Electrical Engineering › Section J · Series, parallel, and series-parallel ac circuits › Topic J.5
Equivalent circuits and phase measurement
Any impedance can be pictured as a resistance and a reactance in series, or as a different pair in parallel, and at one frequency the two pictures are indistinguishable from outside. This topic shows how to switch between them, how to measure phase angles on an oscilloscope, and where these ideas meet real hardware.
In this topic
- Two circuits, one impedance
- Series to parallel
- Worked example: series to parallel
- Parallel to series
- Worked example: parallel to series
- Equivalent at one frequency only
- Worked example: reading a phase shift
- Grounds and sensing resistors
- Applications: a real coil and home wiring
- Common mistakes to avoid
- Key takeaways
This topic is part of Wuanberri Pro. Checking your access…