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A series resonant circuit is one in which the inductive and capacitive reactance are equal in magnitude. Since the signs of the vectors of their reactance are opposite, they cancel and so leave only the resistance of the series circuit at the resonant frequency. Because reactance of a capacitor is inversely related to frequency, and the reactance of an inductor is directly related to frequency, this happens at a particular frequency dependent on the values of capacitance and inductance.
You see, when you apply a sine wave to an inductor, the current lags behind the voltage by 90 degrees. Or you may look at it as the voltage leading the current by 90 degrees.
But when a sine wave is applied to a capacitor, the reverse is true. Current leads voltage by 90 degrees. Or voltage lags behind current by 90 degrees.
Put a capacitor and inductor in series and input a sine wave of current at the frequency at which both have the same amount of reactance. Current is equal in magnitude and phase everywhere in a series circuit. Voltage dropped across the inductor is 90 degrees ahead of the current, while voltage dropped across the capacitor is 90 degrees behind the current. This puts the voltage drops 180 degrees out of phase with each other. Because the applied frequency is the one at which the reactance of each component is equal in magnitude, the voltage drops are also equal in magnitude so they sum to zero volts.
Zero volts at any current is zero ohms (Ohm's law, R = E/I). In the real world, both parts have resistance or a series resistor may be part of the design. But the end result is that impedance of the series circuit is lowest at the resonant frequency.
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What happens in a circuit at resonant frequency?
what is resonant frequency
Does resonant frequency of RLC series circuit depends on Resistance?
No, the resonant frequency of a RLC series circuit is only dependant on L and C. R will be the impedance of the circuit at resonance.
Why does a series resonant circuit cannot be tank circuit?
A series resonant circuit has it's reactive components connected in series with each other; while the reactive components, as in a "tank" circuit, are connected in parallel with each other. The resonant series circuit has the capability of producing usable increased voltage levels across each component at resonance, while the resonant tank circuit does not. The resonant parallel, or "tank" circuit; has the dual capability of creating a situation whereby the input amperage level is reduced to minimum while, at the same time, a maximum amount of circulating amperage is created between the two reactive tank components at resonance.
What happen if coil and capacitor are connected in series?
series resonant circuit
What are the applications of single tuned coupled circuits?
The resonance effect of the LC circuit has many important applications in signal processing and communications systems.The most common application of tank circuits is tuning radio transmitters and receivers. For example, when we tune a radio to a particular station, the LC circuits are set at resonance for that particular carrier frequency.A series resonant circuit provides voltage magnification.A parallel resonant circuit provides current magnification.A parallel resonant circuit can be used as load impedance in output circuits of RF amplifiers. Due to high impedance, the gain of amplifier is maximum at resonant frequency.Both parallel and series resonant circuits are used in induction heating.LC circuits behave as electronic resonators, which are a key component in many applications:AmplifiersOscillatorsFiltersTuners
Can a series resonant circuit oscillate as a parallel resonant circuit does?
yes
What happens in a circuit at resonant frequency?
what is resonant frequency
At a frequency below the resonant frequency parallel circuit is?
A parallel resonant circuit has low impedance, when non resonant; however the impedance rises sharply, as the circuit comes to resonance.
What is the use of series and parallel resonance?
Series resonant circuits have their lowest impedance at the resonant frequency. Parallel resonant circuits have their highest impedance at the resonant frequency. This characteristic is exploited in the design of filters, oscillators and other circuits.
Why a parallel resonant circuit is called as rejecter circuit?
As a parallel resonance circuit only functions on resonant frequency, this type of circuit is also known as an Rejecter Circuit because at resonance, the impedance of the circuit is at its maximum thereby suppressing or rejecting the current whose frequency is equal to its resonant frequency.
How do you decrease resonant frequency of a series-tuned circuit?
To decrease the resonant frequency of any tuned circuit, increase the inductance and/or increase the capacitance.
Does resonant frequency of RLC series circuit depends on Resistance?
No, the resonant frequency of a RLC series circuit is only dependant on L and C. R will be the impedance of the circuit at resonance.
Why does the resistance in a series resonant circuit have no bearing on the resonant frequency?
Series resonance occurs when a circuit's inductive reactance is equal to its capacitive reactance. The resistance of the circuit is irrelevant.WebRep currentVote noRating noWeight
What do you mean by resonant in power electronics?
Resonant in electronics circuit refer to tuning if the resonant condition arise it means the frequency where does the resonant arise is resonant frequency and the gain is highest on that particular frequency. it is widely used in receiver circuits.
Why does a series resonant circuit cannot be tank circuit?
A series resonant circuit has it's reactive components connected in series with each other; while the reactive components, as in a "tank" circuit, are connected in parallel with each other. The resonant series circuit has the capability of producing usable increased voltage levels across each component at resonance, while the resonant tank circuit does not. The resonant parallel, or "tank" circuit; has the dual capability of creating a situation whereby the input amperage level is reduced to minimum while, at the same time, a maximum amount of circulating amperage is created between the two reactive tank components at resonance.
What happen if coil and capacitor are connected in series?
series resonant circuit
What do you understand by bandwidth of a parallel resonant circuits?
The bandwidth of a resonant circuit is defined as the distance between the two -3dB rolloff points in the response curve.
