• Support PF! Buy your school textbooks, materials and every day products Here!

RC networks

  • Thread starter bobbyk
  • Start date
  • #1
39
0
This is not homework, but a question I have posed for myself.

In a linear, passive, 3-terminal RC network for sinusoidal voltage input how many resistors and capacitors are required to give an open-circuit voltage gain of 2?

I've found some very complicated networks, but I'd like to find one with the fewest number of R's and C's.

Thanks for any help.
 

Answers and Replies

  • #2
Averagesupernova
Science Advisor
Gold Member
3,554
566
This is not homework, but a question I have posed for myself.

In a linear, passive, 3-terminal RC network for sinusoidal voltage input how many resistors and capacitors are required to give an open-circuit voltage gain of 2?

I've found some very complicated networks, but I'd like to find one with the fewest number of R's and C's.

Thanks for any help.
No combination of resistors and capacitors without some active device such as a transistor will exhibit any gain at all.
 
  • #3
berkeman
Mentor
56,634
6,531
This question is still coursework, so I've moved the thread to Homework Help.

bobbyk, do you understand what ASN is saying? How can a passive network have a gain > 1? What do you need to add to get a gain > 1?
 
  • #4
39
0
Yes, I understand what ASN is saying and he is wrong! You don't need to add anything to
get a gain > 1. Even very simple passive RC networks have open-circuit voltage gains > 1.

But I'm trying for a gain of 2.
 
  • #5
The Electrician
Gold Member
1,246
152
There was a thread on the Usenet group alt.binaries.schematics.electronic on 10/10/07 with the subject:

Epstein paper--Synthesis of Passive RC Networks with Gains Greater than Unity

One of the responders posted this circuit which seems to be able to give gains much greater than just 2. It has practical problems, however.

http://img2.freeimagehosting.net/uploads/8aad345024.png [Broken]
 
Last edited by a moderator:
  • #6
39
0
Thanks so much! This Is exactly the type of thing I'm looking for!
 

Related Threads for: RC networks

  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
1
Views
726
  • Last Post
Replies
4
Views
1K
  • Last Post
Replies
3
Views
2K
  • Last Post
Replies
3
Views
1K
  • Last Post
Replies
1
Views
979
  • Last Post
Replies
5
Views
763
  • Last Post
Replies
0
Views
867
Top