Symmetric Operation in Circuits

[physkim]

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"?

The Attempt at a Solution

H-biased common emitter amplifier means transistor is biased by voltage divider transistor biasing ?

 

[Spyda]

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.

 

[NascentOxygen]

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"?

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]

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.

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?

 

[NascentOxygen]

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?

Yes, so it is best placed to amplify AC.

 

[physkim]

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.

As NascentOxygen "symmetry" stands for nerither distortion,nor clip, which means Q point should be lying in the midpoint of load line.

 

[NascentOxygen]

A google search on symmetrical operation supports what I suggested.

 

[physkim]

Yes, so it is best placed to amplify AC.

Hey, Thanks for the help. I think I know what to do next !