hi,
Post your attempt at answering, we can then help.
E

 

I haven't I can't really get my head about where to start

 

hi,
Post your attempt at answering, we can then help.
E

I havent started yet, cant get my head around what values or what type of coupling i should go for

 

Welcome to AAC!

Take a close look at your specifications. There are many hidden hints there. 2, 3, and 6 are important design criteria.

4 is confusing. There is only one way to achieve 0Hz low-frequency cutoff.

Since this is a multi-stage design, think three stages,
(1) preamp
(2) driver
(3) power output

 

Welcome to AAC!

Take a close look at your specifications. There are many hidden hints there. 2, 3, and 6 are important design criteria.

4 is confusing. There is only one way to achieve 0Hz low-frequency cutoff.

Since this is a multi-stage design, think three stages,
(1) preamp
(2) driver
(3) power output

Alright I will try now

 

View attachment 269714

Hi and welcome to the forum,

You have to design a multi stage amplifier by tonight and apparently you never did this before. Doesnt sound possible.

You could start with a single stage and see how far you get.
Also, you did not state what kind of parts you can use such as transistors, operational amplifiers, etc. To design this you have to state what parts you can use.

 

Yes I honestly have not its for this module I have, but I cant really comprehend it, it is on npn transistors

 

Yes I honestly have not its for this module I have, but I cant really comprehend it, it is on npn transistors

Sorry, sounds like it's going to be a rough semester.

 

Yes I honestly have not its for this module I have, but I cant really comprehend it, it is on npn transistors

Oh ok so can you design a single transistor amplifier with specs whatever you want them to be for now?
Let's say 1 volt AC input and 2 volts ACoutput. Can you do that?

 

LOL Thank god im not doing it again

 

LOL Thank god im not doing it again

Hi,

Doing what again?

 

LOL Thank god im not doing it again

If you're not doing it and we're not doing it, then who do you suppose is going to do it?
Lets start with the gain. If you have 20 mV P-P and a gain of 40 dB, what will the peak to peak output voltage be?

 

Oh ok so can you design a single transistor amplifier with specs whatever you want them to be for now?
Let's say 1 volt AC input and 2 volts ACoutput. Can you do that?

I am not sure

 

Hi,

Doing what again?

Mechatronics Engineering

 

I am not sure

You did not really design this. It looks like you just threw components onto a schematic without understanding anything. This design won't work because the transistor Q1 has no DC bias. A usual starting point is to put the quiescent point (Q-point) at Vcc/2 or +6 volts. How could you do that? Here is how you can do that, but that is not enough because your output is only 6 mV P-P. You have not made an amplifier, but an attenuator. Do you know why?

The answer is that the components which determine the gain were chosen randomly without the benefit of being computed to achieve the desired result.

 

This design won't work because the transistor Q1 has no DC bias. A usual starting point is to put the quiescent point (Q-point) at Vcc/2 or +6 volts. How could you do that?

I have no clue, how?

 

I have no clue, how?

for a dc bias, is it that you add a resistor next to R1

 

If you're not doing it and we're not doing it, then who do you suppose is going to do it?
Lets start with the gain. If you have 20 mV P-P and a gain of 40 dB, what will the peak to peak output voltage be?

2V

 

for a dc bias, is it that you add a resistor next to R1

No, See edited post #16