SIMPLORER User Manual V6.0 - FER-a

4
5
94 Modeling with Circuit Components
To define characteristic data you can do one of the following:
• «Use Pin»; the XY component, connected to the pin, provides the characteristic.
Within the Characteristic dialog:
• «Reference»; the name in the text box specifies an XY element placed on the sheet.
• «Lookup Table»
a. «File Reference»; the name in the text box specifies a variable which refers to a subsheet
port specifying a characteristic file.
b. «Lookup Table»; data pairs, defined in the table, are used for characteristic.
• � «File Name»; if you use an file, data pairs are displayed in the lookup table and used
for characteristic. You can modify the data when necessary.
In SIMPLORER only voltage sources or ammeters are allowed as controlling components for
current controlled elements. These must be inserted properly in the controlling branch.
Component Parameters
Description [Unit] Parameter Name Data Type
Control Quantity [V/A] QUANT real
Characteristic CH real
Component Outputs
Description [Unit] Parameter Name Data Type
Voltage [V] V real
Current [A] I real
Derivative of Voltage [V/s] dV real
Derivative of Current [A/s] dI real
Component Nodes
Description Node Name Nature
Pin 1 (with red point) N1 electrical
Pin 2 N2 electrical
Collector Current Source
vce() t – VEA
it () =
vbe() t ⋅ ln--------------------------------
VCE – VEA
The nonlinear collector current allows the static modeling of transistors (Early effect). The collector
current depends via a nonlinear relation on both its own branch voltage (v ce (t)) as well
as the voltage of the controlling branch (v be (t)).
Component Parameters
Description [Unit] Parameter Name Data Type
Early Voltage [V] VEA real
Collector-emitter reference potential [V] VCE real
Control Quantity [V] QUANT real