The discussion revolves around the concept of "symmetric operation" in the context of designing an H-biased common emitter amplifier, particularly focusing on how to select resistors and illustrate the load line and operating point on characteristic curves. Participants explore the implications of symmetric operation for amplifier performance, including its relation to input signal handling and distortion.
Participants do not reach a consensus on the precise meaning of "symmetric operation," with multiple competing interpretations presented throughout the discussion.
There are unresolved assumptions regarding the definitions of symmetric operation and its implications for amplifier design. The discussion reflects varying levels of understanding and interpretation among participants.
My guess is that it means it should be able to accommodate inputs that swing both above and below the biased point by the same extent before clipping/distortion shows.physkim said:Homework Statement
For the characteristic curves shown below, select resistors for an H-biased common emitter amplifier for symmetric operation. Show the load line and operating pointing on the graph
Homework Equations
What does it mean by "symmetric operation"?
NascentOxygen said:My guess is that it means it should be able to accommodate inputs that swing both above and below the biased point by the same extent before clipping/distortion shows.
Yes, so it is best placed to amplify AC.physkim said:so, you mean http://www.electronics-tutorials.ws/amplifier/amp_2.html the graph under the title "Output Characteristic Curves" that's a symmetric operation?
As NascentOxygen "symmetry" stands for nerither distortion,nor clip, which means Q point should be lying in the midpoint of load line.Spyda said:I take it you're also in circuit theory with Ens... super unclear assignment (as usual). Symmetric means that there are both positive and negative power supply rails (rather than just a positive rail and a ground). I haven't figured out the rest of the problem yet either. Good luck.
edit: one of my friends is saying that something else was meant by symmetric. I'm not even sure anymore, sorry.
Hey, Thanks for the help. I think I know what to do next !NascentOxygen said:Yes, so it is best placed to amplify AC.