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Parallel resonance or near-to-resonance circuits can be used to prevent the waste of electrical energy, which would otherwise occur while the inductor built its field or the capacitor charged and discharged. As an example, asynchronous motors waste inductive current while synchronous ones waste capacitive current.
If the frequency of the applied current is the circuit's natural resonant frequency (natural frequency below), resonance will occur, and a small driving current can excite large amplitude oscillating voltages and currents. In typical tuned circuits in electronic equipment the oscillations are very fast, from thousands to billions of times per ...
Resonance is a phenomenon that occurs when an object or system is ... The capacitor's voltage grows slowly by integrating the current over time and is therefore more ...
The graph opposite shows that there is a minimum in the frequency response of the current at the resonance frequency = / when the circuit is driven by a constant voltage. On the other hand, if driven by a constant current, there would be a maximum in the voltage which would follow the same curve as the current in the series circuit.
An LC circuit can be quantized using the same methods as for the quantum harmonic oscillator.An LC circuit is a variety of resonant circuit, and consists of an inductor, represented by the letter L, and a capacitor, represented by the letter C.
The current to the primary from the switching transistors excites resonance in the secondary tuned circuit. Single tuned SSTCs are simpler, but the single resonant circuit usually has a lower Q factor and so stores less energy and produces lower voltages than double resonant circuits, other things being equal.
The WiTricity type magnetic resonance is characterized in that the resonant coils on the primary side and the resonant coils on the secondary side are paired. The primary resonant coil increases the primary driving coil current and increases the generated magnetic flux around the primary resonator.
Alternating current will move the cone back and forth. Resonance ... This frequency is known as the "free-space resonance" of the loudspeaker and is designated by F s.