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[Help-gnucap] how to use LMC6482A spice model with gnucap?


From: John Steele Scott
Subject: [Help-gnucap] how to use LMC6482A spice model with gnucap?
Date: Mon, 13 Feb 2006 13:42:33 +1030
User-agent: KNode/0.9.3

Hi,

I have made a small netlist to simulate an active rectifier which uses
National Semiconductor's LMC6482A. The model is available from
<http://www.national.com/models/spice/LM/LMC6482A.MOD>.

When I try to simulate my circuit, I get the following errors:

*//////////////////////////////////////////////////////////////////////
G4  98 16 POLY(2) 1 49 2 49 0 2.812E-8 2.812E-8
                ^ ? need 1 more nodes
.MODEL MOSFET PMOS(VTO=0 KP=1.842E-3)
                   ^ ? no level specified, using 1
M2.X_U2, MOSFET
model and device parameters are incompatible
M1.X_U2, MOSFET
model and device parameters are incompatible
M2.X_U1, MOSFET
model and device parameters are incompatible
M1.X_U1, MOSFET
model and device parameters are incompatible

I would appreciate it if someone could tell me what changes need to be made
to simulate this model in gnucap version 0.34. I imagine it's not so
difficult once you know how.

In case it matters, the netlist which I am using this circuit in is below.
This is based on an article at <http://www.edn.com/article/CA6250014.html>
"Precision full-wave signal rectifier needs no diodes".

/home/john/spice/rectifier-edn.oregano
*----------------------------------------------
*       GNUCAP - NETLIST
.options OUT=120 
*----------------------------------------------
R_R4 6 4 2k 
V_Vbatt 9 0 dc 3.6 
.include /home/john/spice/lmc6482a.mod 
V_Vin 3 0 dc 0.0 ac 0.0 sin(0.0 1.1 50 0 0) 
R_R1 3 1 1k 
R_R2 6 0 1k 
R_R3 3 6 2k 
X_U2 5 6 7 0 4 LMC6482A/NS 
R_R5 1 0 1k 
X_U1 1 5 2 0 5 LMC6482A/NS 
*----------------------------------------------
.print tran  v(8) v(5) v(3)
.tran 0 0.2 0.002
.print op v(nodes)
.op
.end

cheers,

John





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