Programming instructions

Rated Virtual Components
 National Instruments Corporation 2-3 Multisim Component Reference Guide
2.2.2 Rated BJTs
A bipolar junction transistor, or BJT, is a current-based valve used for controlling electronic
current. BJTs are operated in three different modes, depending on which element is common
to input and output: common base, common emitter or common collector. The three modes
have different input and output impedances and different current gains, offering individual
advantages to a designer.
Note Refer to the Component Reference Guide for a more detailed discussion of BJTs.
 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.
•
Maximum Collector-Emitter Voltage — the maximum collector-emitter voltage
allowed. If this value is exceeded during simulation, the BJT blows.
•
Maximum Collector-Base Voltage — the maximum collector-base voltage allowed. If
this value is exceeded during simulation, the BJT blows.
•
Maximum Emitter-Base Voltage — the maximum emitter-base voltage allowed. If this
value is exceeded during simulation, the BJT blows.
•
Maximum Collector Current — the maximum collector current allowed. If this value is
exceeded during simulation, the BJT blows.
•
Saturation Current — the maximum saturation current allowed. If this value is
exceeded during simulation, the BJT blows.
•
Maximum Forward Beta — the maximum forward beta allowed. If this value is
exceeded during simulation, the BJT blows.
3. Click OK.
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