Qucs-core
0.0.19
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00001 /* 00002 * dcfeed.cpp - DC feed class implementation 00003 * 00004 * Copyright (C) 2003, 2004, 2005, 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 "dcfeed.h" 00031 00032 using namespace qucs; 00033 00034 dcfeed::dcfeed () : circuit (2) { 00035 type = CIR_DCFEED; 00036 } 00037 00038 void dcfeed::initSP (void) { 00039 allocMatrixS (); 00040 setS (NODE_1, NODE_1, 1.0); 00041 setS (NODE_2, NODE_2, 1.0); 00042 setS (NODE_1, NODE_2, 0.0); 00043 setS (NODE_2, NODE_1, 0.0); 00044 } 00045 00046 void dcfeed::initDC (void) { 00047 setVoltageSources (1); 00048 allocMatrixMNA (); 00049 voltageSource (VSRC_1, NODE_1, NODE_2); 00050 } 00051 00052 void dcfeed::initAC (void) { 00053 setVoltageSources (0); 00054 allocMatrixMNA (); 00055 } 00056 00057 #define fState 0 // flux state 00058 #define vState 1 // voltage state 00059 00060 void dcfeed::initTR (void) { 00061 initDC (); 00062 setStates (2); 00063 } 00064 00065 void dcfeed::calcTR (nr_double_t) { 00066 nr_double_t l = getPropertyDouble ("L"); 00067 nr_double_t r, v; 00068 nr_double_t i = real (getJ (VSRC_1)); 00069 00070 setState (fState, i * l); 00071 integrate (fState, l, r, v); 00072 setD (VSRC_1, VSRC_1, -r); 00073 setE (VSRC_1, v); 00074 } 00075 00076 // properties 00077 PROP_REQ [] = { 00078 PROP_NO_PROP }; 00079 PROP_OPT [] = { 00080 { "L", PROP_REAL, { 1e-6, PROP_NO_STR }, PROP_POS_RANGE }, 00081 PROP_NO_PROP }; 00082 struct define_t dcfeed::cirdef = 00083 { "DCFeed", 2, PROP_COMPONENT, PROP_NO_SUBSTRATE, PROP_LINEAR, PROP_DEF };