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Converting from admittance to impedance

المؤلف:  Stan Gibilisco

المصدر:  Teach Yourself Electricity and Electronics

الجزء والصفحة:  294

2-5-2021

2601

Converting from admittance to impedance

The GB plane is, as you have seen, similar in appearance to the RX plane, although mathematically the two are worlds apart. Once you’ve found a complex admittance for a parallel RLC circuit, how do you transform this back to a complex impedance? Generally, it is the impedance, not the admittance, that technicians and engineers work with.
The transformation from complex admittance, or a vector G+jB, to a complex impedance, or a vector R + jX, requires the use of the following formulas:

If you know the complex admittance, first find the resistance and reactance components individually. Then assemble them into the impedance vector, R + jX.