BASIC ELECTRONICS - OD1633 - LESSON 1/TASK 2
FIGURE 11.
SCHEMATIC SYMBOLS.
lamp (DS1), and back to the positive terminal of the battery.
With the
switch closed, the path for the current is complete. Current will continue
to flow until the switch (S1) is moved to the open position, or until the
battery is completely discharged.
c. Graphical Analysis of the Basic Circuit. One of the most valuable
methods of analyzing a circuit is by constructing a graph. No other method
provides a more convenient or rapid way to observe the characteristics of an
electrical device.
The first step in constructing a graph is to obtain a table of data. The
information in the table can be obtained by taking measurements on the
circuit under examination, or can be obtained theoretically through a series
of Ohm's law computations. The latter method is used here.
Since there are three variables (E, I, and R) to be analyzed, there are
three distinct graphs that may be constructed.
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