Electrical Engineering › Section L · Power (ac) and resonance › Topic L.5
Series resonance and the quality factor
At one particular frequency an inductor and a capacitor in series cancel each other completely, the circuit looks like a plain resistor, and the current peaks. That is resonance, the principle behind every tuned circuit from a radio's front end to a filter that picks out a single tone.
In this topic
- What resonance means
- The series resonant circuit
- The resonant frequency
- Conditions at resonance
- Worked example: finding the resonant conditions
- The quality factor
- Voltage magnification
- The quality factor of a coil
- Worked example: a radio tuning circuit
- Common mistakes to avoid
- Key takeaways
This topic is part of Wuanberri Pro. Checking your access…