• The applied load will normally
have an important impact on region of operation of
device.
• If analysis is done in
graphical approach, a line can be drawn on the characteristics of
the device that represents
applied load.
• The intersection of load line
with the characteristics will determine the point of
operation.
• Such an analysis is called as
load-line analysis.
• The intersection point is
called ‘Q’ point or operating point.
• Its very simple as compared to
the non-linear analysis of diode which involves heavy
maths……
Both KVL and KCL must be
satisfied at all times
i-v curves plotted for diode (energised
by Vss)
i-v curves plotted for resistor
We can combine
these curves on one plot to do a load line analysis
Load
line analysis
Example on load line analysis
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