[Help-gnucap] NTC and PTC

[Markus Feldmann]

Hi All,

anybody have got an NTC or PTC ?

I am not sure, but i found something thats looks like an NTC.
Is the following circuit a NTC ?

There does a ".circuit ..." option missing, i think?
*********************************************************
VC_RESISTOR1.CIR - VOLTAGE-CONTROLLED RESISTOR
*
* CONTROL VOLTAGE
VCONT   10      0       PWL(0MS 0.1V     100MS 1.0V)
RD10    10      0       1MEG
*
* CURRENT SOURCE
IS      0       1       DC      1
*
* VC RESISTOR
XVC1    1 0     10 0    VC_RES1_10K
*
*XVCR2  1 0     10 0    VC_RES2_10K
*RD2    1       0       100MEG
*
*XVC3   1 0     10 0    VC_RES3_10K
*
*
*** VC RESISTOR SUBCIRCUIT ********************
*       RESISTOR - 1,2     CONTROL - 4,5
*
.SUBCKT VC_RES1_10K     1 2     4 5
ERES    1       3       VALUE = { I(VSENSE)*10K*V(4,5) }
VSENSE  3       2       DC      0V
.ENDS
*
*
*** VC RESISTOR USING A CURRENT SOURCE *********
*       RESISTOR - 1,2     CONTROL - 4,5
*
.SUBCKT VC_RES2_10K     1 2     4 5
GRES    1       2       VALUE = { V(1,2) / (10K*V(4,5)) }
.ENDS
*
*
*** VC RESISTOR USING BASIC SPICE COMPONENTS ***
*       RESISTOR - 1,2     CONTROL - 4,5
*
.SUBCKT VC_RES3_10K   1  2   4  5
EOUT    1       3       POLY(2) (6,0) (4,5) 0 0 0 0 1
VSENSE  3       2       DC      0V
*
FCOPY   0       6       VSENSE 1
RRES    6       0       10K
.ENDS
*
.END
*********************************************************