BJT Amplifiers

[Full]

Hello everybody,
I study basic BJT amplifiers ,

but there is problem in AC analysis circuit in figure 6.33 very difficult for me

please can you help me how I can see the circuit and analysis?

thanks,

 

[cowboybob]

Welcome, Full, to ETO!

Looks like homework....

Try this:

**broken link removed**

page 68.

 

[audioguru]

A transistor will not work with its collector resistor connected to ground like that.

 

[Full]

Welcome, Full, to ETO!

Looks like homework....

Try this:

**broken link removed**

page 68.

thanks sir,
thank you for homework...
I not understand more for this homework because I steady first time amplifier......
please can you explain how I can analysis same this (in red square )?

 

[Full]

I have small question, what different between (gm v-bi) &(B ib )?
what meant by transconductance ?
when I use (gm v-bi) and (B ib ) in circuit?
is mean the (gm v-bi) = (B ib ) same in calculation?
thanks

 

[crutschow]

A transistor will not work with its collector resistor connected to ground like that.

The small signal AC model is a linear model that does not consider DC biases. Thus the collector resistor is connected to (AC) ground for the purpose of the analysis.