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Subject: Re: two mosfet added to counter slew rate

Date: 09/01/03 at 10:25 PM
Posted by: Russ Kincaid
E-mail: russlk_nospam[AT55]yahoo.com (replace [AT55] with @ to reply)
Message Posted:

In Reply to: Re: two mosfet added to counter slew rate posted by Jason on 09/01/03 at 12:14 AM:

This is becoming a puzzle, but I think you are correct, if current flows thru Q3 it has to also go thru Q5 and Q11. Therefore: Id11=Ibias+Id12+Id13. I don't know how to compute Id13. Since Id4=Id11 and Id5=Id13+Id4 then Id5=Ibias+Id12+2*Id13.

Calculating the current thru Q6: Id3=Id11 and Id6=Id3+Id12-2*Ib
Id6=Ibias+2*Id12+Id13-2*Ib

Since both Id6 and Id5 contain Id13, I guess one could say it is immaterial and leave it out of the equation?


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