## [Qucs-help] Circuit RC

 [Qucs-help] Circuit RC From: Jonas - 2008-02-24 00:50:31 Attachments: rc.sch ```Hello I am using the last cvs version of qucs with ubuntu hardy. I did a simple RC circuit that runs with the AC simulation. With the source V2 it works, but I would like to replace V2 by the source V3 which generate a triangular signal. When I use the source V3, Uin and Uout remain to 0V with the AC simulation. Is there a way to do it? I also find a bug with the equations a=45*sqrt(2)*Uout.v/Uin.v b=90-a When a equals 45, then b must equals 45, but it equals 65 Bye Jonas ```

 [Qucs-help] Circuit RC From: Jonas - 2008-02-24 00:50:31 Attachments: rc.sch ```Hello I am using the last cvs version of qucs with ubuntu hardy. I did a simple RC circuit that runs with the AC simulation. With the source V2 it works, but I would like to replace V2 by the source V3 which generate a triangular signal. When I use the source V3, Uin and Uout remain to 0V with the AC simulation. Is there a way to do it? I also find a bug with the equations a=45*sqrt(2)*Uout.v/Uin.v b=90-a When a equals 45, then b must equals 45, but it equals 65 Bye Jonas ```
 Re: [Qucs-help] Circuit RC From: Stefan Jahn - 2008-02-24 08:10:45 Attachments: rc.sch rc.dpl ```Am So, 24.02.2008, 01:50, schrieb Jonas: > Hello Hi Jonas, > I did a simple RC circuit that runs with the AC simulation. > With the source V2 it works, but I would like to replace V2 by the source > V3 > which generate a triangular signal. When I use the source V3, Uin and Uout > remain to 0V with the AC simulation. Is there a way to do it? Putting them in series gives the right AC value. Since the rectangular pulse voltage source (your triangular generator) does not produce a harmonic signal, its AC value has been set to 0V. > I also find a bug with the equations > a=45*sqrt(2)*Uout.v/Uin.v > b=90-a > When a equals 45, then b must equals 45, but it equals 65 In you circuit a never equals 45 but 45-j30, please see attachments in the diagrams. Cheers, Stefan.```