Lc filter, Electrical Engineering

Assignment Help:

LC Filter

To the load resistance RL the ripple factor is directly proportional in the inductor filter and inversely proportional to RL in the capacitor filter. Hence if these two filters are joint as LC filter or L section filter as displayed in figure the ripple factor will be independent of RL.

42_LC Filter.png

It will increase the time of conduction if the value of inductance is increased. At some vital value of inductance, one diode, either D1 or D2 will all the time conducting.

The output voltage can be expressed like below from Fourier series,

V0 = (2Vm / π) - 4Vm / 3 π cos2 ∞ t

Then the dc output voltage,

Vdc = 2Vm/ π

∴ Vr rms = Irms . Xc = √2 /3. Vdc. Xc /XL

The ripple factor

ϒ= Vr rms / Vdc = √2 /3.  Xc /XL

= √2 /3. 1/4 ∞2 CL

∴ Xc = 1 /2 ∞ C & XL 2 ∞ L


Related Discussions:- Lc filter

DC motor, what is the necessity of copper brushes in dc motors?

what is the necessity of copper brushes in dc motors?

Determine the full load voltage regulation, A 3 phase 60 hertz induction m...

A 3 phase 60 hertz induction motor has 8 poles and operates with a slip of .05 for a certain load. Compute in r.p.m. the (a)speed of the rotor with respect to the stator, (b)spe

Explain working of encoders, Explain working of Encoders? Encoding is t...

Explain working of Encoders? Encoding is the process of forming an encoded representation of a set of inputs, and it is the converse of the decoding operation. An encoder is a

Current transformers., CT 10VA, 50A/5A, 6ohz, 2.4KV required nominal primar...

CT 10VA, 50A/5A, 6ohz, 2.4KV required nominal primary voltage?

Determine the function of time for the clock, Q. Determine the function of ...

Q. Determine the function of time for the clock? Given the block diagram for a 4-bit shift-left register shown in Figure (a), draw the output (Q 0 , Q 1 , Q 2 , Q 3 , and data

Explain the transfer characteristics, Q. Explain the transfer characteristi...

Q. Explain the transfer characteristics in a few words ? The transfer characteristics are a plot of an output (or a drain) current versus an input controlling quantity. There i

Find the real and reactive powers per phase, Q. A 345-kV, 60-Hz, three-phas...

Q. A 345-kV, 60-Hz, three-phase transmission line delivers 600 MVA at 0.866 power factor lagging to a three-phase load connected to its receiving- end terminals. Assuming that the

Conditions in which rc circuit behaves as integrator, Q. Explain the condit...

Q. Explain the conditions under which an RC circuit behaves as Integrator? Integrator is a circuit in which the output voltage is proportional to the integral of the input. Out

Linear components, A linear circuit component is one that has a linear I V ...

A linear circuit component is one that has a linear I V characteristic

Explain time division switching, Explain time division switching? Tim...

Explain time division switching? Time  Division  Switching:   A  switching  element  can  be  shared  by  number  of concurrently  active  speech  circuits.  It is the princi

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