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Analog Electronics with LabVIEW®
book

Analog Electronics with LabVIEW®

by Kenneth L. Ashley
October 2002
Intermediate to advanced content levelIntermediate to advanced
432 pages
9h 20m
English
Pearson
Content preview from Analog Electronics with LabVIEW®

B.8. SPICE BJT βDC as a Function of Collector Current

SPICE calculates a dc beta, βDC, when ISE and NE are included in the transistor model. The equation for the calculation uses βDC = IC/IB, where IB (forward-active mode) includes the ideal and leakage terms, (B.12),

and IC is the collector current for the forward-active mode, (B.7),

Using (B.7) and (B.12) in the definition of βDC, we obtain

Equation B.36

which is

Equation B.37

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