Id vs Ids

[Manjari]

i understand that when checking the finaltime output info, the value of Id
is the current entering(or leaving) the drain terminal and that Ids is the
current flowing between drain and source. While simulating, I see the
transistors which are in triode region have Ids>Id. How is that possible
and what does it mean?

Thanx

 

[Gerry Vandevalk]

A non-linear device has more than 2 terminals.
Ids is the current that enters the drain and leaves the source.
Id is the total current entering the drain.
In certain models/modes/ranges/values, the drain current can be shunted to
the bulk node or sent out the gate node.

Note that sign is relative and if current is leaving the drain (as most
mosfets work in both directions .) then the signs are reversed.

I ales noted that you said Ids>Id and not Ids>>Id ... so this is normal.
-- Gerry


"Manjari" <agarwalmanjari@gmail.com> wrote in message
news:7b06192df3b93bd875f549b1e0e0fece@localhost.talkaboutcad.com...

i understand that when checking the finaltime output info, the value of Id
is the current entering(or leaving) the drain terminal and that Ids is the
current flowing between drain and source. While simulating, I see the
transistors which are in triode region have Ids>Id. How is that possible
and what does it mean?

Thanx