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
*********************************************************
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