Sinusoidal Current Source

A sinusoidal current source with attenuation.

blockType: AcausalElectricPowerSystems.SPICE.Sources.SinusoidalCurrent

Path in the library:

/Physical Modeling/Electrical/SPICE/Sources/Sinusoidal Current Source

Description

The Sinusoidal Current Source block is a sinusoidal current source whose output current is independent of the voltage at the source terminals. The following equations describe the current through the source as a function of time:

where

- corresponds to the value of the parameter Current offset, IO;
- corresponds to the value of the parameter Sinusoidal amplitude, IA;
- corresponds to the value of the parameter Sinusoidal frequency, FREQ;
- corresponds to the value of the Time delay parameter, TD;
- corresponds to the Damping factor, DF parameters.

To prevent problems in numerical modelling, the block uses a small internal conductor. The conductor connects the + and - terminals of the device and has the conductivity GMIN:

By default, the value of GMIN is 1e-12 1/ohm.

Ports

Conserving

# + — positive terminal
scalar

Details

An electrical port connected to the positive terminal of a sinusoidal current source.

Program usage name

p

# - — negative terminal
scalar

Details

An electrical port connected to the negative terminal of a sinusoidal current source.

Program usage name

n

Parameters

# Current offset, IO — current offset
A | pA | nA | uA | mA | kA | MA

Details

Current offset, independent of time.

Units	`A` \| `pA` \| `nA` \| `uA` \| `mA` \| `kA` \| `MA`
Default value	`0.0 A`
Program usage name	`IO`
Evaluatable	Yes

# Sinusoidal amplitude, IA — sinusoidal amplitude
A | pA | nA | uA | mA | kA | MA

Details

The amplitude of the sinusoidal part of the output current.

Units	`A` \| `pA` \| `nA` \| `uA` \| `mA` \| `kA` \| `MA`
Default value	`0.0 A`
Program usage name	`IA`
Evaluatable	Yes

# Sinusoidal frequency, FREQ — sinusoidal frequency
Hz | kHz | MHz | GHz

Details

The frequency of the sinusoidal part of the output current. The value may be less than 0.

Units	`Hz` \| `kHz` \| `MHz` \| `GHz`
Default value	`1e6 Hz`
Program usage name	`FREQ`
Evaluatable	Yes

# Time delay, TD — sinusoidal delay time
s | ns | us | ms | min | hr | d

Details

The start time of a sine wave. A value less than 0 indicates a 180 degree phase shift.

Units	`s` \| `ns` \| `us` \| `ms` \| `min` \| `hr` \| `d`
Default value	`0.0 s`
Program usage name	`TD`
Evaluatable	Yes

# Damping factor, DF — damping factor
Hz | kHz | MHz | GHz | 1/s

Details

The exponential damping factor of a sinusoidal signal to produce an output voltage. If DF is greater than 0, the exponential part of the equation always dampens for a time greater than TD. The value must be greater than or equal to 0.

Units	`Hz` \| `kHz` \| `MHz` \| `GHz` \| `1/s`
Default value	`0.0 1/s`
Program usage name	`DF`
Evaluatable	Yes

# Include parallel conductance, GMIN — parallel conduction inclusion

Details

Specify whether the current source includes parallel conductivity. By default, the parallel conductivity value GMIN is 1e-12 1/ohm.

Default value	`true (switched on)`
Program usage name	`g_min_parameterization`
Evaluatable	No