Bilateral elements
The impedance offered by the bilateral elements is same for either
direction of the current flow. The volt-ampere (V-I) characteristics of
bilateral elements are symmetrical on I and III quadrants or on II and IV
quadrants. The typical V-I characteristics of bilateral elements
can as shown in the figure.
can as shown in the figure.
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| V-I characteristics of bilateral elements |
Examples:
Resistors, Inductors and capacitors
Unilateral elements
The impedance offered by the unilateral elements differs for currents
flowing in either direction. They offer high impedance when current in one
direction and low impedance when the current direction reverses. The V-I
characteristics of unilateral elements are unsymmetrical on I and III or II and
IV quadrants as can be observed from the figure.
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| Typical characteristics of unilateral elements |
Example:
Diodes
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