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diff --git a/src/electronics/simulation/reactive.h b/src/electronics/simulation/reactive.h
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+/***************************************************************************
+ *   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.                                   *
+ ***************************************************************************/
+
+#ifndef REACTIVE_H
+#define REACTIVE_H
+
+#include "element.h"
+
+/**
+@short Represents a reactive element (such as a capacitor)
+@author David Saxton
+*/
+class Reactive : public Element
+{
+public:
+	Reactive( const double delta );
+	virtual ~Reactive();
+	
+	virtual bool isReactive() { return true; }
+	/**
+	 * Call this function to set the time period (in seconds)
+	 */
+	void setDelta( double delta );
+	/**
+	 * Called on every time step for the element to update itself
+	 */
+	virtual void time_step() = 0;
+	
+protected:
+	virtual bool updateStatus();
+	
+	double m_delta; // Delta time interval
+};
+
+#endif