Explain inductorless filters, Electrical Engineering

Assignment Help:

Q. Explain Inductorless Filters

Inductorless (Active) Filters

Filters (used to pass or eliminate certain frequency components of a signal) that are suitable for IC fabrication, but which do not contain inductors, are known as active filters. They have the op amp as a common component. Figure 5.4.13 shows the basic op-amp circuit with frequency-dependent impedances. The voltage gain or voltage transfer function of this circuit is given by

1740_Explain Inductorless Filters.png

with Zi = Ri and Zf = Rf (1/j ωCf ) (i.e., Rf and Cf in parallel). We have a low-pass filter with

1215_Explain Inductorless Filters1.png

1281_Explain Inductorless Filters2.png

952_Explain Inductorless Filters3.png

is sketched in Figure 5.4.14, from which one can see that at the half-power or 3-dB point of fl, the dc value Rf /Ri goes down by a factor of 1/ √ 2 or 0.707. With Zf = Rf and Zi = Ri + 1/j ωCi (i.e., Ri and Ci in series), we have a high-pass filter for which we obtain

1121_Explain Inductorless Filters4.png

1344_Explain Inductorless Filters5.png


Related Discussions:- Explain inductorless filters

Diodes, Analysis of diode circuits

Analysis of diode circuits

Explain time multiplexed space switching, Explain time multiplexed space sw...

Explain time multiplexed space switching? With a neat diagram illustrate its operation. Ans: Time division switches where an outlet or an inlet corresponded to a single s

Determine the reactive kva of the motor, Athree-phase, wye-connected, round...

Athree-phase, wye-connected, round-rotor, 220- V, 60-Hz, synchronous motor, having a synchronous reactance of 1.27  per phase and negligible armature resistance, is connected in p

Pentium processor has a superscalar architecture, Q.‘Pentium processor has ...

Q.‘Pentium processor has a superscalar architecture'. Describe the meaning of statement. Ans:Pentium microprocessor is organized with three execution units. One executes float

Explain mesh analysis, Mesh analysis Analysis using KVL to solve for th...

Mesh analysis Analysis using KVL to solve for the currents around every closed loop of the network and hence verify the currents through and voltages across every elements of t

What do you mean by antenna gain, Q. What do you mean by Antenna gain? ...

Q. What do you mean by Antenna gain? Antenna gain depends on both shape and size. Dipole antennas, commonly used at lower radio frequencies, are made up of a rod or wire of len

Explain polling, What is meant by polling? In polling schemes, a set of...

What is meant by polling? In polling schemes, a set of address lines is driven by the controller to address every of the masters in sequence. When a bus request is received fro

Find the impedance of the series combination, Q. An RL series circuit carri...

Q. An RL series circuit carries a current of 0.02 cos 5000t A. For R = 100  and L = 20 mH, find the impedance of the series combination and determine the voltage across the series

General equivalent circuits, What we have seen for practical power supplies...

What we have seen for practical power supplies applies to any  electrical circuit provided it contains only linear components

Cma complement accumulator instruction, CMA Complement Accumulator  Instru...

CMA Complement Accumulator  Instruction Complement the  contents of the accumulator  i e the   accumulator  al once are converted zeros  and all zeros  are converted to  ones.

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