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       1                 :            : /*
       2                 :            :  * iac.cpp - AC current source class implementation
       3                 :            :  *
       4                 :            :  * Copyright (C) 2004, 2006, 2007, 2008 Stefan Jahn <stefan@lkcc.org>
       5                 :            :  *
       6                 :            :  * This is free software; you can redistribute it and/or modify
       7                 :            :  * it under the terms of the GNU General Public License as published by
       8                 :            :  * the Free Software Foundation; either version 2, or (at your option)
       9                 :            :  * any later version.
      10                 :            :  *
      11                 :            :  * This software is distributed in the hope that it will be useful,
      12                 :            :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      13                 :            :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      14                 :            :  * GNU General Public License for more details.
      15                 :            :  *
      16                 :            :  * You should have received a copy of the GNU General Public License
      17                 :            :  * along with this package; see the file COPYING.  If not, write to
      18                 :            :  * the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
      19                 :            :  * Boston, MA 02110-1301, USA.
      20                 :            :  *
      21                 :            :  * $Id$
      22                 :            :  *
      23                 :            :  */
      24                 :            : 
      25                 :            : #if HAVE_CONFIG_H
      26                 :            : # include <config.h>
      27                 :            : #endif
      28                 :            : 
      29                 :            : #include "component.h"
      30                 :            : #include "iac.h"
      31                 :            : 
      32                 :            : using namespace qucs;
      33                 :            : 
      34                 :          2 : iac::iac () : circuit (2) {
      35                 :          2 :   type = CIR_IAC;
      36                 :          2 :   setISource (true);
      37                 :          2 : }
      38                 :            : 
      39                 :          0 : void iac::initSP (void) {
      40                 :          0 :   allocMatrixS ();
      41         [ #  # ]:          0 :   setS (NODE_1, NODE_1, 1.0);
      42         [ #  # ]:          0 :   setS (NODE_1, NODE_2, 0.0);
      43         [ #  # ]:          0 :   setS (NODE_2, NODE_1, 0.0);
      44         [ #  # ]:          0 :   setS (NODE_2, NODE_2, 1.0);
      45                 :          0 : }
      46                 :            : 
      47                 :          3 : void iac::initDC (void) {
      48                 :          3 :   allocMatrixMNA ();
      49                 :          3 :   clearI ();
      50                 :          3 : }
      51                 :            : 
      52                 :          0 : void iac::initAC (void) {
      53         [ #  # ]:          0 :   nr_double_t a = getPropertyDouble ("I");
      54         [ #  # ]:          0 :   nr_double_t p = getPropertyDouble ("Phase");
      55         [ #  # ]:          0 :   nr_complex_t i = qucs::polar (a, rad (p));
      56         [ #  # ]:          0 :   allocMatrixMNA ();
      57 [ #  # ][ #  # ]:          0 :   setI (NODE_1, +i); setI (NODE_2, -i);
      58                 :          0 : }
      59                 :            : 
      60                 :       5457 : void iac::calcTR (nr_double_t t) {
      61                 :       5457 :   nr_double_t f = getPropertyDouble ("f");
      62                 :       5457 :   nr_double_t p = getPropertyDouble ("Phase");
      63                 :       5457 :   nr_double_t d = getPropertyDouble ("Theta");
      64                 :       5457 :   nr_double_t a = getPropertyDouble ("I");
      65                 :       5457 :   nr_double_t s = getNet()->getSrcFactor ();
      66                 :       5457 :   nr_double_t o = 2 * M_PI * f;
      67                 :       5457 :   nr_double_t T = p / f / 360;
      68                 :       5457 :   nr_double_t i = s * a * std::exp (-(t + T) * d * f) * std::sin (o * t + rad (p));
      69 [ +  - ][ +  - ]:       5457 :   setI (NODE_1, +i); setI (NODE_2, -i);
      70                 :       5457 : }
      71                 :            : 
      72                 :            : // properties
      73                 :            : PROP_REQ [] = {
      74                 :            :   { "I", PROP_REAL, { 1e-3, PROP_NO_STR }, PROP_NO_RANGE }, PROP_NO_PROP };
      75                 :            : PROP_OPT [] = {
      76                 :            :   { "Phase", PROP_REAL, { 0, PROP_NO_STR }, PROP_RNGII (-360, 360) },
      77                 :            :   { "Theta", PROP_REAL, { 0, PROP_NO_STR }, PROP_POS_RANGE },
      78                 :            :   { "f", PROP_REAL, { 1e9, PROP_NO_STR }, PROP_POS_RANGE },
      79                 :            :   PROP_NO_PROP };
      80                 :            : struct define_t iac::cirdef =
      81                 :            :   { "Iac", 2, PROP_COMPONENT, PROP_NO_SUBSTRATE, PROP_LINEAR, PROP_DEF };