Modelica.Electrical.Spice3.Sources

Information

This package contains the SPICE sources.

Note: There are differences between SPICE3 and Modelica concerning the default values of the parameter. Therefore it is recommended to specify all parameters of the source.

Package Content

Name	Description
V_constant	Constant independent voltage sources
V_sin	Sinusoidal voltage source
V_exp	Exponential voltage source
V_pulse	Pulse voltage source
V_pwl	Piece-wise linear voltage source
V_sffm	Single-frequency FM voltage source
I_constant	Constant independent current sources
I_sin	Sinusoidal current source
I_exp	Exponential current source
I_pulse	Pulse current source
I_pwl	Piece-wise linear current source
I_sffm	Single-frequency FM current source

Modelica.Electrical.Spice3.Sources.V_constant

Information

The V_constant source is a source is a simple constant voltage source for an ideal constant voltage which is provided by a parameter.

Parameters

Name	Description
V	Value of constant voltage [V]

Connectors

Name	Description
p	Positive pin (potential p.v > n.v for positive voltage drop v)
n	Negative pin

Modelica.Electrical.Spice3.Sources.V_sin

Information

Damped sinusoidal source

Note:

• All parameters of sources should be set explicitly.
• since TSTEP and TSTOP are not available for modeling in Modelica, differences to SPICE may occur if not all parameters are set.
  

Parameters

Name	Description
VO	Offset [V]
VA	Amplitude [V]
FREQ	Frequency [Hz]
TD	Delay [s]
THETA	Damping factor [s-1]

Connectors

Name	Description
p	Positive pin (potential p.v > n.v for positive voltage drop v)
n	Negative pin

Modelica.Electrical.Spice3.Sources.V_exp

Information

Rising and falling exponential source.

Note:

• All parameters of sources should be set explicitly.
• since TSTEP and TSTOP are not available for modeling in Modelica, differences to SPICE may occur if not all parameters are set.- it should be set all the parameters definitely
  - normally, there exist differences between Dymola and Spice, because TSTEP and TSTOP are not available.
  

Parameters

Name	Description
V1	Initial value [V]
V2	Pulsed value [V]
TD1	Rise delay time [s]
TAU1	Rise time constant [s]
TD2	Fall delay time [s]
TAU2	Fall time constant [s]

Connectors

Name	Description
p	Positive pin (potential p.v > n.v for positive voltage drop v)
n	Negative pin

Modelica.Electrical.Spice3.Sources.V_pulse

Information

Periodic pulse source with not limited number of periods.

A single pulse is described by the following table:

Intermediate points are determined by linear interpolation.

A pulse it looks like a saw tooth, use this parameters e.g.:

Note:

• All parameters of sources should be set explicitly.
• since TSTEP and TSTOP are not available for modeling in Modelica, differences to SPICE may occur if not all parameters are set.

Parameters

Name	Description
V1	Initial value [V]
V2	Pulsed value [V]
TD	Delay time [s]
TR	Rise time [s]
TF	Fall time [s]
PW	Pulse width [s]
PER	Period [s]

Connectors

Name	Description
p	Positive pin (potential p.v > n.v for positive voltage drop v)
n	Negative pin

Modelica.Electrical.Spice3.Sources.V_pwl

Information

This model generates a voltage by linear interpolation in a given table. The time points and voltage values are stored in a matrix table[i,j], where the first column table[:,1] contains the time points and the second column contains the voltage to be interpolated. The table interpolation has the following properties:

• The time points need to be monotonically increasing.
• Discontinuities are allowed, by providing the same time point twice in the table.
• Values outside of the table range, are computed by extrapolation through the last or first two points of the table.
• If the table has only one row, no interpolation is performed and the voltage value is just returned independently of the actual time instant, i.e., this is a constant voltage source.
• Via parameters startTime and offset the curve defined by the table can be shifted both in time and in the voltage.
• The table is implemented in a numerically sound way by generating time events at interval boundaries. This generates continuously differentiable values for the integrator.

Example:

   table = [0  0
            1  0
            1  1
            2  4
            3  9
            4 16]
If, e.g., time = 1.0, the voltage v =  0.0 (before event), 1.0 (after event)
    e.g., time = 1.5, the voltage v =  2.5,
    e.g., time = 2.0, the voltage v =  4.0,
    e.g., time = 5.0, the voltage v = 23.0 (i.e., extrapolation).

Parameters

Name	Description
table[:, :]	Table matrix (time = first column, voltage = second column)

Connectors

Name	Description
p	Positive pin (potential p.v > n.v for positive voltage drop v)
n	Negative pin

Modelica.Electrical.Spice3.Sources.V_sffm

Information

The single-frequency frequency modulation source generates a carrier signal of the frequency FC. This signal is modulated by the signal frequency FS. See the formula in the Modelica text.

