Re: [Ngspice-devel] subckt power laws illegal ?

[Hitoshi T. <HDA...@ni...>]

Hi,

 I confirmed that the power function in "asrc" does not work well.
The test ciruit is as follows.

Title: Power function
B1 2 0 v=10^v(1)
* voltage source and dummy loads
V1 1 0 1
R1 1 0 1k
R2 2 0 1k
*
.dc V1 0 3.5 0.01
.plot v(2)
.end

It seems a bug from Spice3.
However, it is working well in SpiceOpus.
Where did SpiceOpus improve?

Regards,
Hitoshi

----- Original Message ----- 
From: "Matt Flax" <flatmax@Matt.Flax>
To: <ngs...@li...>
Sent: Monday, June 27, 2005 12:55 AM
Subject: [Ngspice-devel] subckt power laws illegal ?


> Hello,
> 
> Am I doing something wrong with non-linear voltage sources ???
> 
> Can anyone verify that this circuit = 10 V alwayse ?
> It doesn't work for me.
> 
> ================== BEGIN test.cir ======================
> * circuit to test power functions in subcircuits
> * this circuite will try to implement v(2) = 10^v(1)
> 
> * define a subcircuit with a power math function in it.
> .subckt test 1 2
> Bout 2 0 v=10^v(1)
> .ends test
> 
> * set up a constant to create 10^Vin
> vin 1 0 1
> 
> Xtest 1 2 test
> 
> .control
> *tran 0.1 3.5
> ac 
> plot v(2)
> .endc
> .end
> ==================== END test.cir
> 
> thanks
> Matt
> -- 
> http://www.flatmax.org
> 
> Public Projects :
> http://sourceforge.net/search/?type_of_search=soft&words=mffm
> 
> 
> 
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