Modelica.Electrical.Spice3.Sources

Time dependent SPICE3 voltage and current 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.

Extends from Modelica.Icons.SourcesPackage (Icon for packages containing sources).

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

Constant independent voltage sources

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.

Extends from Modelica.Electrical.Analog.Interfaces.OnePort (Component with two electrical pins p and n and current i from p to n).

Parameters

Connectors

Modelica.Electrical.Spice3.Sources.V_sin

Sinusoidal voltage source

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.
  

Extends from Modelica.Electrical.Analog.Interfaces.OnePort (Component with two electrical pins p and n and current i from p to n).

Parameters

Connectors

Modelica.Electrical.Spice3.Sources.V_exp

Exponential voltage source

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.
  

Extends from Modelica.Electrical.Analog.Interfaces.OnePort (Component with two electrical pins p and n and current i from p to n).

Parameters

Connectors

Modelica.Electrical.Spice3.Sources.V_pulse

Pulse voltage source

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.

Extends from Modelica.Electrical.Analog.Interfaces.OnePort (Component with two electrical pins p and n and current i from p to n).

Parameters

Connectors

Modelica.Electrical.Spice3.Sources.V_pwl

Piece-wise linear voltage source

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).

Extends from Modelica.Electrical.Analog.Interfaces.OnePort (Component with two electrical pins p and n and current i from p to n).

Parameters

Connectors

Modelica.Electrical.Spice3.Sources.V_sffm

Single-frequency FM voltage source

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.

Extends from Modelica.Electrical.Analog.Interfaces.OnePort (Component with two electrical pins p and n and current i from p to n).

Parameters

Connectors

Modelica.Electrical.Spice3.Sources.I_constant

Constant independent current sources

Information

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

Extends from Modelica.Electrical.Analog.Interfaces.OnePort (Component with two electrical pins p and n and current i from p to n).

Parameters

Connectors

Modelica.Electrical.Spice3.Sources.I_sin

Sinusoidal current source

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.

Extends from Modelica.Electrical.Analog.Interfaces.OnePort (Component with two electrical pins p and n and current i from p to n).

Parameters

Connectors

Modelica.Electrical.Spice3.Sources.I_exp

Exponential current source

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.

Extends from Modelica.Electrical.Analog.Interfaces.OnePort (Component with two electrical pins p and n and current i from p to n).

Parameters

Connectors

Modelica.Electrical.Spice3.Sources.I_pulse

Pulse current source

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.

Extends from Modelica.Electrical.Analog.Interfaces.OnePort (Component with two electrical pins p and n and current i from p to n).

Parameters

Connectors

Modelica.Electrical.Spice3.Sources.I_pwl

Piece-wise linear current source

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).

Extends from Modelica.Electrical.Analog.Interfaces.OnePort (Component with two electrical pins p and n and current i from p to n).

Parameters

Connectors

Modelica.Electrical.Spice3.Sources.I_sffm

Single-frequency FM current source

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.

Extends from Modelica.Electrical.Analog.Interfaces.OnePort (Component with two electrical pins p and n and current i from p to n).

Parameters

Connectors