Introduction to resonance
Resonance, the physical harmonic vibration, the acceleration of an object is proportional to the displacement in the direction away from the equilibrium position, and is always the vibration under the action of the restoring force directed to the equilibrium position. The dynamic equation of resonance is F=-kx. The phenomenon of resonance is the increase of current and the decrease of voltage. The closer to the resonance center, the faster the change of the ammeter of the ammeter is, but the difference from the short circuit is that there is no zero sequence. In physics, there is a concept called resonance: when the frequency of the driving force is equal to the natural frequency of the system, the amplitude of the forced vibration of the system is the largest. This phenomenon is called resonance. The resonance in the circuit actually means this: when the frequency of excitation in the circuit is equal to the natural frequency of the circuit, the amplitude of the electromagnetic oscillation of the circuit will also reach a peak. In fact, resonance and resonance express the same phenomenon. This phenomenon of the same essence has different names in different fields.