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PSPICE ABM question

M

Mathias

Jan 1, 1970
0
Dear ng,

Is there a way to build a programmable (nonlinear) resistor in pspice?
I currently use an ABM1 block as an input-voltage-dependent voltage
source. This works fine on the output side, but it doesn't "consume" any
current on its input side as a real resistor would.

Thanks for any suggestion,
Mathias
 
J

Jim Thompson

Jan 1, 1970
0
Dear ng,

Is there a way to build a programmable (nonlinear) resistor in pspice?
I currently use an ABM1 block as an input-voltage-dependent voltage
source. This works fine on the output side, but it doesn't "consume" any
current on its input side as a real resistor would.

Thanks for any suggestion,
Mathias

You should be using GVALUE or GTABLE. Then you tie outputs back to
inputs to get it to "consume" current.

...Jim Thompson
 
M

Mathias

Jan 1, 1970
0
Hi Jim,

i think i could use it in the "native spice text input file", but I'm
lost when trying to use it in pspice's Schematics graphical layout tool.
Maybe I'd have to define a specific "part" in a textfile and import it
into Schematics?

Thanks,
Mathias
 
J

Jim Thompson

Jan 1, 1970
0
Hi Jim,

i think i could use it in the "native spice text input file", but I'm
lost when trying to use it in pspice's Schematics graphical layout tool.

What version are you using? PSpice Schematics or Capture (gag me with
a spoon ?:)

I don't remember now when GVALUE first appeared.

What happens if you "Get Part, GVALUE" ?
Maybe I'd have to define a specific "part" in a textfile and import it
into Schematics?

Thanks,
Mathias

You can make almost anything up using .SUBCKT definition and POLY
notation, if your version lacks ABM's....

I'm slow this morning, you do say "ABM1", so I'm sure you have GVALUE.

GVALUE/EVALUE devices accept Algebraic expressions.


...Jim Thompson
 
M

Mathias

Jan 1, 1970
0
No! It's me who gets sleepy in the evening, you seem already bright awake ;)
I always prefiltered for parts including "ABM", no wonder I couldn't
find the GVALUE.

Thanks a lot!
Mathias
 
J

Jim Thompson

Jan 1, 1970
0
No! It's me who gets sleepy in the evening, you seem already bright awake ;)
I always prefiltered for parts including "ABM", no wonder I couldn't
find the GVALUE.

That pre-filtering can turn into a nuisance, not returning easily to a
full list :-(
Thanks a lot!
Mathias

I awoke 5.5 hours ago... it's just now lunch time here ;-)


...Jim Thompson
 
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