Engineering How to Design a BJT Analog Circuit with Specific Transfer Characteristics?

AI Thread Summary
The discussion focuses on designing a BJT analog circuit with specific transfer characteristics, including parameters like gain, frequency, and input/output resistance. The proposed solution involves a three-stage circuit, with each stage serving distinct functions: achieving input resistance, gain, and output resistance. Participants are asked to identify appropriate modules for each stage to meet the design requirements. There is also a query regarding the realization of corner frequencies and potential adjustments to the gain parameters. The conversation emphasizes the need for clarity in circuit design and understanding of the underlying principles.
GGGboat
Messages
2
Reaction score
0

Homework Statement


hello, i need to design analog circuit that has a transfer curve as seen in the following image using resistors, capacitors,voltage, and BJT (with beta value of 100).
the parameters are:
A=75
f1= 21Hz
f2=21 KHz
M1=40
M2=-20

the circuit also need to have input resistance of Rin= 60 kilo-ohm and output resistance of 51 kilo-ohm.

Homework Equations


I posted this yesterday and it was deleted so first of all, let me apologize if i gave the impression that i was trying to get you guys to do my homework for me. i most certainly wasn't (sorry I'm just pretty clueless at this point).

does my 3-stages solution make sense(see part 3:solution attempt)? is it the right approach?
how do I know which of the following modules should I use for each stage?

The Attempt at a Solution


[/B]
i think the circuit should have 3 stages, each connected with a capacitor, where the first stage is for achieving the required input resistance, the second for the required gain, and the third is for the required output resistance.

(the first and last stages might also add some gain but it will be considered in the second stage)
 

Attachments

  • טבלת CBCECC.PNG
    טבלת CBCECC.PNG
    25.3 KB · Views: 552
  • transfer_curve.PNG
    transfer_curve.PNG
    2.9 KB · Views: 526
Physics news on Phys.org
f1 and f2 are the frequencies where the dotted lines are.
 
Well, which module(s) has/have the necessary gain?
Pick one or more and give us your first effort at a design.
 
M1=40
M2=-20

According to your diagram. one can get the impression that M1=20 and M2=-40 is required ?
Question: How do you intend - in principle(!) - to realize the corner frequencies?
 

Similar threads

Replies
29
Views
6K
Replies
23
Views
4K
Replies
5
Views
4K
Replies
6
Views
1K
Replies
4
Views
3K
Replies
12
Views
2K
Back
Top