Parallel Resonance Circuit
Both are 3-element networks that contain two reactive components making them a second-order circuit, both are influenced by variations in the supply frequency and both have a frequency point where their two reactive components cancel each other out influencing the characteristics of the circuit. Both circuits have a resonant frequency point. The difference this time however, is that a parallel resonance circuit is influenced by the currents flowing through each parallel branch within the parallel LC tank circuit. A tank circuit is a parallel combination of L and C that is used in filter networks to either select or reject AC frequencies. Consider the parallel RLC circuit below. Parallel RLC Circuit Let us define what we already know about parallel RLC circuits. A parallel circuit containing a resistance, R , an inductance, L and a capacitance, C will produce a parallel resonance (also called anti-resonance) cir...