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 control, how thyristor work in speed control??

how thyristor work in speed control??

Inverting integrator circuit, Q. Consider the inverting integrator circuit ...

Q. Consider the inverting integrator circuit shown in Figure. Let C = 0.4µF and R = 0.1M. Sketch v o for a period of 0.5 s after the application of a constant input of 2 V at the

Digital switching switching in telecommunication, Name the switching scheme...

Name the switching schemes used in a digital exchange

Draw the circuit of a 7805 voltage regulator, Q. Draw the circuit of a 7805...

Q. Draw the circuit of a 7805 voltage regulator? Explain the functions of the capacitors used at its input and output sides. Functions of capacitors used at input and outp

Apply required morphological operations and give the output, You are given ...

You are given a binary image consisting of only zeros and ones, see image-A. Apply required morphological operations and give the output images on the grid.

What is the significance of negative voltage, Q. What is the significance o...

Q. What is the significance of giving a negative voltage to the gate higher than that of the source?  This is done to reach the saturation at a lower of level of V DS .  The re

Describe the phasor equations, Q. Describe the following phasor equations r...

Q. Describe the following phasor equations represented in the time domain: (a) ¯ E = K1e-¯ γz (b) ¯ E = K2e ¯ γz where z is the space coordinate, K1 and K2 are constants,

Determine IS in the given circuit, Q. Given that V 0 = 10 V, determine IS ...

Q. Given that V 0 = 10 V, determine IS in the circuit drawn in Figure.

Explain commercial adcs and dacs, Explain Commercial ADCs and DACs? Ana...

Explain Commercial ADCs and DACs? Analog interface chips (AICs), like those in the Texas Instruments TLC32040 series, consist of all type of the analog components that explaine

What is digital system components, Q. What is Digital system components? ...

Q. What is Digital system components? The reason that digital systems are so inexpensive and yet so powerful is that they consist of very  large numbers of just a few building

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