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In a Passive Low pass filter, it is known that the output voltage will be decreased.By making it an active lowpass filter: 1.) What benefits could adding a buffer(voltage follower) have? 2.) What benefits could adding an op amp with amplification have?  3.) Does the Active low pass filter be of any help when the low pass filter circuit is to be connected to another gaining stage?

In a Passive Low pass filter, it is known that the output voltage will be decreased.By making it an active lowpass filter: 1.) What benefits could adding a buffer(voltage follower) have? 2.) What benefits could adding an op amp with amplification have?  3.) Does the Active low pass filter be of any help when the low pass filter circuit is to be connected to another gaining stage?

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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LOW PASS FILTER

>In a Passive Low pass filter, it is known that the output voltage will be decreased.By making it an active lowpass filter:

1.) What benefits could adding a buffer(voltage follower) have?

2.) What benefits could adding an op amp with amplification have? 

3.) Does the Active  low pass filter be of any help when the low pass filter circuit is to be connected to another gaining stage?

 

Vin Low Pass Filter !fo= R M 2TRC Non-inverting unity amplifier A₁ = 1 Vout
Transcribed Image Text:Vin Low Pass Filter !fo= R M 2TRC Non-inverting unity amplifier A₁ = 1 Vout
Vin Low Pass Filter Stage R3 m high frequencies C1 low frequencies ww R1 Amplification Av www R2 Vout
Transcribed Image Text:Vin Low Pass Filter Stage R3 m high frequencies C1 low frequencies ww R1 Amplification Av www R2 Vout
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