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Re: [Help-gnucap] howto use different phase and frequency in sources for
From: |
al davis |
Subject: |
Re: [Help-gnucap] howto use different phase and frequency in sources for transient analysis? |
Date: |
Mon, 19 Oct 2009 17:54:43 -0400 |
User-agent: |
KMail/1.12.2 (Linux/2.6.26-1-amd64; KDE/4.3.2; x86_64; ; ) |
On Saturday 17 October 2009, Rubén Gómez Antolí wrote:
> I need to specify different phases in sources in this way:
>
> I1 phase=-10 freq=60
> I2 phase=150 freq=180
> I3 phase=-56 freq=300
>
> SIN sources not admit phase option.
> I try with generator function:
> .gen ampl=10 phase=-10 freq=60
> I1 n1 n2 generator(1)
> .gen ampl=15 phase=150 freq=180
> I1 n2 n3 generator(2)
> etc.
>
> but I see that generator don't work in this way.
You are correct .. It don't work in this way.
> I look for in the net without sucess. I see that in AC
> analysis is possible, but I need to do in transient
> analysis.
>
> There are anyway to do this?
What is the meaning of phase in transient analysis, when you
have different frequencies? The phase relationship between them
is always changing. I suppose it could be the phase at time=0,
and translate to delay.
What you do have is "delay". You can get what you want with SIN
source, specifying a delay in seconds.
try delay={(phase/360)/frequency}