English
Noun
immittance- either the impedance or the admittance of an alternating current considered as alternatives
User Contributed Dictionary
Extensive Definition
Immittance in electrical terminology is a concept
combining Impedance
and Admittance of a
circuit.
It is sometimes convenient to use the term
immittance when referring to a complex
number which may be either the impedance (ratio of voltage to current)
or the admittance (ratio of current to voltage) of an electrical
circuit.
Immittance does not have units since it applies
to both impedance and admittance, which have different units.
However, in certain theoretical work it may be necessary to deal
with general functions, which afterward will be specialised to
become either an impedance or an admittance by the assignment of
suitable units; in such cases it is convenient to refer to the
functions as immittances.
The "immittance" Smith chart simply has both the
impedance and admittance grids on the same chart, which is useful
for cascading series-connected with parallel-connected circuits.
However, with so many lines, it can become difficult to read.
References
immittance in Chinese: 導抗