Qucs-core  0.0.19
vdc.cpp
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00001 /*
00002  * vdc.cpp - DC voltage source class implementation
00003  *
00004  * Copyright (C) 2003, 2004, 2006, 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 "vdc.h"
00031 
00032 using namespace qucs;
00033 
00034 vdc::vdc () : circuit (2) {
00035   type = CIR_VDC;
00036   setVSource (true);
00037   setVoltageSources (1);
00038 }
00039 
00040 void vdc::initSP (void) {
00041   allocMatrixS ();
00042   setS (NODE_1, NODE_1, 0.0);
00043   setS (NODE_1, NODE_2, 1.0);
00044   setS (NODE_2, NODE_1, 1.0);
00045   setS (NODE_2, NODE_2, 0.0);
00046 }
00047 
00048 void vdc::initDC (void) {
00049   allocMatrixMNA ();
00050   voltageSource (VSRC_1, NODE_1, NODE_2, getPropertyDouble ("U"));
00051 }
00052 
00053 void vdc::calcDC (void) {
00054   nr_double_t f = getNet()->getSrcFactor ();
00055   setE (VSRC_1, f * getPropertyDouble ("U"));
00056 }
00057 
00058 void vdc::initTR (void) {
00059   initDC ();
00060 }
00061 
00062 void vdc::initAC (void) {
00063   initDC ();
00064   setE (VSRC_1, 0.0);
00065 }
00066 
00067 void vdc::initHB (void) {
00068   allocMatrixMNA ();
00069   voltageSource (VSRC_1, NODE_1, NODE_2);
00070 }
00071 
00072 void vdc::calcHB (nr_double_t frequency) {
00073   if (frequency == 0.0) {
00074     setE (VSRC_1, getPropertyDouble ("U"));
00075   } else {
00076     setE (VSRC_1, 0);
00077   }
00078 }
00079 
00080 // properties
00081 PROP_REQ [] = {
00082   { "U", PROP_REAL, { 1, PROP_NO_STR }, PROP_NO_RANGE }, PROP_NO_PROP };
00083 PROP_OPT [] = {
00084   PROP_NO_PROP };
00085 struct define_t vdc::cirdef =
00086   { "Vdc", 2, PROP_COMPONENT, PROP_NO_SUBSTRATE, PROP_LINEAR, PROP_DEF };