Programming instructions

Basic Components

Multisim Component Reference Guide 2-36 ni.com

Characteristic Equation and Model

This component’s inductance, L, is computed based on the initial settings according to the

equation:

The variable inductor is simulated as an open circuit with a current across the inductor forced

to zero by a large impedance value.

2.15 Potentiometer

The potentiometer acts much like a regular resistor, 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 potentiometer:

1. Double-click on the potentiometer and select the Val u e tab.

2. Enter the desired maximum resistance for the device in the Resistance (R) field.

3. Enter the Key that will change the potentiometer’s value when pressed.

4. Enter the percentage by which you want the potentiometer to change in the Increment

field.

5. Optionally, enter Component Type and Hyperlink information.

6. 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 resistors and potentiometers, and information on how to

edit footprints, refer to the Multisim User Guide or the Multisim helpfile.

 To increase the potentiometer’s value using the keyboard, press the identified key. The

potentiometer’s setting will increase in steps the size of the value entered in the

Increment

field. For example, if the device is a 200k linear potentiometer, and the

Increment is set to 5%,

Setting

100

* Inductance

ComponentRef.book Page 36 Thursday, December 7, 2006 10:12 AM