Attention:

• All parameters of sources should be set explicitly.
• since TSTEP and TSTOP are not available for modeling in Modelica, differences to SPICE may occur if not all parameters are set.

Parameters

Name	Description
VO	Offset [V]
VA	Amplitude [V]
FC	Carrier frequency [Hz]
MDI	Modulation index
FS	Signal frequency [Hz]

Connectors

Name	Description
p	Positive pin (potential p.v > n.v for positive voltage drop v)
n	Negative pin

Modelica.Electrical.Spice3.Sources.I_constant

Information

The I_constant source is a simple constant current source for an ideal constant current which is provided by a parameter.

Parameters

Name	Description
I	Value of constant voltage [A]

Connectors

Name	Description
p	Positive pin (potential p.v > n.v for positive voltage drop v)
n	Negative pin

Modelica.Electrical.Spice3.Sources.I_sin

Information

Damped sinusoidal source

Note:

• All parameters of sources should be set explicitly.
• since TSTEP and TSTOP are not available for modeling in Modelica, differences to SPICE may occur if not all parameters are set.

Parameters

Name	Description
IO	Offset [A]
IA	Amplitude [A]
FREQ	Frequency [Hz]
TD	Delay [s]
THETA	Damping factor [s-1]

Connectors

Name	Description
p	Positive pin (potential p.v > n.v for positive voltage drop v)
n	Negative pin

Modelica.Electrical.Spice3.Sources.I_exp

Information

Rising and falling exponential source.

Note:

• All parameters of sources should be set explicitly.
• since TSTEP and TSTOP are not available for modeling in Modelica, differences to SPICE may occur if not all parameters are set.

Parameters

Name	Description
I1	Initial value [A]
I2	Pulsed value [A]
TD1	Rise delay time [s]
TAU1	Rise time constant [s]
TD2	Fall delay time [s]
TAU2	Fall time constant [s]

Connectors

Name	Description
p	Positive pin (potential p.v > n.v for positive voltage drop v)
n	Negative pin

Modelica.Electrical.Spice3.Sources.I_pulse

Information

Periodic pulse source with not limited number of periods.

A single pulse is described by the following table:

Intermediate points are determined by linear interpolation.

A pulse it looks like a saw tooth, use this parameters e.g.:

Note:

• All parameters of sources should be set explicitly.
• since TSTEP and TSTOP are not available for modeling in Modelica, differences to SPICE may occur if not all parameters are set.

Parameters

Name	Description
I1	Initial value [A]
I2	Pulsed value [A]
TD	Delay time [s]
TR	Rise time [s]
TF	Fall time [s]
PW	Pulse width [s]
PER	Period [s]

Connectors

Name	Description
p	Positive pin (potential p.v > n.v for positive voltage drop v)
n	Negative pin

Modelica.Electrical.Spice3.Sources.I_pwl

Information

This model generates a current by linear interpolation in a given table. The time points and current values are stored in a matrix table[i,j], where the first column table[:,1] contains the time points and the second column contains the current to be interpolated. The table interpolation has the following properties:

• The time points need to be monotonically increasing.
• Discontinuities are allowed, by providing the same time point twice in the table.
• Values outside of the table range, are computed by extrapolation through the last or first two points of the table.
• If the table has only one row, no interpolation is performed and the current value is just returned independently of the actual time instant, i.e., this is a constant current source.
• Via parameters startTime and offset the curve defined by the table can be shifted both in time and in the current.
• The table is implemented in a numerically sound way by generating time events at interval boundaries. This generates continuously differentiable values for the integrator.

Example:

   table = [0  0
            1  0
            1  1
            2  4
            3  9
            4 16]
If, e.g., time = 1.0, the current i =  0.0 (before event), 1.0 (after event)
    e.g., time = 1.5, the current i =  2.5,
    e.g., time = 2.0, the current i =  4.0,
    e.g., time = 5.0, the current i = 23.0 (i.e., extrapolation).

Parameters

Name	Description
table[:, :]	Table matrix (time = first column, voltage = second column)

Connectors

Name	Description
p	Positive pin (potential p.v > n.v for positive voltage drop v)
n	Negative pin

Modelica.Electrical.Spice3.Sources.I_sffm

Information

The single-frequency frequency modulation source generates a carrier signal of the frequency FC. This signal is modulated by the signal frequency FS. See the formula in the Modelica text.

Note:

• All parameters of sources should be set explicitly.
• since TSTEP and TSTOP are not available for modeling in Modelica, differences to SPICE may occur if not all parameters are set.

Parameters

Name	Description
IO	Offset [A]
IA	Amplitude [A]
FC	Carrier frequency [Hz]
MDI	Modulation index
FS	Signal frequency [Hz]

Connectors

Name	Description
p	Positive pin (potential p.v > n.v for positive voltage drop v)
n	Negative pin