On Wed, 15 Apr 2015 14:50:31 -0700, John Larkin
wrote:
On Wed, 15 Apr 2015 13:42:45 -0700, Jim Thompson
wrote:
CompliantParts.zip, on the Device Models & Subcircuits Page of my
website, has been updated to include subcircuit representations...
making it easier to import into LTspice...
Spice devices IDC, F and G are replaced by devices IDCLC, FLC and GLC
These current-output devices exhibit real-world behavior... they will
not pull their outputs to negative infinity. They stop pulling
current at a voltage defined by COMPLIANCE with a transition to zero
current over a span defined by TRANSITION.
Negative resistance?
No. As the headroom reduces so does the available current drive...
just like a real current sink.
All derivatives exist and are continuous... thus no convergence
problems.
...Jim Thompson
LT Spice allows a current source to have the "active load" attribute,
where it can't generate power. There is also a "load" component, which
looks like a current source to me, just a different symbol.
...Jim Thompson
--
| James E.Thompson | mens |
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