blob: 0b139464682dd303cc1e56190cc85cc33e13b4c4 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
|
/***************************************************************************
* Copyright (C) 2003-2004 by David Saxton *
* [email protected] *
* *
* 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 DIODE_H
#define DIODE_H
#include "nonlinear.h"
class DiodeSettings
{
public:
DiodeSettings();
void reset();
double I_S; ///< Diode saturation current
double N; ///< Emission coefficient
double V_B; ///< Reverse breakdown
// double R; ///< Series resistance
};
/**
This simulates a diode. The simulated diode characteristics are:
@li I_s: Diode saturation current
@li V_T: Thermal voltage = kT/4 = 25mV at 20 C
@li n: Emission coefficient, typically between 1 and 2
@li V_RB: Reverse breakdown (large negative voltage)
@li G_RB: Reverse breakdown conductance
@li R_D: Base resistance of diode
@short Simulates the electrical property of diode-ness
@author David Saxton
*/
class Diode : public NonLinear
{
public:
Diode();
virtual ~Diode();
virtual void update_dc();
virtual void add_initial_dc();
virtual void add_map();
virtual Element::Type type() const { return Element_Diode; }
DiodeSettings settings() const { return m_diodeSettings; }
void setDiodeSettings( const DiodeSettings & settings );
/**
* Returns the current flowing through the diode
*/
double current() const;
protected:
virtual void updateCurrents();
void calc_eq();
void calcIg( double V, double * I, double * g ) const;
double g_new, g_old;
double I_new, I_old;
double V_prev;
DiodeSettings m_diodeSettings;
};
#endif
|
