# please find the values for me

Discussion in 'General Electronics Chat' started by gupteswarsahu, Aug 1, 2006.

1. ### gupteswarsahu Thread Starter New Member

Aug 1, 2006
3
0
i want to design a two stage ce amplifier with following specification
A1=30 gain of first stage
A2=20gain of second stage
Rs=50 ohm,RL=1.5kohm
bandwidth=20 Hz-200KHz
beta value=100-200
assume Ie=Ic,Ve=0.1Vcc,
to find the values of R1,R2,Rc,Re,Cin,Ce,Cout?

2. ### Dave Retired Moderator

Nov 17, 2003
6,960
146
Could you post up your attempts at finding the values? That way we can point you in the right direction.

Dave

3. ### gupteswarsahu Thread Starter New Member

Aug 1, 2006
3
0
To design a two stage RCcoupled CE amplifier
specifications-gain of FIRST stage (A1)=30,GAIN OF SECOND STAGE(A2)=20
function generator sourse resistance(Rs)=50ohm,RL=1.5kohm
bandwidth=20hz-20khz
assuming beta=100-200
assumptiom i made=Q POINT CLOSE TO THE MIDDLE OF THE LOAD LINE
Ve=0.1Vcc,Vc=0.5Vcc,Ic=Ie,Vcc=12volts
to design the circuits

Aug 28, 2006
2
0

Aug 28, 2006
2
0

6. ### Papabravo Expert

Feb 24, 2006
10,340
1,850
In a word -- NO! You get nothing from me without showing some effort.
You might start by posting a schematic so we can figure out where R1 and R2 are!
Also why are two different people asking for this?

7. ### Dave Retired Moderator

Nov 17, 2003
6,960
146
I'm in agreement with Papabravo on this one, you need to try and help yourselves here, and posting a schematic will certainly be a start. Also don't just repost the original question!

People who don't make an effort tend not to get the help they seek.

Dave

8. ### hgmjr Moderator

Jan 28, 2005
9,030
214
I concur with papabravo and dave in urging you to take the first step toward arriving at a solution for your problem by sketching a schematic of the circuit configuration of your amplifier. You can begin by clearly labeling the components in your schematic with their reference designations. This will start the ball rolling by forming the basis for an exchange of questions between yourself and those members with suggestions on how you might proceed.

The schematic can be hand drawn and then scanned into pdf format or whatever file format you have convenient access to.

hgmjr

Feb 24, 2006
10,340
1,850

Jan 28, 2005
9,030
214
11. ### Dave Retired Moderator

Nov 17, 2003
6,960
146
We've seen his weakness!

Still without a schematic this is a dud-one.

Dave