Qucs-core
0.0.19
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00001 /* 00002 * trafo.cpp - trafo class implementation 00003 * 00004 * Copyright (C) 2003, 2004, 2005, 2008, 2011 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 "trafo.h" 00031 00032 using namespace qucs; 00033 00034 trafo::trafo () : circuit (4) { 00035 type = CIR_TRAFO; 00036 } 00037 00038 void trafo::initSP (void) { 00039 nr_double_t t = getPropertyDouble ("T"); 00040 nr_double_t d = t * t + 1.0; 00041 nr_double_t z1 = t * t / d; 00042 nr_double_t z2 = t / d; 00043 nr_double_t z3 = 1 / d; 00044 allocMatrixS (); 00045 setS (NODE_1, NODE_1, z1); setS (NODE_1, NODE_2, z2); 00046 setS (NODE_1, NODE_3, -z2); setS (NODE_1, NODE_4, z3); 00047 setS (NODE_2, NODE_1, z2); setS (NODE_2, NODE_2, z3); 00048 setS (NODE_2, NODE_3, z1); setS (NODE_2, NODE_4, -z2); 00049 setS (NODE_3, NODE_1, -z2); setS (NODE_3, NODE_2, z1); 00050 setS (NODE_3, NODE_3, z3); setS (NODE_3, NODE_4, z2); 00051 setS (NODE_4, NODE_1, z3); setS (NODE_4, NODE_2, -z2); 00052 setS (NODE_4, NODE_3, z2); setS (NODE_4, NODE_4, z1); 00053 } 00054 00055 void trafo::initDC (void) { 00056 setVoltageSources (2); 00057 allocMatrixMNA (); 00058 voltageSource (VSRC_1, NODE_1, NODE_4); 00059 voltageSource (VSRC_2, NODE_2, NODE_3); 00060 } 00061 00062 void trafo::initAC (void) { 00063 nr_double_t t = getPropertyDouble ("T"); 00064 setVoltageSources (1); 00065 allocMatrixMNA (); 00066 setB (NODE_1, VSRC_1, -1); setB (NODE_2, VSRC_1, +t); 00067 setB (NODE_3, VSRC_1, -t); setB (NODE_4, VSRC_1, +1); 00068 setC (VSRC_1, NODE_1, +1); setC (VSRC_1, NODE_2, -t); 00069 setC (VSRC_1, NODE_3, +t); setC (VSRC_1, NODE_4, -1); 00070 setD (VSRC_1, VSRC_1, +0); 00071 setE (VSRC_1, 0); 00072 } 00073 00074 void trafo::initTR (void) { 00075 initAC (); 00076 } 00077 00078 // properties 00079 PROP_REQ [] = { 00080 { "T", PROP_REAL, { 1, PROP_NO_STR }, PROP_POS_RANGE }, PROP_NO_PROP }; 00081 PROP_OPT [] = { 00082 PROP_NO_PROP }; 00083 struct define_t trafo::cirdef = 00084 { "Tr", 4, PROP_COMPONENT, PROP_NO_SUBSTRATE, PROP_LINEAR, PROP_DEF };