchronous machines are used as a motor-generator set to link a 25-Hz system to a 60-Hz system. Find the three highest speeds at which this linkage would be possibl

How to convert decimal to binary number, Q. How to convert Decimal to Binar...

Q. How to convert Decimal to Binary number? To convert the decimal to binary is slightly more difficult. There are two procedures (Methods) that may be used to convert from dec

Find the quantity of electricity transferred, If a current of 20A flows for...

If a current of 20A flows for five minutes, find the quantity of electricity transferred. Quantity of electricity,   Q = It = 20 x 5 x 60 = 6000C     

Explain about frequency shift keying, Q. Explain about Frequency Shift Keyi...

Q. Explain about Frequency Shift Keying? In this scheme frequency of the carrier signal is changed according to the data. Transmitter sends different frequencies for a "I" than

Draw the circuit of battery having of three cells in series, One battery ha...

One battery having of three cells in series. External resistance is 5 Ω E.m.f each cell is 1.5V and internal resistance is 0.2?. Measure the current flow and draw the circuit.

Overview of decimal number system, Q. Can you give some Overview of Decimal...

Q. Can you give some Overview of Decimal Number System? The Decimal Number System uses base 10 and It includes the digits from 0 through 9. The weighted values for each positio

Critical field circuit resistance and critical speed, Q.   Define and expla...

Q.   Define and explain the critical field circuit resistance and critical speed of a DC shunt generator.   Ans. The OCC and R - line for a DC shunt generator. As, R f is

Determine the sampling rate, Q. If an analog message that has a spectral ex...

Q. If an analog message that has a spectral extent of 15 kHz is sampled at three times the Nyquist rate, determine the sampling rate.

Semiconductors, Charge density I n a semiconductor

Charge density I n a semiconductor

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd