Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronic Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

why the gain is wrong in this close loop?

Status
Not open for further replies.

shanmei

Advanced Member level 1
Joined
Jul 26, 2006
Messages
424
Helped
8
Reputation
16
Reaction score
8
Trophy points
1,298
Location
USA
Activity points
4,446
1.png

From the two inputs, we know the difference voltage is Vin-Vout, after amplifying A, Vout=(Vin-Vout)*A, Vout(1+A)= Vin, so Vout/Vin=1/(1+A). When A is infinite, Vout/Vin=0? it is wrong , why? Thanks.
 

shanmei

Advanced Member level 1
Joined
Jul 26, 2006
Messages
424
Helped
8
Reputation
16
Reaction score
8
Trophy points
1,298
Location
USA
Activity points
4,446
Thanks. Dominik Przyborowski.
 

Status
Not open for further replies.
Toggle Sidebar

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top