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

Briefly explain about wye-delta transformation, Q. Briefly explain about Wy...

Q. Briefly explain about Wye-delta transformation? Certain network configurations cannot be reduced or simplified by series-parallel combinations alone. In some such cases wye-

Substation preventive maintenance scheduling optimization, Introduction: ...

Introduction: The scheduling system that is followed by the maintenance department is not well established and is dependable on employee's personal judgment. There were a lot o

Find the resistor values of rc, Apply the rule-of-thumb dc design presented...

Apply the rule-of-thumb dc design presented in this section for a silicon npn BJT with β = 70 when the operating Q point is defined by I CQ = 15 mA and I BQ = 0.3 mA, with a dc s

Biasing, Biasing: Bipolar transistor amplifiers have to be properly bi...

Biasing: Bipolar transistor amplifiers have to be properly biased to operate properly. In circuits made up with individual devices (discrete circuits), biasing networks contai

Magnitude comparator, circuit diagram of 2 bit magnitude comparator

circuit diagram of 2 bit magnitude comparator

Programming languages - introduction to microprocessors , Programming langu...

Programming languages As we  have seen  the evolution of computer  hardware  similarly  programming  languages also  have their  history  of development from  machine  language

Shunt dc motor, Shunt DC motor In this arrangement, the armature and f...

Shunt DC motor In this arrangement, the armature and field coils are connected in parallel (the motor is called 'shunt connected').     Analysis With refere

Illustrate the experts model of GPS system, Illustrate the experts model of...

Illustrate the experts model of GPS System A fundamental expert system is made up of the below elements: Setting up an Expert System -  Information is collected

Electrical circuits, equivalent circuit for transistor using h parameters

equivalent circuit for transistor using h parameters

Resistors, Difference between linear and non-linear resistors

Difference between linear and non-linear resistors

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