Programming instructions

Bipolar Sources
 National Instruments Corporation 1-51 Multisim Component Reference Guide
The example below is an ABM voltage source whose expression references current through
three different types of voltage source components.
Note Positive current polarity is taken from the positive node to the negative node of the
voltage source.
Multisim supports a rich set of operators and functions which can be used in expressions. For
details, refer to “Analog Behavioral Modeling and Controlled Source Syntax” in your
Multisim User Guide or helpfile.
1.46 Bipolar Sources
The bipolar current and voltage sources provide a pulsed current or voltage output.
 To change the output of a bipolar source:
1. Double-click on the source to open its properties dialog box and click the Val ue tab.
2. Change the following as desired:
•
Positive Pulse <Current or Volt a g e > — depending on the source type, this is either the
value of the positive current or negative voltage pulse
•
Negative Pulse <Current or Volt a ge> — depending on the source type, this is either the
value of the negative current or negative voltage pulse
•<
Current or Vol t a g e > Offset — depending on the source type, this is either the value of
the current or the voltage offset
•
Duty Cycle/Pulse Duration Time — enter either value and the other changes
automatically
•
Frequency(F)/Period — enter either value and the other changes automatically
•Rise Time
• Fall Time
•
Dead Time/Dead Time Rate — enter either value and the other changes automatically
• Effective Duty Cyle — read-only value that changes as you edit
Duty Cycle/Pulse
Duration Time
or Dead Time/Dead Time Rate.
3. Click OK to accept the changes and close the dialog.
Referenced current
<source_type>
ComponentRef.book Page 51 Thursday, December 7, 2006 10:12 AM