A Singular Point in the Characteristics of the Serial RLC Circuit

It is shown that the frequency characteristics of the RCL serial circuit have a special point at which the modulus of the complex resistance is not dependent on resistance. Is investigated the existence region of the real model of the serial circuit. A comparison of different schemes of resonant circuit is provided. Is reviewed previously unknown properties of the classical model of the resonant circuit. Apart from the fact that knowledge is never too much, can be developed new methods of measuring the parameters of electrical circuits, based on open source phenomena. It is also possible that an outdoor phenomenon has a physical explanation. Is a diagram of the mechanical model with similar properties.