Re: [Qucs-bugs] Different simuresults between Qucs 15 and 16?

[Unknown <chl...@gm...>]

Hello Stefan,

it turned out that this problem is caused by a transformer which is
inside the circuit. however i suppose there is already a countermeasure:

Message: 6
Date: Sun, 3 Apr 2011 15:04:09 +0200
From: "Stefan Jahn" <st...@gr...>
Subject: Re: [Qucs-help] Ideal Transformer Does Not Work for Qucs
        0.0.16 on       Windows
To: "Schepers, Matthew" <ms...@sa...>


Can you please tell me wheather this fix is already available in a
recent SVN snaphsot? If so i could do a check.

Best regards & Thanks Markus



Am Freitag, den 08.04.2011, 12:36 +0200 schrieb Stefan Jahn:
> Am Sa, 19.03.2011, 23:18 schrieb Unknown:
> 
> > Hello,
> 
> hi!
> 
> > i just gave it a try and made a "make & make install" of qucs 16 and ran
> > a schematic (transientsimu) from an earlier 15 version (a chopper
> > circuit). with qucs16 the result is incorrect (the chopper does not
> > oscillate). if i downgrade back to qucs 15 (make & make install with
> > qucs 15) and reran the same schematic the result is correct (see e.g.
> > mp1.vt).
> >
> > I am not sure but feel it may be rather a bug than convergence problem?
> 
> Could you provide the schematic showing the bug please?
> 
> Best regards, Stefan.
>