Programming instructions

Basic Components
Multisim Component Reference Guide 2-4 ni.com
2.2.3 Rated Capacitors
A capacitor stores electrical energy in the form of an electrostatic field. Capacitors are widely
used to filter or remove AC signals from a variety of circuits. In a DC circuit, they can be used
to block the flow of direct current while allowing AC signals to pass.
A capacitor’s capacity to store energy is called its capacitance,
C, which is measured in
farads.
The variable capacitor is simulated as an open circuit with a current across the capacitor
forced to zero by a large impedance value.
The polarized capacitor must be connected with the right polarity. Otherwise, an error
message will appear.
Note Refer to the Component Reference Guide for a more detailed discussion of capacitors.
 To adjust the component’s tolerances:
1. Double-click on the placed component and click the Value tab.
2. Change the following values as desired:
•
Animation Delay Factor — increase this number to slow the speed of animation of the
symbol blowing. This is not a real-time value.
•
Capacitance — set the capacitance as desired.
•
Voltage Rating (Pk) — the maximum peak voltage across the capacitor allowed. If this
value is exceeded during simulation, the capacitor blows.
•
Initial Conditions — the initial charge across the capacitor, before simulation begins.
3. Click OK.
2.2.4 Rated Diodes
Diodes allow current to flow in only one direction and can therefore be used as simple
solid-state switches in AC circuits, being either open (not conducting) or closed (conducting).
Terminal A is called the anode and terminal K is called the cathode.
Note Refer to the Component Reference Guide for a more detailed discussion of diodes.
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