Scicos Block
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Electrical capacitor

Contents

• Electrical capacitor
  • Palette
  • Description
  • Dialog box
  • Default properties
  • Interfacing function
  • Modelica model

Palette

• Electrical.cosf - Electrical toolbox

Description

A capacitor is an electrical component that can store energy in electrical circuits. The relationship between the voltage V across a capacitor with capacitance C and the current I passing through it is given by the:

$$I = C\frac{dV}{dt}$$

Capacitors can also be used to differentiate between high-frequency and low-frequency signals and this makes them useful in electronic filters. A capacitor has a high impedance when a signal is low frequency signals.

Dialog box

• C (F)
  Capacitance
  Properties : Type 'vec' of size 1.

• Initial Voltage
  Initial Voltage
  Properties : Type 'vec' of size 1.

Default properties

• Inputs :
  • Modelica variable name : 'p'
    Implicit variable.

• Outputs :
  • Modelica variable name : 'n'
    Implicit variable.

• Parameters :
  • Modelica parameter name : 'C'
    Default value : 0.01
    Is a state variable : no.

  • Modelica parameter name : 'v'
    Default value : 0
    Is a state variable : yes.

• File name of the model : Capacitor

Interfacing function

• SCI/macros/scicos_blocks/ModElectrical/Capacitor.sci [view code]

Modelica model

• SCI/macros/scicos_blocks/ModElectrical/Electrical.mo [view code]