The two-element LC circuit described above is the simplest type of inductor-capacitor network (or LC network). For a circuit model incorporating resistance, see RLC circuit.

While no practical circuit is without losses, it is nonetheless instructive to study this ideal form of the circuit to gain understanding and physical intuition. The purpose of an LC circuit is usually to oscillate with minimal damping, so the resistance is made as low as possible. Any practical implementation of an LC circuit will always include loss resulting from small but non-zero resistance within the components and connecting wires. They are key components in many electronic devices, particularly radio equipment, used in circuits such as oscillators, filters, tuners and frequency mixers.Īn LC circuit is an idealized model since it assumes there is no dissipation of energy due to resistance. LC circuits are used either for generating signals at a particular frequency, or picking out a signal at a particular frequency from a more complex signal this function is called a bandpass filter. The circuit can act as an electrical resonator, an electrical analogue of a tuning fork, storing energy oscillating at the circuit's resonant frequency. LC circuit (left) consisting of ferrite coil and capacitor used as a tuned circuit in the receiver for a radio clockĪn LC circuit, also called a resonant circuit, tank circuit, or tuned circuit, is an electric circuit consisting of an inductor, represented by the letter L, and a capacitor, represented by the letter C, connected together.

Rangkaian low pass filter lrc