Qucs-core  0.0.19
cross.cpp
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00001 /*
00002  * cross.cpp - cross connector class implementation
00003  *
00004  * Copyright (C) 2003, 2004, 2008 Stefan Jahn <stefan@lkcc.org>
00005  *
00006  * This is free software; you can redistribute it and/or modify
00007  * it under the terms of the GNU General Public License as published by
00008  * the Free Software Foundation; either version 2, or (at your option)
00009  * any later version.
00010  *
00011  * This software is distributed in the hope that it will be useful,
00012  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00014  * GNU General Public License for more details.
00015  *
00016  * You should have received a copy of the GNU General Public License
00017  * along with this package; see the file COPYING.  If not, write to
00018  * the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
00019  * Boston, MA 02110-1301, USA.
00020  *
00021  * $Id$
00022  *
00023  */
00024 
00025 #if HAVE_CONFIG_H
00026 # include <config.h>
00027 #endif
00028 
00029 #include "component.h"
00030 #include "cross.h"
00031 
00032 using namespace qucs;
00033 
00034 cross::cross () : circuit (4) {
00035   type = CIR_CROSS;
00036   setVoltageSources (3);
00037 }
00038 
00039 void cross::initSP (void) {
00040   allocMatrixS ();
00041   setS (NODE_1, NODE_1, -1.0 / 2.0);
00042   setS (NODE_1, NODE_2,  1.0 / 2.0);
00043   setS (NODE_1, NODE_3,  1.0 / 2.0);
00044   setS (NODE_1, NODE_4,  1.0 / 2.0);
00045   setS (NODE_2, NODE_1,  1.0 / 2.0);
00046   setS (NODE_2, NODE_2, -1.0 / 2.0);
00047   setS (NODE_2, NODE_3,  1.0 / 2.0);
00048   setS (NODE_2, NODE_4,  1.0 / 2.0);
00049   setS (NODE_3, NODE_1,  1.0 / 2.0);
00050   setS (NODE_3, NODE_2,  1.0 / 2.0);
00051   setS (NODE_3, NODE_3, -1.0 / 2.0);
00052   setS (NODE_3, NODE_4,  1.0 / 2.0);
00053   setS (NODE_4, NODE_1,  1.0 / 2.0);
00054   setS (NODE_4, NODE_2,  1.0 / 2.0);
00055   setS (NODE_4, NODE_3,  1.0 / 2.0);
00056   setS (NODE_4, NODE_4, -1.0 / 2.0);
00057 }
00058 
00059 void cross::initDC (void) {
00060   allocMatrixMNA ();
00061   voltageSource (VSRC_1, NODE_1, NODE_2);
00062   voltageSource (VSRC_2, NODE_1, NODE_3);
00063   voltageSource (VSRC_3, NODE_1, NODE_4);
00064 }
00065 
00066 void cross::initAC (void) {
00067   initDC ();
00068 }
00069 
00070 void cross::initTR (void) {
00071   initDC ();
00072 }