SIMPLORER User Manual V6.0 - FER-a

Component Outputs
Bipolar Junction Transistor
SIMPLORER 6.0 — Manual 113
Description [Unit] Parameter Name Data Type
Voltage [V] V real
Current [A] I real
Conductivity [S] G real
Derivative of Voltage [V/s] dV real
Derivative of Current [A/s] dI real
Component Nodes
Description Node Name Nature
Drain D electrical
Source S electrical
>>Basics>Circuit>Semiconductors System Level
The System level BJT is used to simulate a static voltage-current-relation. Each voltage cause
a corresponding current depending on the selected characteristic and the applied control signal.
The BJT types of predefined characteristics defined within the component dialog guarantee
a high calculation speed. In contrast to the predefined characteristic types (equivalent line,
exponential function) you can use each other separate characteristic from the Tools folder or
an appropriate quantity of a component. Usually an Equivalent line, Exponential function,
Hyperbolic function, Polynom or the XY Lookup Table should be used. Characteristics based
on XY-Data pairs allow simple access to measured curves for the switching behavior of the
components.
To control the BJT, a logical signal is applied. This signal can originate from any SIMPLORER
system variable.
Control Signal (Base current) Component State
> 0 ON
≤ 0 OFF
vt () =
fit ( () , [ control signal]
)
Dialog Settings
� «Characteristic Type»
The BJT type with predefined characteristics is selected. In the list, select a characteristic.
� «Type»
In the list, select the equivalent line, exponential function, or XY Data Pairs and define the
corresponding characteristic parameters. These are Common parameter types. Enter a numerical
value, a variable, or an expression in the text box.