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

How a transistor in common-base configuration amplify signal, Q. With a cir...

Q. With a circuit diagram explain how a transistor in common-base configuration amplify signals.  The common-base terminology is derived from the fact that the base is common t

Explain the meaning of synchronous counters, Explain the meaning of Synchro...

Explain the meaning of Synchronous Counters? In the synchronous counters the clock inputs of all the flip-flops are connected together and are triggered by the input pulses, the

Any number system to decimal conversion , Any number System  to Decimal Co...

Any number System  to Decimal Conversion To convert a number in any number system to its  equivalent  decimal number, simply multiple each  digit of the number  with its  posi

Control systems, why open loop system is stable and why degree of stability...

why open loop system is stable and why degree of stability varies in closed loop system

Elementary induction machines, Elementary Induction Machines In the dis...

Elementary Induction Machines In the discussion that followed Equation, the third possiblemethod of producing constant torque was to cause the mmf axes of stator and rotor to r

Can you explain noninverting amplifier, Q. Can you explain Noninverting Amp...

Q. Can you explain Noninverting Amplifier? It is called "noninverting" because there is no sign inversion. A typical circuit is shown in Figure. With a finite op-amp gain Ao,

Power control - motor control , Power Control A chopper converts  fix...

Power Control A chopper converts  fixed  de input voltage to a controllable dc output voltage. It is  the single  stage dc to dc conversion device. It is a high  speed  on/ of

Game theory, an example and code for bargaining problem

an example and code for bargaining problem

What does the eu do, Execution Unit receives program instruction codes and ...

Execution Unit receives program instruction codes and data from BIU, implements these instructions and store the result in general registers.

Explain this phenomenon, (a) Design a 2 nd  order Sallen and Key low pass ...

(a) Design a 2 nd  order Sallen and Key low pass active filter with the following characteristics: Nominal Cut-off Frequency: 1.6 kHz Variable Gain: 0 to 7.5 dB You may a

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