ELEC1310 Lecture Notes - Lecture 6: Current Source, Voltage Source, Short Circuit
9 Oct 2018
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Document Summary
R > 0 gives a simplistic linear model of a non-ideal behaviour. R < inf gives a simplistic linear model of a non-linear behaviour. The derivative of the v-i slope gives the value for the internal resistor. Ideal sources are dotted lines: horizontal for ideal current, vertical for ideal voltage, the black line is a non-ideal source, as current increases, voltage reduces. Both equations are equal if v = Two non-ideal sources are externally equivalent if the following equation is satisfied. If externally equivalent, they are unable to be distinguished from the outside. Any real linear two-terminal network is externally equivalent to a non-ideal voltage source: circuits simplify down to a voltage source and a resistor. Any network can be simplified down into an easier circuit using source transformations. Thevenin voltage can be found as the open circuit voltage. Thevenin resistance can be found in two ways: find the short-circuit current, find the equivalent resistance with the independent sources zeroed.
