Electrical Engineering › Section J · Series, parallel, and series-parallel ac circuits › Topic J.4
Frequency response of the parallel R-L network
Put an inductor in parallel with a resistor and sweep the frequency: at the bottom of the range the inductor shorts everything out, and at the top it all but disappears. Tracing that change shows how parallel networks respond to frequency, and it rounds off the study of parallel ac circuits.
In this topic
- A network that changes with frequency
- The two extremes
- The impedance formula
- The crossover frequency
- Worked example: sweeping a current-driven network
- Branch currents against frequency
- Worked example: a voltage-driven network
- The parallel R-C network by analogy
- Summary: parallel ac networks
- Common mistakes to avoid
- Key takeaways
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