Qucs-core  0.0.19
vac.cpp
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00001 /*
00002  * vac.cpp - AC voltage source class implementation
00003  *
00004  * Copyright (C) 2003, 2004, 2006, 2007, 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 "vac.h"
00031 
00032 using namespace qucs;
00033 
00034 vac::vac () : circuit (2) {
00035   type = CIR_VAC;
00036   setVSource (true);
00037   setVoltageSources (1);
00038 }
00039 
00040 void vac::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 vac::initDC (void) {
00049   allocMatrixMNA ();
00050   voltageSource (VSRC_1, NODE_1, NODE_2);
00051 }
00052 
00053 void vac::initAC (void) {
00054   initDC ();
00055   nr_double_t a = getPropertyDouble ("U");
00056   nr_double_t p = getPropertyDouble ("Phase");
00057   setE (VSRC_1, qucs::polar (a, deg2rad (p)));
00058 }
00059 
00060 void vac::initTR (void) {
00061   initDC ();
00062 }
00063 
00064 void vac::calcTR (nr_double_t t) {
00065   nr_double_t f = getPropertyDouble ("f");
00066   nr_double_t p = getPropertyDouble ("Phase");
00067   nr_double_t d = getPropertyDouble ("Theta");
00068   nr_double_t a = getPropertyDouble ("U");
00069   nr_double_t s = getNet()->getSrcFactor ();
00070   nr_double_t o = 2 * pi * f;
00071   nr_double_t T = p / f / 360;
00072   nr_double_t u = s * a * std::exp (-(t + T) * d * f) * std::sin (o * t + deg2rad (p));
00073   setE (VSRC_1, u);
00074 }
00075 
00076 void vac::initHB (void) {
00077   setVoltageSources (1);
00078   allocMatrixMNA ();
00079   voltageSource (VSRC_1, NODE_1, NODE_2);
00080 }
00081 
00082 void vac::calcHB (nr_double_t frequency) {
00083   nr_double_t f = getPropertyDouble ("f");
00084   if (f == frequency) {
00085     nr_double_t a = getPropertyDouble ("U");
00086     nr_double_t p = getPropertyDouble ("Phase");
00087     setE (VSRC_1, qucs::polar (a, deg2rad (p)));
00088   }
00089   else {
00090     setE (VSRC_1, 0);
00091   }
00092 }
00093 
00094 // properties
00095 PROP_REQ [] = {
00096   { "U", PROP_REAL, { 1, PROP_NO_STR }, PROP_NO_RANGE }, PROP_NO_PROP };
00097 PROP_OPT [] = {
00098   { "Phase", PROP_REAL, { 0, PROP_NO_STR }, PROP_RNGII (-360, 360) },
00099   { "Theta", PROP_REAL, { 0, PROP_NO_STR }, PROP_POS_RANGE },
00100   { "f", PROP_REAL, { 1e9, PROP_NO_STR }, PROP_POS_RANGE },
00101   PROP_NO_PROP };
00102 struct define_t vac::cirdef =
00103   { "Vac", 2, PROP_COMPONENT, PROP_NO_SUBSTRATE, PROP_LINEAR, PROP_DEF };