Programming instructions

Variable Inductor
 National Instruments Corporation 2-35 Multisim Component Reference Guide
2.14 Variable Inductor
The variable inductor acts much like a regular inductor, except that you can adjust its value
using the keyboard or by hovering the cursor over the device and moving the slider bar that
appears.
 To set up the variable inductor:
1. Double-click on the variable inductor and select the Val u e tab.
2. Enter the desired maximum inductance for the device in the Inductance field.
3. Enter the Key that will change the variable inducotor’s value when pressed.
4. Enter the percentage by which you want the variable inductor to change in the Increment
field.
5. Enter the desired Coil Resistance.
6. Optionally, enter Component Type and Hyperlink information.
7. Optionally, change the Layout Settings as described below:
•
Edit Footprint button — click to display the Edit Footprint dialog box where you can
select a new
Footprint and Manufacturer.
Note For information on placing inductors and variable inductors, and information on how
to edit footprints, refer to the Multisim User Guide or the Multisim helpfile.
 To increase the variable inductor’s value using the keyboard, press the identified key. The
variable inductor’s setting will increase in steps the size of the value entered in the
Increment
field. For example, if the device is a 200 uH variable capacitor, and the
Increment is set to 5%,
its inductance will increase by 10 uH steps until it reaches its maximum value of 200 uH.
 To decrease the value using the keyboard, press and hold SHIFT and press the identified key.
For example, say the variable inductor is set to 45%, the increment is 5% and the key is H.
Press H , and the setting increases to 50%. Press H again, and it increases to 55%. Press S
HIFT
and H, and the setting decreases to 50%.
 To adjust the variable inductor’s value using the mouse:
1. Hover the cursor over the device to display its slider bar.
2. Drag the slider to the right to increase the value, or to the left to decrease the value.
ComponentRef.book Page 35 Thursday, December 7, 2006 10:12 AM