Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

nonlinear distorsion in amplifiers

Status
Not open for further replies.

p11

Banned
Joined
Jan 25, 2014
Messages
177
Helped
0
Reputation
0
Reaction score
0
Trophy points
16
Activity points
0
what is nonlinear distorsion in amplifiers , plz explain me in simple words ........
 

crutschow

Advanced Member level 5
Joined
Feb 22, 2012
Messages
3,843
Helped
916
Reputation
1,830
Reaction score
900
Trophy points
1,393
Location
L.A. USA Zulu -8
Activity points
21,700
It means that the amplifier has a non-linear relationship between the input signal and the output signal.
For example the gain at a lower signal voltage might be slightly different at a higher voltage.
Say the input was a sawtooth with straight edge ramp, the output would then be a sawtooth with a curved ramp.
That's nonlinear distortion.
 
Last edited:

SunnySkyguy

Advanced Member level 5
Joined
Sep 26, 2007
Messages
6,743
Helped
1,675
Reputation
3,348
Reaction score
1,644
Trophy points
1,413
Location
Richmond Hill, ON, Canada
Activity points
50,732
Non-linearity depends on symmetry of AC signal. If a symmetrical signal goes IN you expect it to be the same going out. Normally beta reduces when Vce tends to get near 2V and lower then compressing the peak and causing harmonic and other distortion.

In RF the test is called 3rd order intercept, which you may look up if interested.
In Audio they use total harmonic distortion or %THD.
 

Borber

Advanced Member level 5
Joined
Dec 31, 1999
Messages
1,602
Helped
235
Reputation
472
Reaction score
111
Trophy points
1,343
Location
on third flor
Activity points
11,862
Amplifier is linear and without nonlinear distorsion while ratio Vout/Vin=C. If C is changing with Vin then nonlinear distortion exist.
 

Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top