Recent content by Mitchy190

I'm still struggling with this question :( I don't know where to start, now I have worked out the KCL equation and KVL, I don't know what to do with them?

Thanks a lot man (:

This is what I mean:

Okay thank you, i just assumed that as when you have two transfer functions connected in series you multiply them together to get the overall function. What does this analogy actually represent then? Does it represent two circuits connected in series and assumes no loading effect? Or something...

I'm trying to work out the Transfer function for the 2nd order RC circuit in the attachment below: I can't seem to get the right answer :( circuit: My answer: Please see attachment for my attempt and the relevant information:

Okay thanks! (: how would changing those values make the circuit more stable??

I did yes sorry. And rude man, below shows a picture of the input capacitor I used: If i look at my graph where it levels out, the gain is approximately equal to 44db. Does this therefore mean my experimental value agrees with my theory? As 20log(164) = 44db?

Awesome (: So how does the number 164 relate to anything? The gain changes with frequency, so I do not understand how the number 164 is equal to the differential gain. :(

I will have to tell you that tomorrow as I am not in the lab today. Great (: The attachment below shows my method and measurements:

Thats how i worked out the value Cin though by calculating the input impedance of the circuit. And nope its not polar.

I also used in the wrong Vin in my workings out, here is the correct version of the measured frequency response when V2 is grounded.

Just by comparing the two graphs.. if i was to multiple the 'offset' by the rc network graph i would get the same graph as the one i measured. Yep the break should be around 100hz as that's what i designed the circuit to do. But I had to use E12 capacitors so its not exactly a 100hz but close...

Hey! I was wondering, how would I predict the frequency response of the circuit below when v2 is grounded? I have actually measured the response which is also shown below, v2 is grounded. I know the input impedance of the circuit and therefore I calculated the frequency response of the...

Now I feel stupid haha! Thanks though (:

Hey, thanks for taking the time to look ay my post (: I have attached a file which shows the question I am stuck on, and my attempt at working it out. My problem is the answer I get, is different to what my Lecturer gets (shown in the attachment). He worked it out a different way to me, he...