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-rw-r--r--src/electronics/simulation/vccs.cpp93
1 files changed, 93 insertions, 0 deletions
diff --git a/src/electronics/simulation/vccs.cpp b/src/electronics/simulation/vccs.cpp
new file mode 100644
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--- /dev/null
+++ b/src/electronics/simulation/vccs.cpp
@@ -0,0 +1,93 @@
+/***************************************************************************
+ * Copyright (C) 2003-2004 by David Saxton *
+ * david@bluehaze.org *
+ * *
+ * This program is free software; you can redistribute it and/or modify *
+ * it under the terms of the GNU General Public License as published by *
+ * the Free Software Foundation; either version 2 of the License, or *
+ * (at your option) any later version. *
+ ***************************************************************************/
+
+#include "elementset.h"
+#include "matrix.h"
+#include "vccs.h"
+
+VCCS::VCCS( const double gain )
+ : Element::Element()
+{
+ m_g = gain;
+ m_numCBranches = 1;
+ m_numCNodes = 4;
+}
+
+
+VCCS::~VCCS()
+{
+}
+
+
+void VCCS::setGain( const double g )
+{
+ if ( g == m_g ) return;
+
+ if (p_eSet)
+ p_eSet->setCacheInvalidated();
+
+ // Remove old values
+ m_g = -m_g;
+ add_initial_dc();
+
+ // Add new values
+ m_g = g;
+ add_initial_dc();
+}
+
+
+void VCCS::add_map()
+{
+ if (!b_status) return;
+
+ if ( !p_cnode[0]->isGround )
+ {
+ p_A->setUse_c( p_cbranch[0]->n(), p_cnode[0]->n(), Map::et_stable, false );
+ }
+ if ( !p_cnode[1]->isGround )
+ {
+ p_A->setUse_c( p_cbranch[0]->n(), p_cnode[1]->n(), Map::et_stable, false );
+ }
+ if ( !p_cnode[2]->isGround )
+ {
+ p_A->setUse_b( p_cnode[2]->n(), p_cbranch[0]->n(), Map::et_constant, true );
+ p_A->setUse_c( p_cbranch[0]->n(), p_cnode[2]->n(), Map::et_constant, true );
+ }
+ if ( !p_cnode[3]->isGround )
+ {
+ p_A->setUse_b( p_cnode[3]->n(), p_cbranch[0]->n(), Map::et_constant, true );
+ p_A->setUse_c( p_cbranch[0]->n(), p_cnode[3]->n(), Map::et_constant, true );
+ }
+}
+
+
+void VCCS::add_initial_dc()
+{
+ if (!b_status)
+ return;
+
+ A_g( 2, 0 ) += m_g;
+ A_g( 3, 0 ) -= m_g;
+ A_g( 2, 1 ) -= m_g;
+ A_g( 3, 1 ) += m_g;
+}
+
+
+void VCCS::updateCurrents()
+{
+ if (!b_status)
+ return;
+
+ m_cnodeI[0] = m_cnodeI[1] = 0.;
+ m_cnodeI[3] = (p_cnode[0]->v-p_cnode[1]->v)*m_g;
+ m_cnodeI[2] = -m_cnodeI[3];
+}
+
+