What is meant by filter? What are the different types of filters?

The output of the rectifier pulsating in nature, it consists of a desired DC component of voltage and unwanted ripple components. These ripple components are removed by placing filter circuit at the output of the rectifier.

Types of filters:
1. capacitor filter
2. series inductor filter
3. LC filters of following two types
(a)capacitance input filter
(b)inductance unput filter
4.RC filters.

• Aug 1st, 2009

Filters are the components of a circuit which remove distortion or ripples.
Types of filters :
1. High pass filters
2. Low pass filters
3. Band pass filters

• Aug 5th, 2009

Filters are used to remove the unwanted or undesirable components of a output
waveform, so the basic work of filters is to smoothen the output.
From electrical devices we
are not getting perfect sinusoidal output, it contains a DC component i.e.
ripples, harmonic distortions etc. so filters are used to rectify these
components.

• Nov 24th, 2009

An electrical circuit which is used to remove unwanted signals from the output of a system is called a filter. Filters can be classified into many types based on how they are built, the purpose they serve, the range of filtering etc.
Typically, they are classified as
1) Low Pass filters(allows frequencies upto a cut-off freq)
2) High Pass filters(allows frequencies above a cut-off freq)
3) Band Pass filters(allows input frequencies in a specified range)
4) Band Reject filters(rejects frequencies in a specified range)

Shashikant jagtap

• Oct 19th, 2013

In hwr & fwr what is the function of filters?

ROBIN DAS

• Nov 1st, 2013

In signal processing, especially electronics, an algorithm or device for removing part(s) of a signal:

Filter (signal processing), especially,
Electronic filter, an electronic circuit which processes signals, for example to remove unwanted frequency components
Digital filter, a system that performs mathematical operations to reduce or enhance certain aspects of a signal
Analogue filter, a basic building block of signal processing much used in electronics, see Passive analogue filter development

kalaivani

• Nov 29th, 2013

filter is used to remove the unwanted signals in the circuit

krishnakant

• Jul 30th, 2014

The o/p of the rectifier ckt is not pure dc its pulsating in nature to make the o/p pure dc smooth dc the filter circuit is connected to the o/p of rectifier
Not only in the rectifier ckt but where ever we want to remove unwanted signal from the band filters a used accordingly. The types of filters are RC,LC,CAPACITOR,SERIES INDUCTOR ETC on the basis of choosing desired signal band pass and band reject filters are used they are low band pass filter, high band pass filters etc

chinki

• Sep 15th, 2014

filter is remove unwanted signal not using the output signal.

Sonu Kumar

• Jun 17th, 2015

An electrical circuit which is used to remove unwanted signals from the output of a system is called a filter. Filters can be classified into many types based on how they are built, the purpose they serve, the range of filtering etc.
Typically, they are classified as
1) Low Pass filters(allows frequencies upto a cut-off freq)
2) High Pass filters(allows frequencies above a cut-off freq)
3) Band Pass filters(allows input frequencies in a specified range)
4) Band Reject filters(rejects frequencies in a specified range)

Varun Bhardwaj

• Jul 3rd, 2015

It is a used to remove unwanted noise and unwanted signals in the electrical as well as electronics circuit.
The output is good and stable.

Rubi Gupta

• Nov 3rd, 2015

A filter is a device that selectively sorts signals and passes through a desire range of signals while suppressing the others. this kind of filter is used to suppress noise or separate signal in to bandwidth channels.

L.baalagajakreedan

• Feb 25th, 2016

An electrical circuit which is used to remove unwanted signals from the output of a system is called a filter. Filters can be classified into many types based on how they are built, the purpose they serve, the range of filtering etc.
Typically, they are classified as
1) Low Pass filters(allows frequencies upto a cut-off freq)
2) High Pass filters(allows frequencies above a cut-off freq)
3) Band Pass filters(allows input frequencies in a specified range)
4) Band Reject filters(rejects frequencies in a specified range)

• Jul 28th, 2016

Your explanation is very clear. Thank you. And I need some clarification in diodes, resistor, capacitor...Can you send me the properties of above elements? I am a EEE student.

Dharam singh meena

• Aug 5th, 2016

A network designed to attenuate certain frequencies but pass others without attenuation is called a filter.

shahzaib bashir

• Dec 5th, 2016

Filter is a device which is used to eliminate noise from any voltage signal, not specifically for RF signal.

• Jan 27th, 2017

Your explanation is very clear. Thank you. And I need some clarification in diodes, resistor, capacitor...Can you send me the properties of above elements? I am a EEE student.

Jackline paul

• Feb 12th, 2017

Thanks for the answers on filters

Prem kumar mendem

• Mar 17th, 2017

Filter is simply known as removing all noise or unwanted signal in the circuit

rajesh

• Apr 7th, 2017

Filter is a device used to pass the required frequencies and eliminates the unwanted frequencies.
Basically 2 types Filters
1. Active Filters (uses BJTS, FETS ,OP-amps)
2. Passive Filters (uses R,L,C components)
by using these both kind of filters we can design All types of filters (Low Pass, High Pass, Band Pass, Notch)

Deepali Goyal

• Jun 10th, 2017

Filter is used to select only a particular range of frequencies. Filters are basically are of two types
1. Active Filters
2. Passive Filters

gajanan ghawale

• Jun 27th, 2017

In order to remove DC component which are left behind the Rectifier circuit output, the circuit consist combination of resistor capacitor or Inductor is known as filter