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

Dual beam, explane the special features of dual beam?

explane the special features of dual beam?

State the function of rs1 and rs0 bits, State the function of RS1 and RS0 b...

State the function of RS1 and RS0 bits in the flag register of intel 8051 microcontroller? RS1 , RS0 - Register bank select bits RS1   RS0 BankSelection 0        0   Bank

Performance equations of three phase induction motor , Performance Equation...

Performance Equations of Three Phase Induction Motor When balanced 3-? voltages are applied to the  stator  winding  a rotating magnetic field  of constant amplitude is produc

Induction motor, principle and operation of a 3phace induction motor

principle and operation of a 3phace induction motor

Develop and execute a pspice program, Develop and execute a PSpice program ...

Develop and execute a PSpice program to solve for the current I 2 in Figure.

Compute the motor speed, Consider the 220-V, 1800-r/min dc motor, controlle...

Consider the 220-V, 1800-r/min dc motor, controlled by a three-phase fully controlled rectifier from a 60-Hz ac source. The armature-circuit resistance and inductance are 1.5  and

Simulink help, I want simulink model for carrier based pwm method

I want simulink model for carrier based pwm method

Voltage falls across a resistor simple circuit, To design a VI that can be ...

To design a VI that can be used to show how the voltage falls across a resistor in a simple CR circuit when excited by a step function. The title of the VI will be Capacitor Res

Collector-coupled astable multivibrator, what happens when the resistors ha...

what happens when the resistors have different values

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