stability fundamental--- help needed

Status
Not open for further replies.

pbs681

Full Member level 3
Joined
Aug 19, 2004
Messages
173
Helped
15
Reputation
30
Reaction score
3
Trophy points
1,298
Activity points
1,278
hi all,

need help to answer below questions:

1) for stability analysis, which gain that we plot: open loop gain or loop gain?

2) Is phase margin and UGF will change after we close the loop?

Thanks
 

1. Loop gain (A*beta)., Only this reveals the PM, GM, UGB in all cases
2. PM and UGF will be same., as you have accounted for the closed-loop gain in the beta term
 

Status
Not open for further replies.
Cookies are required to use this site. You must accept them to continue using the site. Learn more…